MAJLIS SUKAN NEGARA MALAYSIA
Transcription
MAJLIS SUKAN NEGARA MALAYSIA
MAJLIS SUKAN NEGARA MALAYSIA CAWANGAN KEJURULATIHAN UNIT SPKK UNIT SKIM PERSIJILAN KEJURULATIHAN KEBANGSAAN SPORT SCIENCE NOTES LEVEL III 1 EDISI 2012 UNIT PENDIDIKAN SAINS KEJURULATIHAN CAWANGAN KEJURULATIHAN MAJLIS SUKAN NEGARA MALAYSIA ISI KANDUNGAN BIL MUKA SURAT 1) MAKLUMAT AM KURSUS SAINS SUKAN TAHAP III 2 2) UNIT 1 FALSAFAH SUKAN 12 3) UNIT 2 SUKAN DI MALAYSIA 22 4) UNIT 3 ANATOMI DAN FISIOLOGI SUKAN 34 5) UNIT 4 ASAS BIOMEKANIK 72 6) UNIT 5 LATIHAN DAN PERSEDIAAN FIZIKAL 90 7) UNIT 6 PEMAKANAN SUKAN 132 8) UNIT 7 KOMPETENSI KEJURULATIHAN 185 9) UNIT 8 PSIKOLOGI SUKAN 210 10) UNIT 9 TINGKA LAKU MOTOR 254 11) UNIT 10 KECEDERAAN DAN PERUBATAN SUKAN 261 2 SKIM PERSIJILAN KEJURULATIHAN KEBANGSAAN (SPKK) MAKLUMAT AM KURSUS SAINS SUKAN TAHAP III 1. PENGENALAN Kursus Sains Sukan merupakan salah satu komponen di bawah Skim Persijilan Kejurulatihan Kebangsaan (SPKK). SPKK adalah satu program pembangunan kejurulatihan yang seragam dan berterusan dan antara lain ialah untuk meningkatkan pengetahuan jurulatih dalam ilmu kejurulatihan khususnya aspek sains sukan ke arah memajukan lagi prestasi atlet demi kecemerlangan sukan untuk negara. 2. PENDAFTARAN DAN PEMBAYARAN KURSUS TAHAP III Setiap peserta yang telah mendaftar bagi kursus dikehendaki membayar yuran sebanyak RM 250.00 ( peserta baru ) dan RM 50.00 ( mengulang). Sekiranya peserta tidak menjelaskan yuran maka tidak boleh menduduki peperiksaan. 3. KANDUNGAN KURSUS Kursus Sains Sukan Tahap III meliputi masa selama 42 jam serta mengandungi topik - topik seperti berikut ;- BIL TOPIK 3 JAM 1 Falsafah Sukan 2 2 Sukan Di Malaysia 1 3 Kompetensi Sukan 4 4 Anatomi & Fisiologi 6 5 Latihan dan Persediaan Fizikal 9 6 Psikologi Sukan 4 7 Tingka Laku Motor 3 8 Biomekanik 4 9 Perubatan Sukan 3 10 Pemakanan Sukan 3 11 SEMINAR 3 Jumlah 42 4. PERLAKSANAAN KURSUS a. Kelas akan berjalan selama tujuh (7 ) hari. b. Sesi persediaan seminar akan diberikan selama 5 hari. Setiap kumpulan yang telah diagihkan bebas untuk menjalankan perbincangan. c. Sesi seminar dan peperiksaan melibatkan 1 hari menjadikan jumlah keseluruhan 7 hari d. Tenaga pengajar adalah terdiri daripada instruktur yang dilantik oleh Lembaga Kejurulatihan Kebangsaan. e. Sebab perkara-perkara yang tidak dapat dielakkan sekiranya ada perubahan Jadual dan Instruktur maka akan diberitahu kepada peserta. 5. PENILAIAN 5.1 UJIAN OBJEKTIF ( 50%) Di akhir kursus satu ujian objektif akan dijalankan. Ujian ini mengandungi 50 soalan objektif dan masa ujian ialah 11/4 jam. 5.2 SEMINAR ( 10 %) 5.2.1 Semua peserta diwajibkan mengambil bahagian dalam satu seminar yang akan diadakan pada akhir kursus dan topik yang akan disediakan dan perbincangkan ialah seperti berikut :a. b. c. d. Persediaan Fizikal (Suaian Fizikal untuk sukan) Psikologi Biomekanik – Persediaan atau Pembetulan Teknik Sukan (Kemahiran ) Perubatan Sukan 4 e. f. 5.2.2 Periodisasi Nutrion Tujuan Seminar ialah untuk melihat :a. b. c. d. e. f. Kerjasama dalam kumpulan Perancangan strategi Pengurusan masa Kemampuan melakukan penyelidikan Kemampuan menyediakan kertas kerja Kemampuan dan keyakinan jurulatih berhadapan audien 5.2.3 Peserta akan dibahagikan kepada 6 kumpulan (6 orang setiap kumpulan) dan akan bekerjasama menyediakan kertas kerja untuk seminar serta perbentangan. 5.2.4 Persediaan Kumpulan adalah seperti berikut: a) Persediaan Persembahan dalam Power Point b) Edaran Kertas Kerja bagi semua peserta. c) Kertas Kerja dalam Words bukan power Point. d) Kertas Kerja untuk Panel. e) Topik yang dipilih adalah yang boleh disembahkan dalam masa yang diberi. Contoh Tajuk bagi Periodisasi ialah Persediaan atlet dalam Fasa Pertandingan dalam aspek Kekuatan sahaja. f) Setiap ahli Kumpulan harus mengambil bahangian dalam persembahan. 5.2.5 Setiap kumpulan akan membentangkan kertas masing-masing selama 20 minit dan 5 minit lagi untuk sesi soal jawab.Setiap peserta dalam kumpulan dapat membentangkan sekurangkurangnya 3 minit. 5.2.6 Penilaian pembentangan akan dibuat oleh panel yang dilantik oleh Cawangan Kejurulatihan MSN. 5.2.7 Aspek-aspek yang akan dinilai adalah seperti berikut :- PEMARKAHAN SEMINAR BIL 1 2 3 4 5 6 7 NAMA PESERTA SUKAN 5 NO.K.P FORMAT KERTAS KERJA (Markah Kumpulan) FORMAT KESELURUHAN SUSUNAN MAKLUMAT BAHASA PENYUNTINGAN (20%) 5% 5% 5% 5% PEMBENTANGAN LISAN (Markah Individu) (80%) KANDUNGAN (40%) KETEPATAN FAKTA 10% KESESUAIAN `ADEQUANCY´ / MEMENUHI KEPERLUAN SUSUNAN MAKLUMAT 10% PENYAMPAIAN 10% 10% (20%) SUARA 5% KEYAKINAN 5% GAYA 5% MULTIMEDIA 5% RESPON TERHADAP SOALAN GAYA INTERAKSI KEUPAYAAN WACANA KEUPAYAAN MEMAHAMI SOALAN KETEPATAN JAWAPAN 2 1 (20%) 5% 5% 5% 5% 6 3 PESERTA 4 5 6 7 JUMLAH KESELURUHAN (100%) JUMLAH KESELURUHAN PERATUSAN MARKAH (10%) / 100 5.2.8 Kertas Kerja hendaklah bertaip Double – Spacing dan sekurangkurangnya satu salinan hendaklah diserahkan kepada panel sebelum pembentangan. 5.3 PROJEK ASPEK PRAKTIKAL KAJIAN (30%) 5.3.1 Setiap peserta akan diwajibkan menyediakan satu projek / kajian padang bertaip berdasarkan salah satu dari aspek berikut ;a. b. c. d. e. f. Pemakanan Latihan Fizikal Perubatan sukan Ujian padang – parameter fisiologi Psikologi Biomekanik – Persediaan atau Pembetulan Teknik Sukan Kemahiran. 5.3.2 Cara pemilihan tajuk / aspek akan ditentukan oleh peserta sendiri berdasarkan satu-satu tajuk/aspek Praktikal Kajian Sukan masingmasing, contohnya, Tajuk yang dipilih:Tajuk: Sukan Hoki: Peningkatan Latihan Anerobik semasa Musim Pertandingan. Perbincangan: Masaalah yang dihadapi oleh pemain sendiri dalam pasukan. Posisi. Boleh beri Data. Cara Mengatasi masaalah. Jenis Latihan. Kajian berkaitan Bukti. Cadangan untuk mengaplikasikan bagi pasukan sendiri.. Projek boleh dibuat dalam format Thesis. Tetapi lebih kepada Kualitatif daripada Kuantitatif. Format Thesis- Pendahuluan, Tujuan dan Objektif ,Makluman tentang tajuk,Skop Kajian,Batasan Kajian,Kajian-kajian Berkaitan,Perbincangan,Cadangan,Bibiligrafi. 5.3.3 Projek ini harus disampaikan kepada penyelaras semasa datang untuk VIVA. 3 bulan selepas kursus. 5.3.4 Format Susunan Buku Laporan Projek adalah seperti di lampiran. - Kertas Kerja hendaklah bertaip Double – Spacing , Fonts 12 dan Huruf ROMAN. - Tidak Kurang daripada Tiga Ribu (3,000) patah perkataan. 7 - 1 original dan 2 salinan OrIginal – Kulit Hard Cover warna maroon. 2 Salinan – Boleh fotostat dan Comb Binding. Naskah original akan disimpan oleh pihak Majlis Sukan Negara Malaysia. 5.3.5 Penilaian untuk kajian ini adalah berdasarkan aspek-aspek berikut :- BIL ASPEK PERATUS i Isi kandungan 10% ii Format dan Stail Penulisan 10% iii. Aspek praktikal Kajian 20% iv Kajian Berkaitan 30% iv Rumusan dan Cadangan 20% v Rujukan 10% Jumlah 100% 5.4 VIVA 5.4.1 Semua peserta akan dikehendaki menghadiri satu sesi Viva yang akan diadakan sekurang-kurangnya 3 bulan selepas kursus. 5.4.2 Peserta yang gagal menghadiri Viva setelah dipanggil akan diberikan tempoh satu tahun selepas kursus untuk mengikutinya atau Viva berikutnya diadakan selepas tempoh itu. 5.4.3 Mana-mana peserta yang gagal menghadiri Viva dalam tempoh yang diberikan akan dianggap gagal keseluruhan kursus. 8 5.4.4 BIL 1 PENILAIAN SESI VIVA MARKAH PENUH VIVA ADALAH 10 DAN MARKAH LULUS ADALAH 5 BAHAGIAN MARKAH PENGETAHUAN (SUKAN SPESIFIK) 1.2 UMUM (Pengenalan sebagai Jurulatih) 1 1.3 KHUSUS (Berkenaan Sukan) PENGETAHUAN SAINS SUKAN 2.1 ANATOMI & FISIOLOGI 2 5 2.2 BIOMEKANIK 2.3 PSIKOLOGI 2.4PERUBATAN SUKAN 2.5 LATIHAN FIZIKAL 3 SISTEM LATIHAN 3 4 PENGURUSAN SUKAN 1 JUMLAH MARKAH 10 9 MARKAH YANG DIPEROLEHI 6. KEPUTUSAN a. Keputusan hanya akan diumumkan kepada peserta yang telah selesai menjalani semua bentuk penilaian. b. Markah lulus untuk setiap komponen penilaian ialah KOMPONEN MARKAH MARKAH LULUS Ujian Objektif 50 25 Seminar 10 5 Projek 30 15 Viva 10 5 100 50 Jumlah c. Markah LULUS keseluruhan ialah 50% 1. Sijil boleh diambil dari pihak MSNM setelah diumumkan kepada peserta. 10 LAMPIRAN KURSUS SAINS SUKAN TAHAP III SKIM PERSIJILAN KEJURULATIHAN KEBANGSAAN (SPKK) FORMAT SUSUNAN BUKU LAPORAN PROJEK ASPEK PRAKTIKAL KAJIAN KULIT BELAKANG ( Hard Cover) Warna Maroon BIBLIOGRAFI ISI PROJEK LAPORAN PEMERIKSA (Ditaip seperti Format KANDUNGAN HELAIAN TAJUK KULIT HADAPAN ( Hard Cover) Warna Maroon 11 SUKAN OLAHRAGA PERSEDIAAN FIZIKAL KULIT HADAPAN (HARD COVER) WARNA MAROON DISEDIAKAN OLEH :ZAWAWI ZAKARIA KOD KURSUS 3(1)2012 KURSUS SAINS SUKAN TAHAP III SKIM PERSIJILAN KEJURULATIHAN KEBANGSAAN (SPKK) SUKAN OLAHRAGA PENINGKATAN LATIHAN KEKUATAN KAKI UNTUK ATLET LOMPAT JAUH HELAIAN TAJUK LAPORAN PEMERIKSA (DITAIP SEPERTI FORMAT YANG DILAMPIRKAN) PROJEK ASPEK PRAKTIKAL KAJIAN INI DISEDIAKAN BAGI MEMENUHI KEPERLUAN KURSUS SEBAGAI SALAH SATU ASPEK PENILAIAN 1 (Muka Surat) 2 ( Muka Surat) BIBLOGRAFI (Akhir) Muka Surat FORMAT INI DITAIP DALAM BUKU LAPORAN PROJEK 12 LAPORAN PEMERIKSA (LAPORAN INI DIISI OLEH PEMERIKSA / PENILAI) BIL ASPEK PENILAIAN 1 2 3 4 5 6 PERATUS ISI KANDUNGAN FORMAT DAN STAIL PENULISAN ASPEK PRAKTIKAL KAJIAN KAJIAN BERKAITAN RUMUSAN DAN CADANGAN RUJUKAN JUMLAH MARKAH 10 % 10 % 20 % 30% 20 % 10 % 100% KOMEN PEMERIKSA Markah (30%) ……………………………………… ( TANDATANGAN PENILAI) NAMA:……………………………………… TARIKH :………………………………. “ If someone feels that they had never made a mistake in their life, then it means they had never tried a new thing in their life.” KANDUNGAN TAHAP III UNIT 1 SPORTS PHILOSOPHY 13 Coaching ethics The Olympic spirit UNIT 2 SPORTS IN MALAYSIA Malaysia in the international sports arena Malaysia’s achievements Success in other world level competitions UNIT 3 ANATOMY AND SPORT PHYSIOLOGY Hormone and exercise. Thermoregulation Altitude Training Training for aerobic and anaerobic power UNIT 4 SPORT BIOMECHANIC Common technique analysis approach Qualitative video analysis of sports skill Capturing and editing procedure Compilation procedure UNIT 5 TRAINING AND FITNESS Application of per iodization in sports Speed training Agility and coordination Quickness Sport – specific requirerement for speed, agility, quickness (SAQ) programme Fundamental of functional strength training Power training for sports Plyometric training Physical fitness testing procedure UNIT 6 SPORT NUTRITION Planning your nutrition for training Nutrient requirement for athletes Nutrition tactics Nutritional issues and challenges 14 Assessment of nutritional status Food quality and safety UNIT 7 COACHING COMPETENCIES Risk management Developing top level athletes Planning an international sport competitions Presentations skills Decision making in sports UNIT 8 SPORT PSYCHOLOGY Team Building & Cohesion) Test & Measurement in Sport Psychology) Plan and Application of Mental Skills Program in training UNIT 9 MOTOR BEHAVIOR Augmented Feedback in Learning Kinematic Feedback and other Feedbacks Retention and Transfer of Learning Conditions of Practice Facilitating Learning and Performance UNIT 10 SPORTS MEDICINE Rehabilitation of sports injury Medical conditions in athletes Medical preparedness for competition and travel “ History stands witness to the fact that those who cut theirs country’s throat end up cutting their own “ “ Believing everybody is dangerous but believing nobody is more dangerous” UNIT 1 15 SPORTS PHILOSOPHY 16 17 Coaching ethics 1.1.1 Fair play What do we mean by 'fair play' and 'level playing field'? In ethics, the concept of fairness involves treating everyone equally and impartially. 'Fair play' is usually understood to mean using only tactics that are in accord with the spirit of the sport. A 'level playing field' is a situation in which competitors are required to follow the same rules and are given an equal ability to compete. This means that no matter what the rules are, as long as they are applied equally and impartially the playing field is still level. If drugs (or any currently-illegal tactics) were allowed, as long as everyone had equal access to them the sport would still be fair. If some sportsmen did not want to use legal drugs for health or moral reasons, they would be at a disadvantage, but it would be seen as their own fault. The Five Ideals of Fair Play 1. 2. 3. 4. 5. Respect the rules Respect the officials and their decisions Respect your opponent/s Give everybody an equal chance to participate Maintain your self-control at all times 1.1.2 Sportsmanship Sportsmanship is simply good character when participating in sports. It is about respect for opponents, officials, teammates, coaches and the games itself (Martens, 2004). Thus it is imperative to develop good character. Three steps to coach for character. Step 1 – Identify the principles of character Step 2 – Teach the principles of character Step 3 – Provide opportunities to practice Moral values Be respectful Be responsible Be caring Actions in sport • Be respectful of the game & its rule and traditions • Be respectful of your opponents • Be respectful of the officials • Be respectful in victory and defeat • Prepare yourself to do your best • Be punctual for practices and games • Be self-disciplined • Be cooperative with your teammates • Help your teammates play better • Support teammate in trouble • Be generous with praise, stingy with critics 18 • • • • • • • Be honest Be fair Be a good citizen • • • • • • Play for the team, not yourself Play by the spirit of the rules Be loyal to the team Play drug free Admit to your own mistakes Treat other players as you wish to be treated Be fair to all players, including those who are different Give other players an opportunity Play to win within the rules Be a good role model Strive for excellence Give back to the sport Encourage teammates to be good citizens Source: Martens (2004), page 59. 1.1.3 The Olympic Spirit The Olympic Spirit: “Not to win but to take part” The Olympic spirit is best expressed in the Olympic Creed: "The most important thing in the Olympic Games is not to win but to take part, just as the most important thing in life is not the triumph but the struggle. The essential thing is not to have conquered but to have fought well." The Olympic Games give us the chance to celebrate our shared humanity, and the object of the competitors should be to express this humanity by performing fairly and honestly to the best of their natural ability. The Olympic spirit can be seen in all those who compete in the Games, not just in those who win the medals. This spirit can be seen in athletes from poorer parts of the world, who have little chance to develop their skills or gain experience, but who do the best they can with limited resources, and who represent their country with pride and dignity. In the spirit of the Olympics, the most important thing is to have taken part fairly, and to have done one's best. This is what the Olympic Games are really about, and some might say it's what life is really about as well. What do you think? Word Example sentence Meaning celebrate The Olympic Games give us the chance to celebrate our shared humanity. to mark a special occasion, or to praise or highlight something special, with festive events conquer Athletes say they have to conquer their fears and doubts in order to perform at their best. to defeat or achieve victory over someone or something 19 creed The Olympic Creed always appears on the scoreboard during the Opening Ceremony. A set of basic beliefs and principles dignity Even though she wasn't the winner of her event, she did her best and performed with dignity. a sense of pride and self-respect essential One of the essential qualities of a great athlete is belief in his or her own ability. of the greatest importance; absolutely necessary fairly It's essential that athletes perform fairly, referees rule fairly, and judges score fairly. (to do something) with honesty; without cheating or bias humanity What do you think people mean when they talk about our 'shared humanity' or the 'human spirit'? the fact or condition of being human; positive qualities we share, such as benevolence object The object of athletes should be to perform to the best of their ability. the thing you want to get or achieve; what you aim to do perform Most athletes perform better in front of a crowd, possibly because of adrenalin. to carry out an activity for which one has trained, such as a sport spirit The Olympic spirit is shown when spectators applaud all the competitors, not just the winners. a special attitude or feeling associated with something struggle Every athlete has to struggle against difficulties such as injuries and defeats. to try hard, esp. when faced with difficulties or challenges take part Over 10,000 athletes will take part in the next Olympic Games. to join in (an activity); participate Source: http://www.englishclub.com/vocabulary/sports-olympics-spirit.htm.Retrieved on 16 September 2008 1.2 Sport and athletes’ character building 1.2.1 Negative aspect in sport and ways to overcome it People engaged in sports are less likely to indulge in bad habits. Since a sportsman makes lots of effort and time in order to get good performance, they will not have much spare time to consider indulging in bad habits, such as gambling, committing crime or taking drugs etc. 20 Gambling through sports is gaining more and more popular now. As a matter of fact, once soccer betting was legalized, more people are engaged in this activity. Indeed, many people wanted to use sports as a way to gain money but end up in losing it . Lots of money is being “invested” in this undesirable activity, and as a result, new social problem is triggered in society. Moreover, it may cause corruptions between the soccer team members and the gambling company. Sports Gambling All nation in the world are familiar with major addictions such as narcotics, alcohol, and tobacco. Society has spent countless millions of dollars warning about these substances, however another addiction that receives far less attention is gambling. In America, gambling has a major impact on the college campuses across the country, so much so that the executive director of the N.C.A.A., Cedric W. Demsey, in his 1997 “State of the Association” address called gambling the most serious threat facing intercollegiate athletics. Gambling in sport has among others two major impacts. First, gambling on sports just like casino gambling is addictive. Secondly, gambling on sports has hurt the integrity of sports. Because gambling on sports is causing negative consequences for athletes, and games, all government should ban all gambling on sports, and steps should be taken to decrease the prevalence of illegal and Internet gambling. Brochures and advertisement on the negative impacts that sports gambling cause should be readily available to the general public. . . Drugs in sports Drugs have been used for centuries by athletes in an attempt to improve sport performance. In fact, the breakdown of ancient Olympic Games was caused by political interference as well as drug. In more recent time, any substance that athletes believe might influence performance has been used, often in very high dosages and with disastrous effects. A cyclist, Linton was the first death of doping from using caffeine a century ago followed by another cyclist, Knud Jensen, the Danish 100 km time trial team who collapsed and died in Rome Olympic in 1960 after taking nicotinic titrate (drug used to increase the supply of blood to the leg muscles). In 1961, an inquiry into drug taking in Italian soccer revealed that 8 out of the 36 first division players tested had been taking amphetamines (Beashel & Taylor, 1992). Ben Johnson was tested positive with anabolic steroids at the Seoul Olympic in 1988. Coach is responsible for his athletes and is respected by the athletes, as such he can be a valuable medium for drug education and help reduce drugs use in sport by: a. being a good model b. communicate own belief to athletes about negative effect of drug use c. practice sound coaching principles and provide information on effectiveness of training on sport performance 21 d. provide accurate, unexaggerated and relevant information about the harmful effects of drugs e. discourage athletes from sharing medications for what may appear to be similar complaints f. discourage smoking and remind of passive smoking g. discourage alcohol drinking and never use alcohol as reward h. finding out the reasons why athletes use drugs Violence in sport Violence in sports can incorporate or be influenced by a wide range of activities, from trash talking- to unruly fan behavior to deliberate physical assaults to fighting. Athletes have become a major part of society countries around the globe. Athletics play an important role in shaping our characters and our values. While most athletes do this in a positive way there is a percentage that have a negative effect on people lives. Unfortunately there are people in this world that use violence as a way of being in control. Some men or women need to feel in control, like they are in charge. There was a quote that I came across that stated, "Sports often encourage people to define their relationship with others in terms of domination." In fact many historians tend to believe that an increase in spectator violence coincides with the commercialization of sports. Spectator violence An example of spectator violence is sport hooliganism. A hooligan is a disorderly and noisy person who behaves in a violent and destructive way. He go to matches to engage in aggressive and violent behavior before, during and after the game. 1.2.2 The formation of leadership quality through sport Leadership means (Martens, 2004): a. knowing how to chart a course, to give others direction b. developing social and psychological environment (team culture) as well physical environment The culture is created through selecting, motivating, rewarding, retaining and unifying members of the team, which includes assistants, players, parents and others. Excellent coach (leader) provides team vision and translates it into reality. Coach develops environment that ensures maximum opportunity for athletes to achieve success and consequently team success. Many people argue that sport can build leaders, but nobody has investigated exactly how this might occur (Weinberg & Gould, 2007). The following approach can help develop leadership quality: a. coaches appointed athletes to leadership positions 22 b. new players became involved with older peers through increasingly challenging competition c. parents mentored players on complex cognitive sport issues and decision making d. players maintained good relationships with peers and gained their trust e. parents supported sport involvement and activities (through monetary support, encouragement, and moral support) f. coaches provided an excellent training environment to help develop skill 1.3 Current issues 1.3.1 Ergogenic aids What are Ergogenic Aids? Erogenic aids consist of substance, drugs, procedures and even devices that are intended to improve athletic performance. Some of these substances are naturally occurring, easily available and completely legal while others are manufactured, illegal, or banned by many sporting organizations. Many athletes, coaches, politicians and fans feel the use of certain substances is unethical in sports. Ergogenic aids can be classified into five categories: a. Nutritional Ergogenic Aids i. carbohydrates, muscle glycogen and muscle glycogen super compensation ii. proteins, vitamins and iron iii. water and electrolytes b. Pharmacological Ergogenic Aids i. amphetamines ii. caffeine iii. anabolic steroids c. Physiological Ergogenic Aids i. oxygen ii. blood doping d. Psychological Ergogenic Aids i. hypnosis ii. covert rehearsal strategies iii. stress management procedures e. Mechanical Ergogenic Aids i. extrinsic biomechanical aids ii. physical warm-up 1.3.2 Winning versus sporting spirit 23 “Athletes First, Winning Second” (The motto of the American Sport Education Program, Weinberg & Gould, 2007). Every decision make by a coach should be based on what is judge as the best for athletes, and second on what may improve the athlete’s or team’s chances of winning. The above motto is hard to implement as many administrators demand coaches to practice “Winning First, Athletes Second”. This happens because administrators have their own objectives or are pressured by others. Usually, coaches who help young people become better humans but fail to win are considered losers and often are displaced or fired. In sport, the objective of every athlete and coach must be winning within the rules of the game. Emphasis on winning should not be on the winning itself but on the striving to win. In addition winning must be matched with sportsmanship. Athletes must demonstrate sportsmanship (simply good character when participating in sports) when striving to win. According to Martens (2004), athletes must have respect for opponents, officials, teammates, coaches and the games itself. “The most important thing in the Olympic Games is not to win but to take part just as the most important thing in life is not the triumph but the struggle. The essential thing is not to have conquered but to have fought well” (Barron de Coubertin, founder of the modern era of the Olympic Games, Martens, 2004: page 57) 1.3.3 Aggression in sport Any form of behavior (physical or verbal) directed toward the goal of harming or injuring another living being who is motivated to avoid such treatment (Baron & Richardson, 1994). For an act to be considered aggression, it must meet four criteria (Gill, 2000): a. it is a behavior b. it involves harm or injury c. it is directed toward a living organism d. it involves intent Sport specific aggression determinants Athletes behave aggressively because (Weinberg & Gould, 2007): a) someone has committed aggression against them b) the opposition has annoyed them c) they are highly ego oriented and have a low level of moral development d) they want to show how tough they are e) they believe it is part of their role f) they feel group pressures to be aggressive Strategies to control aggression in sport and physical activity settings 24 Situations of aggression • athletes are frustrated – losing, perceive unfair officiating , are embarrassed, are physically in pain, playing below their capabilities or poorly, overemphasis on winning Strategies for coaches • Coaches should be sensitive to detecting and controlling aggression • Detect causes of frustration, remove athlete from the situation at the first signs of aggression • Teach athletes skills to control their emotions and their reactions to frustration (eg. Simulate frustrating conditions to allow players to practice emotional control strategies under pressure) • Use modeling and reinforcement approaches • Learn appropriate behavior; differentiating aggression from appropriate, intense or assertive play • Learn to resolve conflicts and disputes in a nonviolent fashion (meet, record facts, express feelings, aims to resolve, outline necessary changes, develop action plan & have follow up on the plan) 1.3.4 Other issues a) b) c) d) Media and its effects on sport Commercialization in sport Doping in sport Other issue as suggested by participants 25 THOUGHT FOR THE DAY FOR COACHES “The game doesn’t progress through an accumulation of many championships or tournaments, but through continuous development of original ideas” “Tomorrow’s success is founded on today’s preparation” “The tragedy of coaching young players focuses on the fact that many coaches may know a lot about the game, but they don’t know their young pupils” “Youth prefer to be stimulated instead of being instructed” “Moving step by step, you may travel great distances” “Too much drill will kill” “Coaches who don’t apply new remedies should expect to suffer new troubles” “Poor performance at short term doesn’t mean that the long term objectives can not be accomplished” “You can help a player a lot by correcting him, but more by encouraging him” “There is no greater power on the playing field than the player’s intelligence” “The genuine coach generate ideas and opens the mind of his players. His far reaching task is to let the others think, instead of thinking for them” “The coach or player who doesn’t learn from defeat, will always be a beginner” “When the coaches of today tend to teach the way they were taught in the past, how we can expect progress” “The player who runs has to think, and the one who thinks has to run” “Only a coach who has got enough brain can be simple” “Mastering a skill doesn’t mean that the player knows to use it in precise moment during the game” “The development of the game is so fast these days that the coach who says it can’t be done is generally interrupted by someone doing it” 26 “If you win, you need not have to explain. If you lose, you should not there to explain” UNIT 2 SPORTS IN MALAYSIA 27 Introduction A discussion on the sporting achievements of Malaysia would not be complete if we do not flash back to the history of our participation and the golden moments achieved by our athletes in international meets. From the ’50s through the ’70s, badminton, athletics, soccer, hockey and weightlifting were among the sports which had contributed to the good name of our country in the SEA Games, Asian Games, Commonwealth Games, and the Olympics. Past athletes of the bygone era, to name a few, badminton legend Eddy Choong, Malaysia’s most outstanding sprinter M.Jegathesan, 110m hurdler Ishtiaq Mobarak, soccer giants ”Rajabola’ Ghani Minhat and ’Supermokh’ Mokhtar Dahari, cycling champions Daud Ibrahim and Ng Joo Ngan, hockey Olympian Ho Koh Chye, international tenpin bowler P.S. Nathan, and track queen of the ’70s Marina Chin and the ’Bionic Lady’ heptathlete Zaition Othman, were all household names. From the ’80s onwards, the new generation of sportsmen and sportswomen in badminton, tenpin bowling, squasy,aquatics, and wushu continued to do our country proud in international competitions. Names like, Razif and Jailani, the Sidek brothers (badminton), M.Kumaresan (cycling), Shalin Zulkifli (tenpin bowling), Lim Keng Liat (swimming), Nicol David (squash), Lim Chong Wei (badminton), Bryan Nickson (diving), and Chai Fong Yin (wushu) are all synonymous with our sporting achievements and our capacity to accept challenges at the world level reflecting our spirit of ’Malaysia Boleh’ Malaysia in the international sports arena - Participation & Achievements SEA Games The Southeast Asian Games (also known as the SEA Games),is a biennial multi-sports event involving participants from the member countries of Southeast Asia. Originally, the SEA Games was called SEAP Games or in full, the Southeast Asian Peninsula Games. Thailand, Laos, South Vietnam, , Burma ( now Myanmar) ,Malaya (now Malaysia) Singapore were the founding members that agreed to the formation of the ‘SEAP Games Federation Committee’ (SGF) in 1958. Currently there are 11 nations that are members of the SEA Games Federation. In 1959, Bangkok, Thailand, hosted the first SEAP GAMES. Up to 2007, the SEA Games had been contested 24 times and members of the SGF took turns to organize the event. Malaysia played host in 1965, 1971, 1977, 1989, and 2001. The outstanding achievements by our athletes in the 21st SEA Games in 2001 is of great historical significance for Malaysia. The 111 gold medals won by our athletes represent the highest number of gold ever achieved by our national contingent in the SEA Games. This figure surpassed the 67 gold medals won by the 1989 SEA Games contingent. 28 Malaysia - participation and achievements in SEA Games (1959-2007) No Year Venue 1 2 1959 1961 1963 3 4 5 6 7 8 9 10 11 1965 1967 1969 1971 1973 1975 1977 1979 1981 Bangkok Rangoon (Cancelled) Cambodia K. Lumpur Bangkok Rangoon K Lumpur Singapore Bangkok K Lumpur Jakarta Manila 12 13 14 15 16 1983 1985 1987 1989 1991 Singapore Bangkok Jakarta K Lumpur Manila 17 18 19 20 21 22 1993 1995 1997 1999 2001 2003 23 2005 Singapore Chiangmail Jakarta B.S Begawan K Lumpur Hanoi & HCM City Manila 24 2007 25 2009 Nakhon Ratchasima Vientiane Malaysia’s achievement G S B Host Country Thailand Burma 8 12 Malaysia Thailand Burma Malaysia Thailand Malaysia Indonesia Philippine s Thailand Indonesia Malaysia Philippine s Thailand Indonesia Brunei Malaysia Vietnam Philippine s Thailand 15 16 11 16 % Gold Medal won Placin g 34 44 No. of gold medal s at stake 67 79 11.94 15.19 3/6 3/7 Ttl 33 23 16 41 30 27 25 18 16 36 29 24 43 35 49 42 23 27 29 43 39 55 49 51 43 59 31 98 95 79 139 114 127 110 100 74 135 143 146 143 161 176 190 227 225 24.44 16.08 10.96 28.67 18.63 15.34 13.16 7.93 7.11 2/7 3/6 4/6 2/7 3/7 4/4 4/7 5/7 4/7 16 26 36 67 36 25 28 41 58 38 40 31 67 76 65 81 85 144 201 139 209 255 348 302 326 7.66 10.20 10.34 22.19 11.04 6/8 4/8 4/8 2/9 4/9 43 31 55 57 111 44 45 49 68 45 75 42 65 69 75 42 85 59 153 149 198 144 271 145 317 334 438 230 392 445 13.56 9.28 12.56 24.78 28.32 9.89 5/8 4/10 3/10 2/10 1/11 5/11 61 50 64 175 444 13.86 4/11 68 52 96 216 477 14.23 2/11 Laos An analysis from the table shows that: 1. The Malaysian contingent has always done well when the SEA Games is hosted in Malaysia. 2. Except for the 9th SEA Games in 1977 in Kuala Lumpur, the Malaysian Contingent has always won over 20% of the gold medals in contention, when Malaysia hosted the Games. 29 3. When the host country is either Indonesia or Thailand, the domination by the host country is so strong that the chance for Malaysia to win more gold medals is reduced. Asian Games Also known as Asiad , the Asian Games is the biggest sports competition in the continent of Asia. This multi-sports event is held every four years attracting top sportsmen and sportswomen from the all the member countries. The Asian Games is organized under the regulations of the Asia Olympic Council OCA) with supervision by the International Olympic Council (IOC). According to its history, the Asian Games was mooted by Dutt Sondhi, India’s IOC representative. He put forth the idea during the Olympics Games in 1948 held in London. As a result, the Asian Games Federation was formed and it was decided to have the first Asian Games in India with New Delhi as the host city in 1951. The first time Malaysia participated was in the second Asian Games held in Manila, Philippines in 1954. In the 1966 Asian Games in Bangkok, our national track and field team won 5 gold medals. This achievement proved that the 60s were the golden era of Malaysian athletics. Among the well known athletes were M.Jegathesan, Natashar Singh, Rahim Ahmad, Cheryl Dorall, R. Subramaniam, M.Rajamani, and Ishtiaq Mobarak. In the 2006 Asian Games in Doha, Malaysia won 42 medals. To date, this was the best achievement so far in terms of medal haul by our contingent in the Asian Games. Malaysia’s achievements in Asian Games 1954-2006 YEAR 1951 1954 1958 1962 1966 1970 1974 1978 1982 1986 1990 1994 1998 2002 2006 2010 VENUE New Dehli Manila Tokyo Jakarta Bangkok Bangkok Teheran Bangkok New Dehli Seoul Beijing Hiroshima Bangkok Busan Doha Guanzhou MEDALS 0 0 0 0 2 4 7 5 5 1 0 1 2 1 1 0 0 5 2 2 4 2 5 10 6 8 8 17 0 3 8 6 7 4 3 3 5 4 13 14 16 17 TOTAL DNP* 0 3 14 18 13 5 6 4 10 8 19 29 30 42 * Did Not Participate 30 Commonwealth Games Starting from the first meet in 1930 until the fourth in 1950, the competitions were known as the British Empire Games. Later, due to further historical developments, the name was changed to British Empire & Commonwealth Games (1954) and then again renamed British Commonwealth Games (1966). Finally, in 1978 the name Commonwealth Games was adopted and has remained until today. Malaysia’s achievements The history of Malaysia’s involvement in the Commonwealth Games ( British Empire Games then) started in 1950 when Auckland,New Zealand hosted the second Games. Malaysia participated only in the weightlifting event. The four weightlifters showed outstanding performance and won a medal each in their respective events. In Perth, Australia,1962, Malaysia took part in 4 sports, namely, athletics, swimming, cycling and weightlifting. Malaysia’s only achievement came from weightlifting which secured one bronze medal from the featherweight event. In all the Commonwealth Games which Malaysia took part between 1970-1990, badminton continuously gave excellent performance and contributed medals to our achievements. In 1994, Malaysia sent athletes for 8 sports in the Commonwealth Games held in Victoria, Canada. Once again, our badminton players helped Malaysia’s medal collection by winning 6 medals (2G,2P,2B). The seventh medal came from our traditional contributor, weightlifting, which contributed a bronze, Malaysia’s achievements in the Commonwealth Games 1950-2006 YEAR 1950 1954 1958 1962 1966 1970 1974 1978 1982 1986 1990 1994 1998 2002 2006 2010 VENUE Auckland, New Zealand Vancouver, Canada Cardiff, Wales Perth,Australia Kingston, Jamaica Edinburgh,Scotland Christchurch,N.Zealand Edmonton, Canada Brisbane, Australia Edinburgh,Scotland Auckland,New Zealand Victoria, Canada Kuala Lumpur,Malaysia Manchester, UK Melbourne.Australia G MEDALS S 2 0 0 0 2 1 1 1 1 2 2 10 7 7 1 0 2 0 2 1 0 2 0 2 3 14 9 12 Total B 1 0 0 1 1 1 3 1 1 0 2 12 18 10 4 0 2 1 5 3 4 4 2 DNP* 4 7 26 34 29 *Did Not Participate 31 1998 was a historic and challenging year for Malaysia for being the host country for the XVI Commonwealth Games which was held in Kuala Lumpur. Malaysians had the opportunity to witness and assess the performance of our national athletes who were trained under the Program Jaya ’98. The National Sports Council of Malaysia launched this 4-year plan project in 1994 to prepare our national athletes for international competitions with the KL Comonwealth Games as the climax. The Malaysian contingent won 10 Gold medals , 14 Silver, and 12 Bronze. With this best ever Commonwealth Games medal haul, Malaysia was ranked 4th in the overall positions of the participating teams. This achievement has remained Malaysia’s best ranking in all the Commonwealth Games it has taken part in. Names like Sapok Biki (boxing), G. Saravanan (athletics), Hamidon Hidayat (weightlifting), Nuruhuda Baharin (shooting), and the rhythmic gymnastic team members began to receive public attention in Malaysia when they each won a gold medal for their sports. In the 2002 Manchester Games, badminton, our traditional medal contributor, won 3 gold medals. Weightlifting contributed another 3 gold medals through Amirul Hamizan who also set three new records. Sports that contributed to Malaysia’s medal tally. (1998 KL Commonwealth Games) No Sport Achievement G 1 2 3 4 5 6 7 8 9 Athletics Badminton Lawn Bowl Boxing Cycling Rythmic Gimnastics Hockey (Men) Shooting Weightlifting 1 3 2 1 1 1 1 S 4 1 1 1 1 1 1 B 1 1 2 3 3 Olympic Games The Olympic Games is the biggest sporting event in the world. This multi- sports gathering takes place every four years. The top teams and athletes representing their countries come together in this meet and compete in the tradition enshrined in the Olympic spirit. The first modern Olympics was held in Athens, Greece, in the year 1896. Twelve nations represented by their 500 athletes competed . Malaysia first took part in 1956 when the Olympic Games was held in Melbourne,Australia. The Malaysian contingent consisted of 33 athletes who competed in 5 sports, hockey, weightlifting, athletics, swimming, and shooting. In this first international Olympic outing, the national hockey team managed a creditable 9th placing out of 12 teams. 32 The national soccer team created history when it successfully went through the qualifying rounds and played in the Munich Olympic in 1972. Malaysia has taken part in all the Olympic Games so far except for the 1980 Olympic Games in Moscow, USSR, where Malaysia along with many other countries boycotted the Games for political reasons. If not for this boycott, our national soccer team would have seen action for the second time in the Moscow Olympics. Until today, so far all the medals won by Malaysia in the Olympics came from the badminton players. In the 1992 Olympics in Barcelona, Spain, badminton doubles pair, Razif and Jailani Sidek became the first two Malaysian sportsmen to win a medal each when they won the bronze medal. In Atlanta, 1996, another badminton doubles pair, Cheah Soon Kit and Yap Kim Hock captured the silver medal in the Olympics. National player Lim Chong Wei won the silver in the 2008 Beijing Olympics. Achievements in Olympic Games No 1 2 3 4 5 6 7 8 Year/Venue 1956 Melbourne,Australia 1964 Tokyo, Japan 1968 Mexico City,Mexica 1972 Munich,Germany 1992 Barcelona,Sepanyol 1996 Atlanta,USA 2004 Athens, Greece 2008 Beijing, China Sport Hockey (Men) Athlete Athletics 200m M Jegathesan Semifinal -21.4s Athletics 200m M Jegathesan Semifinal Soccer National team Badminton (Doubles) Badminton (Doubles) Razif Sidek Jailani Sidek Cheah Soon Kit Yap Kim Hock Qualified for final round Bronze medal Swimming 100m Breast Stroke Cycling (Kerin) Badminton Archery -3man-Team -Individual Achievement 9/12 placing Silver medal Lim Keng Liat Entered Semi final Josiah Ng Entered final round Lim Chong Wei Silver medal Marbawi, CS Cheng & Khalmizan CS Cheng Entered 1/4final Entered Top 8 Success in other World Level Competitions Besides the achievements in regional competitions and the Olympic Games, Malaysian sportsmen and sportswomen had also shown outstanding performances in many other international meets. Our national badminton team had won the Thomas Cup, the supremacy of world -class badminton, 4 times. Also, Malaysian badminton players had won numerous singles and doubles titles in tournaments such as the All England and World GP Circuit. 33 Eddy Choong was the first Malaysian player to win the All England singles title in 1953. Subsequently, other Malaysian players too recorded great success in other years when they captured the singles and the doubles titles in competitions all over the world. After Hafiz Hashim who became the All England champion in 2003, no other Malaysian player has recaptured the prestigious title. In their All England debut in 2006, doubles pair Tan Boon Heong-Koo Keen Kiat emerged as champions. However, in the 2008 Beijing Olympics, the much expected pair failed to perform to general expectation. Apart from having qualified and participated in a few Olympics, the best performance so far by our national hockey team was the 4th placing in the 1975 World Cup tournament held in Kuala Lumpur. In that semi-final match India defeated Malaysia . Another historic achievement by our national hockey team was when they emerged silver medallists in the 1998 Kuala Lumpur Commonwealth Games. In tenpin bowling, since the time of P.S.Nathan, Malaysian bowlers were highly regarded by players from other countries. In 2005, our bowlers captured 24 international titles and this increased to 32 the following year. Shalin Zulkifli is synonymous with the success of Malaysia in the international bowling arena. Without doubt, in the ’90s, tenpin bowling outshone other sports in Malaysia with Shalin’s success after success in winning titles both in national and international competitions. Her fantastic performances at international level had injected great interest in bowling among the younger potential players in Malaysia. As an example, in 2005, Esther Cheah achieved the distinction of being the youngest female bowler ever to win the World Tenpin Bowling Competition. In the same year, Malaysian bowlers captured 24 international titles and went on to win 32 titles in 2006. Apart from badminton and tenpin bowling, squash has also made Malaysia proud in international sports competitions. In 1998, at the age of 15 ,Nicol David was crowned the World’s Women Junior Squash champion. With that historic achievement, she became the youngest player to win the prestigious world title. This ‘squash queen’ went on to chalk up more success and set an invincible record in Asia when she won the Asia championship five times (1998,2000,2002,2004 and 2006). In 2005, at the age of 22, she became the youngest female player to win the Women’s World Open in Hong Kong. In 2007, with her consistent outstanding performance in all the competitions she added 8 WISPA titles to her name. Conclusion Malaysia has yet to a win an Olympic gold medal, be it from an individual athlete or from a team event. Malaysia is not lacking in terms of training facilities. Also, we have various incentives for athletes who achieve excellence in their sports. In coaching, where local expertise is lacking, the national sports associations with the financial assistance of the National Sports Council of Malaysia, has engaged foreign coaches to train our elite and potential athletes. From time to time, ambitious development programmes and training projects have been carried out to win the elusive Olympic gold medals. Malaysia has a rich sports history and it is important for us to learn about the lives and struggles of our past and present world-standard sportsmen and sportswomen. We have 34 to made an in-depth comparison of our training system with that of the successful countries. This will enable us to gain an insight into the effort required to reach sporting excellence of international standard. Also, an understanding of the struggles and sacrifices by sports legends, both local and foreign, can serve as a motivation and help our future national athletes to scale greater heights in international meets. “MALAYSIA BOLEH” References: 1. Mohd Salleh Aman (2004) Sukan Dalam Masyarakat Malaysia, Penerbit Univ. Malaya,K Lumpur,Malaysia. 2. L.B.Ooi (200) Way of the Champions, Percetakan Solai Sdn Bhd, P.J. Malaysia. 3._________ (1998), Sukan Komanwel Dari Hamilton ke Kuala Lumpur (1930-1998), Arkib Negara Malaysia. 4 .C.J.Chong,E.S.Tan (1995),Legends of the Flame,Pan Pacific Publications, Sinapaore. 5. J.Johari,S.Ishak,A.R.A.Ghaffur,(1995),JAGUH MAKSAK,Penerbitan MAKSAK Malaysia. 6. http://en.wikipedia org/wiki Southeast Asia Games rtrvd 10.10.2008 Examples of outstanding achievements by Malaysian athletes in international competitions No Name (year born) Sport Year & Competition 1 Eddy Choong (1930) Badminton All-England 1953, 1954,1956,1957 Athletics 200m 2 M.Jegathesan (1943) 100m 4x100m 200m 3 Mohd.Razif Sidek Badminton 35 International achievement Singles champion 4 times. All-England 1952,1953,1954 Olimpic Games 1964 Tokyo 1968 Mexico Doubles champion 3 times Asian Games 1966 Bangkok As above Gold medal Asian Games 1962 Jakarta Olimpic Games 1992 All England 1982 1983,1989 Gold medal Entered semifinals Entered semifinals Gold medal Bronze medal Champions Runners-up (1962) & Mohd.Jailani Sidek (1963) 4 Lee Chong Wei ( 1982 ) Badminton 5 Ishtiaq Mubarak (1948 ) Athletics 110m Hurdles 6 7 8 M.Rajamani (1943) Daud Ibrahim (1947) Athletics 400m Cycling Cycling (sprint) Josiah Ng (1980) World Cup 1982,1988,1990,1991 1986,1987 World GP 1986,1989,1991 Commonwealth Games 1990 1998 Commonwealth Games 2007 Indonesia Open 2008 Beijing Olimpic Games Olimpic Games 1968 Mexico 1972 Munich 1976 Montreal 1973 ATF,Seoul 1974 ATF Manila Asian Games 1974 Teheran 1966 Bangkok SEA Games 1965 (200m,400m,800m & 4X100m) Asian Games 1966 Bangkok, 200m 4X100m Asian Games 1970 Bangkok SEA Games 1971 KL Commonwealth Games 1974 Christchurch Olympic Games 1972 Munich 2002 Commonwealth Games Manchester (sprint) Champions Runners-up Champions Champions Goldmedal Champion Silver medal Entered semifinals Gold medal Silver medal Silver medal Bronze medal 4 Gold medals (all new records) Gold medal Bronze medal Gold medal 5 gold medals participant participant Final 5th position -3rd 2004 World Cup, Mexico 9 Lim Keng Liat ( ) (keirin) (sprint) 6th Athens Olympic Games 11th 2004 Swimming 100m b/s 1998 Asian Bangkok 50m b/s 100m b/s Silver medal 2002 Commonwealth Bronze medal Games Manchester 36 Games Gold medal Entered semifinals 100m b/s 10 11 12 Nurul Huda Abdullah ( ) Swimming Daniel Bego (1990) Swimming 100m kk-k Shalin Zulkifli (1978) TP Bowling 2004 Olimpic Athens - SEA Games 1985 Bangkok 1987 Jakarta Games, 14 15 Amirul Hamizan Ibrahim ( 19 ) Nicol David (1983) Bryan Nickson (1990) World Junior Bowling Mexico 1994 Manila 1997, Incheon 1998 -World Masters London 2001 Grand Slam Asia Singapore 2003 Weightliftin 2002 Commonwealth g (56 kg) Games Manchester 2001 World Women Junior Squash Kej. Skuasy Asia 1998,2000,2002, 2004,2006 Kej.Terbuka Wanita Dunia 2005,2006,2007 Kej. Skuasy Terbuka di 5 buah negara 2005 Ranking Dunia 20062008 2004 Olimpik Athens Diving -World Meet 2008 Olimpik Beijing 37 -5 new World Junior Meet 2006 Brazil Silver medal Olimpic Games 2008 Beijing 1994 Asian Games, Hiroshima 2 Gold - 2004 World Ranking -2004 Masters Open in 4 countries 13 7 Gold 7 Gold records Bronze Gold Gold Champion Champion Ranking No 2 Champion 3 Gold records) (3 new Champion 5 X Johan Johan3 kali 5 X Johan No. 1 Youngest M’sian athlete 7th- qlfd for Beijing. participant Examples of outstanding achievements by Malaysian teams in international competitions No 1 Sport Hockey (Men) Year 1975 1972 Competition Best performance 3th World Cup in 4th position Kuala Lumpur 16th Commonwealth Silver medal Games in KL Junior World Cup 4th position Ipoh Munich Olympics Qualified and played in Munich. 1980 Moscow Olympics 1998 2 3 4 5 6 Hockey (Men Junior) Soccer 1979 Qualified to play in Moscow but joined in boycott of the Games. Commonwealth Gold medal for Team Event Rythmic 1998 Gymnastics 4X100m relay 1966 team 1952 Badminton 1955 (Men) 1967 1992 2006 2007 KL Games Asian Games Bangkok Thomas Cup Thomas Cup Thomas Cup Thomas Cup Asian Games All-England Tenpin Bowling 1994 (Women) 1995 Sukan Asia ,Jepun Kej Boling Dunia di AS Gold medal (trios) Silver medal Beijing Olympics Enterend ¼ finals in Gold medal Champion –first time Champion Champion Champion Champion (doubles) Champion (doubles) Tenpin Bowling (Men) 7 Archery -3-man Team 2008 Players win, players lose, players prepare, players practice,players get hurt but players get up. No matter what the outcome is , players play. “ Everyone thinks of changing the world but no one thinks of changing himself ” UNIT 3 38 ANATOMY AND SPORT PHYSIOLOGY Hormones and Exercise There are many physical, mental, and physiological benefits to regular exercise. One category of benefits is the impact that exercise has on many of your body's hormones. 39 Hormones are chemical messengers within your body that affect almost all aspects of human function. Growth Hormone • Stimulates protein synthesis (muscle tone/development), and strength of bones, tendons, ligaments, and cartilage. • Decreases use of glucose and increases use of fat as a fuel during exercise. This helps to reduce body fat and to keep blood glucose at a normal level which helps you to exercise for a longer period of time. • Release of growth hormone from the pituitary gland in the brain is increased with increasing aerobic exercise time, especially more intense exercise such as interval training. Endorphins • • • An endogenous upload from the pituitary gland that blocks pain, decreases appetite, creates a feeling of euphoria (the exercise high), and reduces tension and anxiety. Blood levels of endorphins increase up to five times resting levels during longer duration (greater than 30 minutes) aerobic exercise at moderate to intense levels and also during interval training. After several months of regular exercise, you develop an increased sensitivity to endorphins (a higher high from the same level of endorphins), and endorphins that are produced tend to stay in your blood for a longer period of time. This makes longer duration exercise easier (you're feeling no pain) and it causes your exercise high to last for a longer period of time after exercise. Testosterone • • • An important hormone in both males and females for maintaining muscle tone/volume/strength, increasing basal metabolic rate (metabolism), decreasing body fat, and feeling self-confident. It's produced by the ovaries in females and by the testes in males. Females have only about one tenth the amount of testosterone that males do, but even at that level in females it also plays a role in libido and intensity of orgasms. Production of testosterone in females begins to decline as a woman begins to approach menopause and in males it begins to decline in his forties. Blood levels of testosterone increase with exercise in both males and females beginning about 20 minutes into an exercise session, and blood levels may remain elevated for one to three hours after exercise. Estrogen • The most biologically active estrogen, 17 beta estradiol, increases fat breakdown from body fat stores so that it can be used and fuel, increases basal metabolic rate (metabolism), elevates your mood, and increases libido. This 40 • hormone is at much higher blood levels in females, but the ovaries begin to produce less of it as a woman begins to approach menopause. The amount of 17 beta estradiol secreted by the ovaries increases with exercise, and blood levels may remain elevated for one to four hours after exercise. Thyroxine (T4) • • A hormone produced by the thyroid gland, Thyroxine increases the metabolic rate ("metabolism") of almost all cells in the body. This increase in "metabolism" helps you to feel more energetic and also causes you to expend more calories, and thus is important in weight loss. Blood levels of thyroxine increase by about 30% during exercise and remain elevated for several hours afterward - this period of time is increased by an increase in intensity and/or duration of exercise. Regular exercise also increase thyroxine levels at rest. Epinephrine • • • A hormone produced primarily by the adrenal medulla that increases the amount of blood the heart pumps and directs blood flow to where it's needed. Stimulates breakdown of glycogen (stored carbohydrate) in the active muscles and liver to use as fuel. It also stimulates the breakdown of fat (in stored fat and in active muscles) to use as fuel. The amount of epinephrine released from the adrenal medulla is proportional to the intensity and duration of exercise. Insulin (adrenaline) • • • • An important hormone in regulating (decreasing) blood levels of glucose ("blood sugar") and in directing glucose, fatty acids (fat), and amino acids (protein) into the cells. Insulin secretion by the pancreas is increased in response to a rise in blood sugar and/or amino acids (protein) as is often the case after a meal. Typically, the larger the meal, or the greater the quantity of simple sugars consumed, the larger the insulin response. An excessive insulin response causes fat production within the cells - thus, insulin is sometimes called the "fat hormone". Many overweight people's cells develop a resistance to insulin so that it takes more insulin to have the same effect. This creates a situation where blood levels of insulin are higher than normal. This condition is often improved by losing weight and daily aerobic exercise. Blood levels of insulin begin to decrease about 10 minutes into an aerobic exercise session and continue to decrease through about 70 minutes of exercise. Regular exercise also increases a cell's sensitivity to insulin at rest. Glucagon 41 • • • A hormone that is also secreted by the pancreas, but it's job is to raise blood levels of glucose ("blood sugar"). When blood sugar levels get too low, glucagon is secreted and causes stored carbohydrate (glycogen) in the liver to be released into the blood stream to raise blood sugar to a normal level. It also causes the breakdown of fat so that it can be used as fuel. Glucagon typically begins to be secreted beyond 30 minutes of exercise when blood glucose levels may begin to decrease. So, next time you're exercising, think about all the wonderful things that are happening to your hormones. It might even make you want to do more exercise! ENDORPHINS Endorphin is a type of hormone which is also a natural painkiller: a substance in the brain that attaches to the same cell receptors that morphine does. Endorphins are released when severe injury, or high aerobic activity occurs, often abolishing all sensation of pain and creating a sense of euphoria. Types of Endorphins. • Beta-endorphins are produced by the pituitary gland and are believed to produce a greater "high" than the other types of endorphins. The betaendorphin is generally believed to provide a considerable amount of natural pain relief. Some scientists believe it is due to beta-endorphins that some people who experience a traumatic injury, such as the loss of a limb, experience little or no immediate pain. • Alpha-endorphins have been studied since the 1970's, but little is known about how they affect the body. Some research suggests that alphaendorphins may stimulate the brain in ways similar to amphetamines and others claim that they may help treat anaphylactic shock and similar conditions. • Gamma-endorphins have also been researched since the 1970's, but most of the information on how the substance affects the body is pure speculation. Some studies show that they have antipsychotic effects on patients suffering from disorders such as schizophrenia, while others show that they may help regulate blood pressure. How Do Endorphins Work? Endorphins act by locking into receptors in the nervous system for chemicals that transmit pain messages to the brain. Once the endorphin, or the "key", is in the "lock," pain causing chemicals are prevented from transmitting their messages (Rathus and Nevid 2003). Endorphins interact with the opiate receptors in the brain to reduce our perception of pain, similar to the drugs morphine and codeine. The body's release of endorphins, however, does not lead to addiction like morphine and codeine might. Releasing Endorphins The release of endorphins is different based on each individual. Certain foods such as chocolate and chili peppers can lead to enhanced production of endorphins. Laughter is thought to release endorphins into the brain. Strenuous 42 exercise, exposure to ultraviolet light, massage therapy, and acupuncture can also activate endorphin production. Effects of Endorphins General Effects "Reduce pain and anxiety and increase the feeling of well being. They stimulate the immune system, and they help you learn. They reduce appetite for drug and alcohol seeking behavior. Endorphins also affect our reaction to light and darkness." Pain Relief "The brain responds to pain signals by producing and activating morphine-like hormones called endorphins. This pain relief effect lasts for about 30 hours (longer than known analgesics), and without side effects when given frequently." Training for Aerobic and Anaerobic Power General Principles of Training • • Individuality: any training program must consider the specific needs and abilities of the individual for whom it is designed Specificity: adaptations to training are highly specific to the nature of the training activity and should be carefully matched to an athlete’s specific performance needs • Reversibility: training programs must include a maintenance plan to ensure that the gains from training are not lost • Progressive overload: the training stimulus must be progressively increased as the body adapts to the current stimulus • Hard / easy: programs must alternate high-intensity workouts with low-intensity workouts to help the body recover and achieve optimal training adaptations • Per iodization: the gradual cycling of specificity, intensity, and volume of training to achieve peak levels of fitness for competition Aerobic Power • • The rate of energy release by cellular metabolic processes that depend on the involvement and availability of oxygen Maximal aerobic power is the maximal capacity for aerobic resynthesis of ATP Anaerobic Power • The rate of energy release by cellular metabolic processes that function without the involvement of oxygen 43 • Maximal anaerobic power is the maximal capacity of the anaerobic system to produce ATP Anaerobic and Aerobic Power Training Programs • • Programs are designed along a continuum Anaerobic power is represented by the ATP-PCr system and anaerobic glycolytic system, while aerobic power is represented by the oxidative system Short sprints ATP-PCr system Longer sprints, interval training Glycolytic system Longer distance Oxidative system Interval training 44 Variables to Manipulate for Interval Training • • Rate of the exercise interval Distance of the exercise interval • Number of repetitions and sets during each training session • Duration of rest or active recovery interval • Type of activity during the active recovery interval • Frequency of training per week 45 Blood Lactate Concentration in a Single Runner After a Single Set of 5 Repetitions of Interval Training at 3 Different Paces Types of Training • • Interval training Continuous training • Interval-circuit training Anaerobic and Aerobic Power Training Key Points • • Training programs are designed to train one or more of the three metabolic energy systems Interval training consists of repeated bouts of high- to moderate-intensity exercise interspersed with periods of rest or reduced-intensity exercise • Exercise intensity and recovery rate can be monitored with a heart rate monitor • Interval training is appropriate for all sports 46 • Continuous training has no rest intervals and can vary from LSD training to highintensity training • Fartlek training is an excellent activity for recovering from several days of more intense exercise • Interval-circuit training combines interval training and circuit training into one workout Objective of Aerobic and Anaerobic Training Aerobic (endurance) training • Improved central and peripheral blood flow • Enhances the capacity of muscle fibres to generate ATP Anaerobic training • • Increased short-term, high-intensity endurance capacity Increased anaerobic metabolic function • Increased tolerance for acid–base imbalances during highly intense effort Endurance Muscular endurance: the ability of a single muscle or muscle group to sustain highintensity repetitive or static exercise Cardio respiratory endurance: the entire body’s ability to sustain prolonged, dynamic exercise using large muscle groups Evaluating Cardio respiratory Endurance VO2max • • Highest rate of oxygen consumption attainable during maximal exercise VO2max can be increased by 10-15% with 20 weeks of endurance training Increases in VO2max With Endurance Training Flick equation: VO2 = SV × HR × (a-v)O2 diff 47 Changes in VO2max With 12 Months of Endurance Training Cardiovascular Adaptation to Training • • Heart size Stroke volume • Heart rate • Cardiac output • Blood flow • Blood pressure 48 • Blood volume Percentage Differences in Heart Size Among Three Groups of Athletes Compared With Untrained Group Heart Size (Central) Adaptation to Endurance Training Key Points • • The left ventricle changes significantly in response to endurance training The internal dimensions of the left ventricle increase as an adaptation to an increase in ventricular filling secondary to an increase in plasma volume and diastolic filling time • Left ventricular wall thickness and mass increase, contractility 49 allowing for greater Measuring Heart Size: Echocardiography Changes in Stroke Volume With Endurance Training 50 Stroke Volume Adaptations to Endurance Training Key Points • • Endurance training increases SV at rest and during sub maximal and maximal exercise Increases in end-diastolic volume, caused by an increase in blood plasma and greater diastolic filling time (lower heart rate), contribute to increased SV • Increased ventricular filling (preload) leads to greater contractility (Frank-Starling mechanism) • Reduced systemic vascular resistance (after load) Heart Rate Adaptations to Endurance Training Resting • • Decreases by ~1 beat/min with each week of training Increased parasympathetic (vagal) tone 51 Sub maximal • Decreases heart rate for a given absolute exercise intensity Maximal • Unchanged or decreases slightly Changes in Heart Rate With Endurance Training Heart Rate Recovery • • The time it takes the heart to return to its resting rate after exercise Faster rate of recovery after training • Indirect index of cardio respiratory fitness • Prolonged by certain environments (heat, altitude) • Can be used as a tool to track the progress of endurance training 52 Changes in Heart Rate Recovery With Endurance Training Cardiac Output Adaptations to Endurance Training Q = HR x SV • • Does not change at rest or during sub maximal exercise (may decrease slightly) Maximal cardiac output increases due largely to an increase in stroke volume Changes in Cardiac Output With Endurance Training 53 Cardiac Output Adaptations Key Points • • • Q does not change at rest or during sub maximal exercise after training (may decrease slightly) Q increases at maximal exercise and is largely responsible for the increase in VO2max Increased maximal Q results from the increase in maximal SV Blood Flow Adaptations to Endurance Training Blood flow to exercising muscle is increased with endurance training due to: • • Increased capillarization of trained muscles Greater recruitment of existing capillaries in trained muscles • More effective blood flow redistribution from inactive regions • Increased blood volume • Increased Q 54 Blood Pressure (BP) Adaptations to Endurance Training • • • Resting BP decreases in borderline and hypertensive individuals (6-7 mmHg reduction) Mean arterial pressure is reduced at a given sub maximal exercise intensity (↓ SBP, ↓ DBP) At maximal exercise (↑ SBP, ↓ DBP) Blood Volume (BV) Adaptations to Endurance Training • • • BV increases rapidly with endurance training Plasma volume increases due to: – Increased plasma proteins (albumin) – Increased antidiuretic hormone and aldosterone Red blood cell volume increases 55 • Haemoglobin increases Increases in Total Blood Volume and Plasma Volume With Endurance Training Blood Flow, Pressure, and Volume Adaptations to Endurance Training Key Points • • Blood flow to active muscles is increased due to: – ↑ Capillarization – ↑ Capillary recruitment – More effective redistribution – ↑ Blood volume Blood pressure at rest as well as during sub maximal exercise is reduced, but not at maximal exercise Blood Flow, Pressure, and Volume Adaptations to Endurance Training Key Points • Blood volume increases 56 • Plasma volume increases through increased protein content and by fluid conservation hormones • Red blood cell volume and haemoglobin increase • Blood viscosity decreases due to the increase in plasma volume Respiratory Adaptations to Endurance Training Key Points • • Little effect on lung structure and function at rest Increase in pulmonary ventilation during maximal exercise • ↑ Tidal volume • ↑ Respiratory rate • Pulmonary diffusion increases at maximal exercise due to increased ventilation and lung perfusion • (a-v)O2 difference increases with training, reflecting increased extraction of oxygen at the tissues Adaptations in Muscle to Endurance Training • Increased size (cross-sectional area) of type I fibres Transition of type IIx → type IIa fiber characteristics • Transition of type II → type I fiber characteristics • Increased number of capillaries per muscle fiber and for a given cross-sectional area of muscle • Increased myoglobin content of muscle by 75% to 80% • • 57 Increased number, size, and oxidative enzyme activity of mitochondria Change in Maximal Oxygen Uptake and SDH Activity With Endurance Training Gastrocnemius Oxidative Enzyme Activities of Untrained (UT) Subjects, Moderately Trained (MT) Joggers, and Highly Trained (HT) Runners Adapted, by permission, from D.L. Costill et al., 1979, "Lipid metabolism in skeletal muscle of endurance-trained males and females," Journal of Applied Physiology 28: 251-255 and from D.L. Costill et al., 1979, "Adaptations in skeletal muscle following strength training," Journal of Applied Physiology 46: 96-99. Adaptations in Muscle With Training Key Points • • Type I fibers tend to enlarge Increase in type I fibers and a transition from type IIx to type IIa fibers • Increased number of capillaries supplying each muscle fiber • Increase in the number and size of muscle fiber mitochondria • Oxidative enzyme activity increases 58 • Increased capacity of oxidative metabolism Metabolic Adaptations to Training • Lactate threshold increases due to: – Increased clearance and/or decreased production of lactate – Reduced reliance on glycol tic systems • Respiratory exchange ratio decreases due to: – • Increased utilization of free fatty acids Oxygen consumption (VO2) – Unchanged (or slightly reduced) at submaximal intensities – VO2max increases – Limited by the ability of the cardiovascular system to deliver oxygen to active muscles Changes in Lactate Threshold With Training 59 Changes in Race Pace With Continued Training After VO2max Stops Increasing Increased Performance After VO2max Has Peaked Once an athlete has achieved her genetically determined peak VO2max, she can still increase her endurance performance due to the body’s ability to perform at increasingly higher percentages of that VO2max for extended periods. The increase in performance without an increase in VO2max is a result of an increase in lactate threshold. Limiting Factors to VO2max & Endurance Performance • Four factors limiting VO2max – Respiration (pulmonary diffusing capacity) – • O2 diffusion • Ventilation Central circulation • Cardiac output; Increasing Q contributes to the ability to increase VO2max. • Arterial blood pressure 60 • – – Hemoglobin concentration Peripheral circulation • Flow to non exercising regions • Muscle blood flow • Muscle capillary density • O2 diffusion • Muscle vascular conductance • O2 extraction • Hb – O2 affinity Muscle metabolism • Enzymes and oxidative potential • Energy stores • Myoglobin • Mitchondria – size and number • Muscle mass and fiber type • Substrate delivery Cardiac Output • • Increasing Q contributes to the ability to increase VO2max Ability to increase Q brought by redistribution of blood from the non-exercising tissue/organ region (mainly splanchnic and spleen) 61 Cardio respiratory Endurance and Performance • • It is the major defense against fatigue Should be the primary emphasis of training for health and fitness • All athletes can benefit from maximizing their endurance Adaptations to Aerobic Training Key Points • • Although VO2max has an upper limit, endurance performance can continue to improve An individual’s genetic makeup predetermines a range for his or her VO2max and accounts for 25-50% of the variance in VO2max • Heredity largely explains an individual’s response to training • Highly conditioned female endurance athletes have VO2max values about 10% lower than their male counterparts 62 • All athletes can benefit from maximizing their cardio respiratory endurance Summary of Cardiovascular Adaptation to Chronic Endurance Training Adapted, by permission, from Donna H. Korzick, Pennsylvania State University, 2006. Muscle Adaptations to Anaerobic Training • • Increased muscle fiber recruitment Increased cross-sectional area of type IIa and type IIx muscle fibers Energy System Adaptations to Anaerobic Training • • Increased ATP-PCr system enzyme activity Increased activity of several key glycolytic enzymes 63 • No effect on oxidative enzyme activit Changes in Creatine Kinase (CK) and Myokinase (MK) Activities With Anaerobic Training Performance in a 60 s Sprint Bout After Anaerobic Training Anaerobic Training Key Points 64 • • Anaerobic training bouts improve both anaerobic power and anaerobic capacity Increased performance with anaerobic training is attributed to strength gains • Increases ATP-PCr and glycolytic enzymes Specificity of Training and Cross-Training • • • To maximize cardiorespiratory gains from training, the training should be specific to the type of activity that the athlete usually performs Cross-training is training for more than one sport at a time Gains in muscular strength and power are less when strength training is combined with endurance trainin THERMOREGULATION 65 Definition Thermoregulation refers to the mechanisms and control systems used by the body to balance thermal inputs and thermal losses so as to maintain its core temperature nearly constant. Description In a healthy individual, the temperature of the core of the body is regulated by feedback control mechanisms that maintain it nearly constant around 98.6°F (37°C) throughout the day, week, month or year. This thermoregulation is efficiently coordinated by the central nervous system (CNS) as long as the temperature of the surroundings ranges between 68°F (20°C) and 130°F (54°C). The body increases and lowers its core temperature using a temperature control system that works like a thermostat. Increased body temperature activates mechanisms promoting heat loss, and lowered body temperature activates mechanisms enabling the accumulation or production of heat. Such a system is called a feedback control system, because it uses as input the total or partial output of the system, meaning that the consequences of the process dictate how it will go on further. A feedback system has three components: sensors that register the change, a control center that receives the signals of the sensors, and an effector mechanism, meaning a pathway for the commands of the control center when it responds to the information received from the sensors. In thermoregulation, the control center is located in the hypothalamus, a tiny cluster of brain cells located in the brain just above the pituitary gland. It also contains the key temperature sensors. Other sensors, located all over the body, record whether the body temperature is too high or too low. There are three main effector mechanisms involved in thermoregulation. The first is the vaso-motor system, which consists of the nerves that act on vascular smooth muscle to control blood vessel diameter; the second is provided by metabolic effectors, which are substances produced by the body to increase its activity. The third main effector mechanism is provided by the sweat glands. The vasomotor system is responsible for two physiological responses called vasodilation and vasoconstriction. The first increases blood flow in the tissues and the second decreases it. Heat production, also called thermogenesis, is the result of several different body functions. One of them is the action of the thyroid gland, located in the neck. Hormones released by this gland increase the body's metabolism, meaning the activity of the body. Increased production of heat is thus achieved by increasing the metabolic processes in which energy is released in the form of heat. Other producers of heat are the skeletal muscles, the liver, the internal organs, and the brain. Muscles play a major role in thermogenesis. Because of their weight, they are able to produce very large amounts of heat very rapidly during increased physical activity. Digestion also results in an increased production of heat. Heat is lost from the body in four different ways: by conduction, convection, evaporation, and radiation. Heat loss by conduction occurs because there is a gradient between the body temperature and the temperature of the surrounding environment. When the external temperature is lower, heat flows from the body to the colder external 66 environment. The body also loses heat by evaporation, mainly through sweating. This mechanism occurs especially during phases of increased heat production, for example during physical exercise. The sweat glands are controlled by cholinergic impulses through the sympathetic nerve fibers. During intensive sweating, up to one liter of sweat may be formed. When the humidity of the environment is higher, heat loss through sweating is easier. When the body needs to accumulate heat, adrenergic impulses restrict the blood flow through the skin, with the result that the skin becomes an insulator, thus decreasing heat loss to a minimum. The body can also lose heat by convection, through the circulatory system. With this mechanism, heat flows from each cell to the surrounding extracellular fluid (ECF) and afterwards to the circulating blood. Heat loss is modulated by the amount of blood that circulates through the body surface. The high flow occurring through the sub-cutaneous area and the skin transfers the heat carried by the blood to the environment through the body surface. Finally, the body can lose heat by simply radiating it away. Several conditions can influence body temperature, such as exercise, the time of day, the environmental temperature, digestion and the level of water consumption. For example, body temperature varies in the narrow range between 36.5°C and 37.5°C. It slightly increases during the day, reaching a peak between 6:00 to 10:00 p.m. and a low between 2:00 and 4:00 a.m. This diurnal variation depends on the body activity throughout the day. Diurnal variations do not change in persons that work at night and sleep during the day and they also occur when fever is present. Fever reaches a peak in the evening, and decreases during the night so that, in the morning, even a very sick person may have an almost normal temperature. Body temperature changes are also more intensive in young people than in older people. Physical activity also increases body temperature, in some cases very significantly. For example, the average body temperature of marathon runners may increase to 39–41°C. The feedback control system responsible for thermoregulation is very complex, but overall, it can be summarized as follows: When the surroundings are hot or when the body is vigorously exercising: • • • • • • • • • • • • The body core temperature starts to rise. This increase in temperature is detected by heat sensors in the body. These sensors send signals to the CNS. The CNS stimulates the sweat glands. This increases the production of sweat. And this activates the evaporation of sweat. Which promotes heat loss by evaporation. The CNS also signals the vasomotor system to dilate the capillaries underlying the skin. Vasodilation occurs and the capillaries become larger. More blood flows underneath the skin surface. Which promotes heat loss by conduction, radiation, and convection. The body core temperature returns to normal. When the surroundings are cold or when the body is resting: • • The body core temperature starts to drop. This is detected by cold sensors in the body. 67 • • • • • • • • • • These sensors send signals to the CNS. The CNS slows down the activity of the sweat glands. This lowers the production of sweat. And it decreases the evaporation of sweat. Which reduces heat loss by evaporation. The CNS also signals the vasomotor system to constrict the capillaries underlying the skin. Vasoconstriction occurs and the capillaries become narrower. Less blood flows underneath the skin surface. This reduces heat loss by conduction, radiation, and convection. The body core temperature returns to normal Function The major function of thermoregulation is to help maintain homeostasis, meaning the stability of the body's internal environment. A wide variety of body systems and organs interact to maintain the body's internal environment (the immediate surroundings of cells) constant in response to changes that occur either in the conditions of the external environment or in the conditions of the internal body environment. Thermoregulation is one of these essential homeostatic mechanisms. Role in human health Thermoregulation is of the utmost importance in maintaining health, because human life is only compatible with a narrow range of temperatures. Core temperature changes of the order of 3°C will not interfere with physiological functions, but any variation outside that range has very serious effects. For example, at 28°C, the muscles can no longer respond, at 30°C, confusion occurs and the body can no longer control its temperature, at 33°C, loss of consciousness occurs, at 42°C, the CNS breaks down with irreversible brain damage, and at 44°C, death occurs, the result of the body proteins starting to denature. Common diseases and disorders • Fever—Increase in body core temperature. Fever is not an illness but a natural reaction to a number of illnesses. • Hyperthermia—Overheating of the body caused only by an external factor, as for example a hot environment, or a hot bath. • Hypothermia—A low body temperature, as caused by exposure to cold weather or a state of low temperature of the body induced by decreased metabolism. • Hypothyroidism—Hypothyroidism refers to a condition in which the amount of thyroid hormones in the body is below normal. Since the thyroid hormones are important in thermoregulation, hypothyroidism affects the body's capacity to control temperature. 68 KEY TERMS Acetylcholine — Neurotransmitter produced by an enzyme in the body that stimulates muscle tissue. Adrenaline — A hormone produced by the adrenal medulla that causes vasodilation of the small arteries in muscle and increases cardiac output. Adrenergic — Substance that has an effect similar to that of adrenaline. Antagonist — A substance that cancels or counteracts the action of another. Capillaries — The smallest vessels of the body. Central nervous system (CNS) — One of two major divisions of the nervous system. The CNS consists of the brain, the cranial nerves and the spinal cord. Cholinergic — Substance that has an effect similar to that of acetylcholine. Conduction — Heat transfer by means of molecular agitation within a material without any motion of the material as a whole. If one end of a metal piece is at a higher temperature, then heat will be transferred down the piece toward the colder end. Convection — Heat transfer by motion of a fluid when the heated fluid is caused to move away from the source of heat, carrying energy with it. Dermis — Layer of connective tissue underlying the skin. Contains smooth muscle tissue, nervous tissue and blood vessels. Endocrine glands — Glands that secrete substances which are released directly into the bloodstream and that regulate metabolism and other body functions. Endocrine system — The system of glands in the body that secrete their hormones directly into the circulatory system. Enzyme — A type of protein produced by the body that speeds up chemical reactions. Some enzymes regulate certain functions due to their ability to change their activity by modifying their structure. 69 Extracellular fluid (ECF) — The fluid found outside of the cells and between the cells in body tissues. Feedback system — A feedback system uses as input the total or partial output of the system. Feedback systems are used to control and regulate processes. They use the consequences of the process (for example, too much or too little produced) to regulate the rate at which the process occurs (decrease or increase the rate of the process). Homeostasis — Stability of the body's internal environment, achieved by a system of integrated control systems activated by feedback systems. Homeostasis is thus the maintenance of a constant internal environment (the immediate surroundings of cells) in response to changes occurring in the conditions of the external environment and the conditions of the internal body environment. Hormone — A naturally occurring substance secreted by specialized cells that affects the metabolism or behavior of other cells possessing receptors for the hormone. Hypothalamus — The hypothalamus is a tiny cluster of brain cells just above the pituitary gland, that is involved in the regulation of body temperature. Metabolic effectors — Substances, such as hormones, that can increase the metabolism of the body or of a target organ. Metabolism — The sum of all the physical and biochemical processes occurring in the body to produce what is required to maintain life. This includes the transformation of nutrients into energy and the use of energy by the body. Nervous system — The entire system of nerve tissue in the body. It includes the brain, the brainstem, the spinal cord, the nerves and the ganglia and is divided into the peripheral nervous system (PNS) and the central nervous system (CNS). Peripheral nervous system (PNS) — One of the two major divisions of the nervous system. The PNS consists of the somatic nervous system (SNS), that controls voluntary activities and of the autonomic nervous system (ANS), that controls regulatory activities. The ANS is further divided into sympathetic and parasympathetic systems. Radiation — Heat transfer that occurs by the emission of electromagnetic waves which carry energy away from the emitting object. Thermogenesis — Production of heat. 70 Thermoregulation — Regulation of body temperature so as to maintain it nearly constant at 98.6°F (37°C). Thyroid gland — A butterfly-shaped endocrine gland located in the neck on both sides of the windpipe. It controls the rate at which the body produces energy from nutrients. It secretes the hormones triiodothyronine (T3) and thyroxine (T4) which increase the rate of metabolism and cardiac output. Vasoconstriction — The decrease in the internal diameter of a blood vessel resulting from tightening the smooth muscle located in the walls of the vessel. Vasoconstriction decreases the blood flow. Vasodilation — The increase in the internal diameter of a blood vessel resulting from relaxation of the smooth muscle located in the walls of the vessel. Vasodilation increases the blood flow. Vasomotor system — The neural systems which act on vascular smooth muscle to control blood vessel diameter. BODY TEMPERATURE REGULATION Since you are a warm-blooded animal, your body attempts to keep its internal temperature constant. Human life is only compatible with a narrow range of temperatures: Temperature (C) Symptoms 28 muscle failure 30 loss of body temp. control 33 loss of consciousness 37 normal 42 central nervous system breakdown 44 death* ( by irreversible protein "denaturation", or unfolding; once their shape changes, they cease to function properly.) As we will see in the next section, you are constantly generating heat, and so your body must take active steps to lose that heat. The following table illustrates the power cost of various common activities: Activity Energy Cost (Cal/m 2 hr) sleeping 35 sitting 50 working at a desk 60 71 standing 85 washing & dressing 100 walking (3 mph) 140 bicycling 250 swimming 350 running 600 Approximately 80 % of these costs is waste heat. The other side of this coin is cold weather: your body must then work to stay warm. The mechanisms which either are used by your body or affect its function are "conduction", "convection", "radiation" and "evaporation". Conduction is the flow of heat energy from regions of warmer temperature to regions of cooler temperature. Acclimation to Cold Nonacclimated Early vasoconstriction Late vasodilation Acclimation Early onset of cold induced vasodilation Low peripheral temperature Low peripheral temperature Shivering (increase BMR 2-3X) Nonshivering thermogenesis Inadequate delivery of heat to periphery Adequate periphery delivery of heat to the Factors Affecting Thermal Acclimation Age Both infants and elderly have lessened ability to acclimatize to heat or cold Body size and shape. The surface area to weight ratio will affect the level of acclimatization attainable Body composition Subcutaneous adipose deposits insulate the core and make it more difficult to dissipate heat in hot or easier to retain heat in the cold Cold Stress The body attempts to increase and conserve body heat by rerouting circulation and shivering Vasoconstriction causes the blood to pool internally to conserve organ heat 72 Shivering causes the temperature to increase due to muscular activity Individuals respond to cold stress by increasing muscular activity, wearing more clothes, or heating their living space Adapting to Climate Extremes Humans and many other mammals have unusually efficient internal temperature regulating systems that automatically maintain stable core body temperatures in cold winters and warm summers. In addition, people have developed cultural patterns and technologies that help them adjust to extremes of temperature and humidity. In very cold climates, there is a constant danger of developing hypothermia, which is a life threatening drop in core body temperature to subnormal levels. The normal temperature for humans is about 98.6 ° F. (37.0 ° C.). Hypothermia begins to occur when the core body temperature drops to 94° F. (34.4° C.). Below 85° F. (29.4°C.), the body cools more rapidly because its natural temperature regulating system (in the hypothalamus) usually fails. The now rapid decline in core body temperature is likely to result in death. However, there have been rare cases in which people have been revived after their temperatures had dropped to 57-60° F. (13.9-15.6° C.) and they had stopped breathing. In extremely hot climates or as a result of uncontrollable infections, core body temperatures can rise to equally fatal levels. This is hyperthermia. Life threatening hyperthermia typically starts in humans when their temperatures rise to 105-107° F. 73 (40.6-41.7° C.). Only a few days at this extraordinarily high temperature level is likely to result in the deterioration of internal organs and death. Body size and shape are significant factors in how efficiently an individual responds physiologically to cold and hot climates. Two 19th century naturalists, Carl Bergmann and Joel Allen, formulated rules concerning these factors. Bergmann's Rule In 1847, the German biologist Carl Bergmann observed that within the same species of warm-blooded animals, populations having less massive individuals are more often found in warm climates near the equator, while those with greater bulk, or mass, are found further from the equator in colder regions. This is due to the fact that big animals generally have larger body masses which result in more heat being produced. The greater amount of heat results from there being more cells. A normal by-product of metabolism in cells is heat production. Subsequently, the more cells an animal has, the more internal heat it will produce. In addition, larger animals usually have a smaller surface area relative to their body mass and, therefore, are comparatively inefficient at radiating their body heat off into the surrounding environment. The relationship between surface area and volume of objects was described in the 1630's by Galileo. It can be demonstrated with the cube shaped boxes shown below. Note that the volume increases twice as fast as the surface area. This is the reason that rrelatively less surface area results in relatively less heat being lost from animals. Polar bears are a good example of this phenomenon. They have large, compact bodies with relatively small surface areas from which they can lose their internally produced heat. This is an important asset in cold climates. In addition, they have heavy fur and fat insulation that help retain body heat. Allen's Rule In 1877, the American biologist Joel Allen went further than Bergmann in observing that the length of arms, legs, and other appendages also has an effect on the amount of heat lost to the surrounding environment. He noted that among warm-blooded animals, individuals in populations of the same species living in warm climates near the equator tend to have longer limbs than do populations living further away from the equator in colder environments. This is due to the fact that a body with relatively long appendages is less compact and subsequently has more surface area. The greater the surface area, the faster body heat will be lost to the environment. This same phenomenon can be observed among humans. Members of the Masai tribe of East Africa are normally tall and have slender bodies with long limbs that assist in the loss of body heat. This is an optimal body shape in the hot tropical parts of the world but would be at a disadvantage in subarctic regions. In such extremely cold environments, a stocky body with short appendages would be more efficient at maintaining body heat because it would have relatively less surface area compared to body mass. 74 We lose heat to the surrounding environment in several ways, as shown in the illustration above on the right. However, simple radiation is the process that is responsible for most of the loss, except in hot dry climates where evaporative cooling, or sweating, can be more significant. Cold Climate Responses Many people living in freezing climates drink alcohol to warm themselves. This increases blood flow to the body extremities, thereby providing a feeling of warmth. However, it results only in a temporary warming and can speed up the loss of heat from the vital internal organs, resulting in more rapid death from hypothermia. A much more effective cultural response to extremely cold temperatures is the use of insulating clothing, houses, and fires. People all over the world also adapt by limiting outdoor activities to warmer times of the day. In some societies, sleeping in family groups with bodies pushed up against each other is also done in order to minimize heat loss during the cold months of the year. When the environment is very cold, life can depend on the ability of our bodies to reduce heat loss and to increase internal heat production. As Bergmann and Allen observed, the human physiological response to cold commonly includes the evolution of more massive, compact bodies with relatively less surface area. Shivering can also cause a short-term warming effect. The increased muscle activity in shivering results in some heat production. There are three additional important types of biological responses to cold conditions found among humans around the world: 1. increased basal metabolic rate 2. fat insulation of vital organs 3. change in blood flow patterns Different populations usually develop at least one of these important adaptive responses to consistently cold conditions. People living in harsh subarctic regions, such as the Inuit (Eskimo) of the far northern regions of the western hemisphere and the Indians of Tierra del Fuego at the southern end, traditionally consumed large quantities of high calorie fatty foods. This significantly increases the basal metabolic rate, which, in turn, results in the production of extra body heat. These peoples also wore heavy clothing, often slept in a huddle with their bodies next to each other, and remained active when outdoors. 75 The Ju/'hoansi of Southwestern Africa and the Aborigines of Australia usually respond physiologically to the cold in a different way. Thick fat insulation develops around the vital organs of the chest and abdomen. In addition, their skin cools due to vasoconstriction at night. As a result, heat loss is reduced and the core body temperature remains at normal levels. However, the skin feels very cold. This response would not be adaptive if the Kung and the Aborigines lived in consistently freezing environments because the concentration of body heat in their torsos would allow the loss of fingers, toes, and other appendages from frostbite. Their physiological adaptation is to environments that rarely stay below freezing long and that do not have abundant high calorie fatty foods. Hot Climate Responses Adapting to hot environments is as complex as adapting to cold ones. However, cold adaptation is usually more difficult physiologically for humans since we are not subarctic animals by nature. We do not grow dense fur coats nor do we usually have thick layers of fat insulation like polar bears. The effect of heat on our bodies varies with the relative humidity of the air. High temperatures with high humidity makes it harder to lose excess body heat. This is due to the fact that when the moisture content of air goes up, it becomes increasingly more difficult for sweat to evaporate. The sweat stays on our skin and we feel clammy. As a result, we do not get the cooling effect of rapid evaporation. In dry hot weather, humidity is low and sweat evaporates readily. As a result, we usually feel reasonably comfortable in deserts at temperatures that are unbearable in tropical rain forests. The higher the desert temperatures, the more significant of a cooling effect we get from evaporation. This relationship between relative humidity and air temperature is quantified below. When the apparent temperature is in the light yellow range, heat exhaustion and cramps are likely for humans. In the bright yellow range, life threatening heat stroke is likely. While evaporative cooling is very effective in dry climates, there is a major drawback. That is the rapid loss of water and salts from the body through sweat. This can be fatal in less than a day if they are not replaced. It is common to lose a quart or more of water through sweating each hour in harsh summer desert conditions. Commercial "sport drinks" are designed to help people in these situations rehydrate and replenish lost mineral salts. It is easy and inexpensive to create your own equivalent drink without the unnecessary food coloring and sugar that the commercial drinks often include to make them more appealing to customers. Most people have the ability to physiologically acclimatize to hot conditions over a period of days to weeks. The salt concentration of sweat progressively decreases while the volume of sweat increases. Urine volume also reduces. In addition, vasodilation of peripheral blood vessels results in increased heat loss through radiation. Vasodilation also causes flushing, or reddening, of the skin since more blood is close to the surface. 76 NOTE: Sweating is not only a mechanism for getting rid of excess body heat. Our sweat contains a number of different substances, including pheromones that can have powerful affects on the hormone systems of others who are physically close to us. Researchers at the Monell Chemical Senses Center in Philadelphia have shown that pheromones in the sweat of men can cause an increase in the amount of luteinizing hormones released from a woman's pituitary gland at the base of her brain. This in turn can shorten the time until the next ovulation. Subsequently, human male pheromones are now being considered as potential future fertility drugs for women. Pheromones released by sisters and other women living together can cause a synchronization of their menstrual cycles. It is likely that human males also respond subconsciously to female pheromones in a way that affects their reproductive systems. PRINCIPLES OF EXERCISE In developing an effective physical fitness program, you must adhere to basic exercise principles, regardless of your fitness level. These principles can best be remembered by the acronym "PROVRBS." • • • • • • • PROGRESSION - The intensity and duration of exercise must gradually increase to improve the level of fitness. REGULARITY - A regular fitness program requires exercising the four components of fitness at least 3 times a week. The four components are: cardiorespiratory endurance, muscular strength, muscular endurance, and flexibility. OVERLOAD - In order to obtain a training effect, the work load of each exercise session must exceed normal demands placed on the body. Find your one rep max lift for each exercise, then set the amount of weight used during each exercise at a level that will cause muscle failure with 8-10 repetitions. VARIETY - Variety is the key to a lasting program because it relieves boredom and increases motivation and progress. Your muscles' "memory cells" will stop growing if you don't shock them occasionally with a change in your routine. RECOVERY - Alternating muscle groups every other day, or alternating hard and easy days for each component of fitness, allows muscle repair and growth. Recovery can help avoid burn-out and injury. BALANCE - Overemphasizing one component of fitness inhibits your overall progress. Include all four of the components on a regular basis to achieve proper balance. SPECIFICITY - Plan your training towards your specific goals. For example, increase your 2 mile run time using specific cardiorespiratory activities such as interval training “We cannot prepare the future for our youth but we can certainly prepare our youth for the future” 77 “In a day , when you don’t come across any problema, you can be sure that you are travelling in a wrong path” UNIT 4 SPORT BIOMECHANIC 78 Common Technique Analysis Approach In biomechanics of sports, the two most common technique analysis approaches are the qualitative and quantitative methods. 1. Qualitative Analysis From a sports biomechanics perspective • to identify and correct faults in skill execution using a minimum of measurements = Qualitative Video Analysis This method is a systematic watching and thoughtful judgment of the quality of human movement so as to provide the most proper intervention to pick up sports performance. To successfully analyze a movement, the very first step is to formulate one or more questions regarding the movement. The following general questions might be included: 1. Is the movement being performed through a suitable range of motion (ROM)? 2. Is the movement being performed with enough force? 3. Is the sequencing of body movements suitable for completing of the skill? 79 4. Why is the javelin thrower not getting better distance? Besides, more definite questions might take account of these: 1. Is release of the handball taking place at the instant of full elbow extension? 2. Is there hyper trunk extension taking place during the execution of the shot? Once one or more questions have been recognized, the following step in analyzing human movement is to collect data. The most commonly data collected by teachers and coaches is qualitative visual or ocular observation data. In order to acquire the best observational data, it is practically to plan ahead as to the optimal distance (s) and viewpoint (s) from which to make the comments. Breaking down a whole motion of performing a particular skill into phases will provide the teachers or coaches with a more logical frame by frame study. 2. Quantitative Analysis • Describing and explaining performance skills using measurement systems in biomechanics = Quantitative Video Analysis The advancement of technology resulted in the ability to record, display and evaluates dynamic movements both kinematically and kinetically. Quantitative biomechanical analysis methods employ a wide range of data collection instruments to observe, capture and evaluate athletes’ performance. These instruments include high-speed cameras, force platforms, electromyography (EMG) and electro-goniometers. High-speed cameras offer teachers, coaches and sports biomechanists especially with the capability to capture and record complex movements sequence. Once the sequence of motion is captured, the location of the body markers of the athlete are eventually converted into coordinates using a digitiser. During digitizing, kinematic data such as displacements, velocities and accelerations of the recorded motion are obtained. Force platforms or force plate are examples of dynamometers normally used nowadays to measure the ground reaction forces (GRF). The electrical energy collected in the strain gauge, the transducers in the force plate will then transfer kinetic energy into electrical energy. This electrical energy is then recorded in an analogous form of force (Newton). Electromyography provides information on athletes’ muscular activities by recording changes in the electrical potential of a muscle during contracting or relaxing. These signals will record indications of the electrical activity of a particular muscle. Electro-goniometer provides instantaneous and reliable way of obtaining kinematic data on joint angular movements. The data obtained will eventually provide a good insight of angular movement characteristics and flexibility of joint segments before any further diagnosis, rehabilitation or exercise prescription being made. Qualitative Video Analysis of sports skill: 80 1. SILICOCOACH Pro - videoing Introduction Silicon COACH Pro software is designed for teachers, coaches, sports scientist or biomechanist to provide meaningful feedback for their athletes or subjects. Capture a video with a well planning procedure (Figure 1). Build Module Capture Module View Module Figure 1 : A well planning procedure Videoing Procedure: 1. A chalkboard or piece of paper with the name of the new person should be displayed in front of the camera. 2. A proper number of fingers to indicate the trial number if the movements are recorded repeatedly. 3. Determine and plan the best angle of a movement to be capture. 4. The plane of any movement will need to be perpendicular to the camera. 5. Lighting should be shown from behind the camera side towards the event. 6. A one meter scaling rod need to be put in the field of view. Once the scaling rod has been videotape, you cannot adjust the zoom or focus on the camera. 7. The camera should be place at a distance from the subject. The image size should be as large as possible. 8. Use the manual focus to avoid the camera focusing on an unwanted object in the background or foreground as the subject moves. 9. Use a high shutter speed to capture a clear image 10. As the shutter speed increases, less light is allowed to reach the videotape, causing the image to turn dark. 81 11. Spot lights is required to achieve the necessary lighting levels to video indoors with a high speed shutter. 12. Record at least 2 minutes of videotape prior to videotaping any activity that you want to analyze. When taping be sure to record plenty of tape prior to and after the period of interest. Capturing and editing procedure Equipments: 1. Digital Video Camera 2. Silicon COACH Pro software 3. Computer Procedures : 1. Use the ‘folder list’ to specify the folder where to save the file 2. Select the folder into which to capture the movie. 3. Locate video footage that intended to capture on the video source. 4. Select the ‘CAPTURE ‘ tag. Use the controls to operate the camera. 5. Click the ‘START’ button. Be aware there may be a 1-2 second delay for the system to start. 6. Once completed capturing, click the STOP button to stop the capturing process. ‘Esc’ key can be used for the same purpose. 7. You can trim down the unwanted video clips. 8. The movie name will now appear in the File list. The movie can be viewed by double clicking on it in the File list or select PLAY after a Right Mouse Click. Compilation Procedure Part 1: Building the presentation 1. In the Presentation Builder screen click on the Template button. A list of templates will appear. 2. Double click on the ‘Short – 2’ template to load the template into the presentation Grid. 82 Note: how the movies in the Movie Column are called View 1 and View 2. (Click expand all at the top of the presentation area to see video file place holders). 3. The first series of screen set-ups in each of these templates are called Single Play (Double click the green icons to access these options) and the lower series of screen set-ups are under Single Manual or Dual Manual control. 4. If you replace View 1 with a movie called XXX avi the full path to the movie appears in the Presentation area only when you roll your mouse over the video icon, e.g. C:\silicon COACH\Demos\Dive\XXX,avi. 5. To change the movies from the defaut ‘View 1’, and ‘View 2’ place-holders, drag your new movie over the first occurrence of the one you want to replace (e.g. ‘View 1’) Your new movie will replace all occurrences of the ‘View 1’ place-holder. 6. to create own templates. Click on the ‘Screen Set-up’ button. Drag the set-up you desire onto the presentation area. The new set-up will always be added to the end of the list. Part 2: Using the screen tools 1. Capture a video All of our products include integrated video capture for analog and digital video. This means you can use siliconCOACH to capture through standard video capture cards, or Firewire cards (IEEE 1394) that support Direct X 8 or later (see Hardware Requirements). The video capture interface allows you to capture Analog or Digital Video and save it as a movie file on your computer. The movies can be "trimmed" to remove unwanted footage or compressed to speed up transmission over the Internet. The interface is intuitive yet powerful enough to give you the flexibility you need to deal with different formats and hardware specifications. 83 2. Drawing Buttons The following table illustrates the drawing and measurement tools that are available. Icon Button Name Click this to... Straight line tool Draw a straight line Arrowed line tool Draw an arrowed line Freehand tool Draw a non-linear line Curved line tool Draw a curved line Horizontal line tool Draw a horizontal line Vertical line tool Draw a vertical line Point marker tool Track a point of interest Oval tool Use the oval shape to enclose an area of interest Rectangle tool Use the rectangle shape to enclose a area of interest Grid tool Add a grid over a person to get reference points Normal angle tool Calculates an angle between any three points Vertical angle tool Measure the angle relative to a vertical line Horizontal angle tool Measure the angle relative to a horizontal line Set Scale Set the scale 84 Discrete Measurement Calculate a distance between any two points Continuous Measurement Determine the change in distance of an object across a number of frames 3. Build a presentation Silicon COACH uses a unique presentation builder which uses template designs to dramatically speed up the process between video capture and analysis. To create a presentation, open a template and simply drag the movies into the placeholders. A presentation template is simply a presentation with predefined screen set-ups that you can drop movies into. As you become more proficient and discover your own presentation needs, you can develop your own presentation templates. For even more speed and ease of use you can use the 'Quick Present and Play’ feature. After you finish capturing your video, the software automatically loads that captured video into a Presentation and starts playing it for you, giving you and your athlete or client feedback in a matter of seconds. 4. Customize screen setups The screen setups are the building blocks of a presentation. The characteristics of a screen setup can be changed simply be clicking on it and selecting a new option. Two movies can be overlaid to highlight differences in technique. The overlaid movie can be scaled and moved to achieve the best alignment. To speed up the assembly of a presentation, you can select a screen set-up that will automatically pair the movies you wish to use. You can display one, two or four movies on the screen at the same time. You can also display the movies in the two screen setup-ups in a way that best suits the movement you are analyzing. In all cases, the movies are scaled in such a way that the original aspect ratio is maintained. This means that the images aren't distorted and that an accurate analysis can be conducted. Further 85 more, all the movies can be synchronized to a common event (for example ball strike or ground contact), so that the videos will play through that key point in time together. Number Two Screen Description of Movies Orientation Only one movie is visible. The frame height and width of the movie is scaled so that each frame is completely visible. 1 2 2 Sample Screen (click for larger image) None Vertical The two movies will be shown side by side and the frame height and width of each movie is scaled so that each frame is completely visible. The two movies will be shown side by side but only the central portion of the movie will be visible. The movie is at full height to allow you to get a larger view of an activity that is tall but not very wide. 86 2 Horizontal 2 Overlay The two movies will be shown one above the other but only the central portion of the movie will be visible. The movie is at full width to allow you to get a larger view of an activity that is wide but not very tall. The two movies are shown with one on top of the other. The amount of transparency can be altered to highlight specific points The four movies will be shown side by side and the frame height and width of each movie is scaled so that each frame is completely visible. 4 5. Split fields (50 or 60 Hz for PAL/NTSC) One of the major advantages of silicon COACH Pro is its ability to extract 50 PAL/60 NTSC images per second (Hz), out of original digital video. This is essential to accurately analyse fast or complex movements. The images below highlight this feature. In the first series of images at 50Hz the impact of the ball on the racquet is evident in the forth image, however, in the 25Hz footage this key point is not clear. At 50 Hz Pal or 60 Hz NTSC (click for larger image) At 25 Hz Pal or 30 Hz NTSC (click for larger image) 87 6. Watch the presentation Once you have created your presentation you can then watch it in the Presentation viewer. Here you will also find a large selection of control, drawing and measurement tools. (click for larger image) 7. Flip images Movies can be flipped horizontally, which is useful when comparing left and righthanded athletes, or when assessing their general symmetry. In the two-screen example below the right hand movie in the second image has been flipped so that a comparison between the technique of the left and right limbs can be performed. 88 (click for larger image) (click for larger image) 8. Use drawing and measurement tools A full range of tools are available to enhance your analysis of a person’s technique. These tools allow you to draw over a movie to highlight points of interest and measure key variables such as distances, speeds and angles, including angles from a vertical or horizontal reference line. Your analysis can be saved as a movie file as you go. It can then be played back, saved to disk, CD, or sent over the Internet. The saved file incorporates the movie with your drawings, measurements and any verbal comments you add using your microphone. 89 9. Zoom tool silicon COACH Pro has a zoom tool. This tool displays a small window that zooms in on the portion of the screen where you have positioned the cursor. There are a number of zoom levels available. The zoom window can also be stretched and repositioned. 10. Blend function The blend tool allows you to select a reference image and then advance the movie so that each frame is blended with the reference image. Now you can visualize two frames from the SAME movie at the same time. This helps you assess how much a person has moved from the position they were in when you initially turned the Blend option on. 90 11. Overlay images A movie can be overlaid on top of another to highlight differences in technique. The overlaid movie can be scaled and moved to achieve the best alignment. Also the transparency of each image can be changed while you are watching it to highlight the different points you want to make. 91 12. Save images as .jpg file Any image you have on screen in silicon COACH can be saved as a .jpg file. This includes all drawings and text. These images are ideal for preparing reports or assignments. 92 13. Export Presentation to video or CD SiliconCOACH Pro and siliconCOACH Pro Server Edition are designed to create CD presentations, so your athlete or client can take home a personalized copy of your analysis. The analysis includes all of the drawings and measurements that you make, and you can use a microphone to record your verbal comments as well. The Package Wizard in the software simply packages all the files, including the free siliconCOACH Viewer, into one folder ready to burn to CD. Not all of your clients will have siliconCOACH software on their computer. If you have made a presentation for them in siliconCOACH Pro or siliconCOACH Pro Server Edition they can watch it on any Windows computer using the free siliconCOACH Viewer. 14. Graphing Function If you have tracked positional changes of a point over time, the latest version of siliconCOACH automatically creates a graph of distance and speed. For example, if you use the continuous measurement tool to track the position of the bar during a squat action, you can press on the graphing button to automatically display the distance traveled and speed of the bar. The cursor is synchronized with the video in the background to visually show you what is happening at that point on the graph. For even further analysis, you can export all your data into a comma-separatedvalues file to be opened in other analysis software such as Microsoft Excel. 93 15. Using the Technique Wizards with report PAC Technology After eight years of developing sports analysis software we have realized that we can not only give our clients great analysis tools, but we can also provide knowledge on how to perform an analysis. To facilitate the transfer of knowledge between different groups that are interested in movement analysis, report PAC Technology was developed. Report PAC Technology revolutionizes movement analysis because it provides a mechanism for disseminating knowledge. To do this, reportPAC Technology creates a report by combining the data collected in siliconCOACH Pro, siliconCOACH Pro Server Edition, or siliconCOACH Student using Technique Wizards as a guide. reportPAC Technology then saves this report to your local computer or allows it to be uploaded to a web based database called siliconCOACH Central, by connecting through the World Wide Web. reportPAC Technology is not a stand alone piece of software. You must have siliconCOACH Pro, siliconCOACH Pro Server Edition, or siliconCOACH Student to use reportPAC Technology. This image shows a Technique Wizard made for squatting that guides the user through making a report. 94 This image shows an automatically generated completed report for a tennis serve, as viewed in a web browser. Part 3: Creating a Simple Presentation 1. Build a presentation with 1,2 or 4 screen views - use the ‘ templates’ - use the ‘ screen setups’ 95 2. 3. 4. 5. Use PLAY, STEP, or MANUAL, controlled playback. Flip the movie. Synchronise two movies for playback. When using MANUAL playback, please use : • All the drawing tools • All the erasers • Measure joint angles • Measure angles relative to the horizontal/vertical • Set the scale and measure distance and speed • Create graphs • Make movies of your presentations. ‘” When a person feels that they got what they deserve because that’s what they earned - that’s Pride “ “ I will not say I failed 1,000 times , I will say that I discovered 1,000 ways that can cause failure “ 96 UNIT 5 TRAINING AND FITNESS APPLICATION OF PERIODIZATION IN SPORTS 97 PERIODIZATION REVISIT Per iodization can be defined as planned distribution or variation in training methods and means on a cyclic or periodic basis (Plisk S.S., 2003). The basic goals are to exploit complementary training effects at optimal times, manage fatigue, and prevent stagnation or overtraining. Each individual training cycle is characterized by periodical adjustments in the objectives, tasks, and content with the ultimate objective being to assist the athletes in reaching a peak level of performance for the main competition(s) of the year (Cissik J., 2008). Generally there are three (3) common per iodization models which include “Classic” linear, non-linear or undulating and reverse linear. A. “Classic” Linear Divides a long term training period called macrocycle into smaller phases called mesocycle, which are also subdivided into weekly microcycle. It is characterized by high initial training volume and low intensity. As training progress, volume decreases and intensity increases in order to maximize strength, power or both. In this model the training phase is designed to emphasized a particular physiological adaptation (e.g., hypertrophy, maximal strength etc). B. Non-linear or undulating Enables variation in intensity and volume within each 7 to 10 day cycle by rotating different protocol over the course of the training program (E.g., Monday – strength, Wednesday – muscular endurance, Friday – hypertrophy). This model requires less organization and planning. Kraemer et al. (2000) and Marx et al (2001) demonstrate undulating periodization are just effective as linear periodization for the development of strength, power and muscle mass and are more effective than non-periodized program. C. Reverse Linear This model is considered as a linear periodization in reverse. The goals of this model is to maximize muscle hypertrophy or endurance. It starts with the power phase (high intensity: 2-3 reps/set; low volume: 3 sets/exercise) first. Rhea et al., (2003) demonstrate reverse linear periodization model is more effective for increasing muscular endurance than linear periodization model. The authors concluded that gradual increases in volume and decreases in intensity may result in greater gains in muscular endurance. LINEAR PERIODIZATION MODEL FOR SPORT SPECIFIC Periodization Model for Endurance Sports Sample : Long-distance and Marathon Running High aerobic capacity is the essential physical attribute of distance runners. Equally important is the ability to maintain a steady pace so that the runner efficiently taxes the energy stores, where glycogen and free fatty acids are the fuels used to produce energy 98 for the race. Fast pace at the finish is dependent on an athlete’s capacity to produce energy anaerobically. • • • • • Dominant energy system : aerobic. Ergogenesis: o 10K: 5% alactic; 15% lactic acid; 80% aerobic. o Marathon: 5% lactic acid; 95% aerobic. Energy suppliers: glycogen; free fatty acids. Limiting factor: requires muscular endurance of long duration. Training objectives: muscular endurance; power endurance; maximum strength. Dates Oct Nov Periodization Periodization of strength Dec Jan Feb Mar Apr Preparatory Anatomical Adaptation Periodization of energy systems MxS Aerobic (O2) M-EM Mxs Conv. To M-EL Aerobic (O2) Lactic acid May Jun Jul Competition Maintain: Power, muscleendurance Aerobic (O2) Lactic acid Aug Sep Transition O2 Play MxS = Maximum strength (<80%) M-EM = Muscle-endurance of medium duration. M-EL = Muscle-endurance of long duration. Periodization Model for Intermitten Sports Sample: Soccer The most popular sport in the world is a game of great technical and physical demand, in which power, speed, agility, and specific endurance determine the final result. • • • • • Dominant energy systems: alactic; lactic acid; aerobic. Ergogenesis: o Alactic 15%, lactic acid 15%, aerobic 70%. Energy suppliers: creatine phosphate; glycogen. Limiting factors: power; starting power; power endurance; acceleration power; deceleration power; reactive power. Training objectives: power; power endurance; takeoff power; maximum strength. 99 Model for soccer: Amateur Team Dates Oct Nov Periodizati on Periodizati on of strength De c Jan Feb Mar Ap r Preparatory Anatomic al adaptatio n Mxs Powe r Mxs T Con v. To P, P-E Ma y Ju n Ju l Aug Sep Competitive transition Maintain: Power, P-E, Mxs Compensati on Lacti c Alactic Alactic O2 acid Lactic Compensati Lactic acid Aerobic Alacti acid on O2 c O2 O2 T = Transition, P = Power, P-E = Power-endurance Notes: The aerobic energy system (O2) can be trained via tempo training (60-600m) and specific drills of 3-5 minutes nonstop. The order of energy systems per phase also represents the priority of training in that training phase. Periodizati on of energy systems O2 Lacti c acid Model for soccer: Professional Team Dates Periodizat ion Aug Sep Preparatory Periodizat ion of strength AA Periodizat ion of energy systems O2 L.A. Alact ic O No Dec ct v Competitio T n Ja n Fe b Ma r Ap r Ma y Competition II Mxs Pow er P-E Alact ic L.A. O2 Maintain: Power, P-E Lactic acid Alactic O2 Periodization Model for Explosive sports Sample: Sprinting 100 Ju n Jul T Compensa tion A sprinter requires explosive speed and long, powerful strides. Endurance is not as important a consideration as acceleration because the sprinter needs to move quickly over a short distance. • • • • • Dominant energy systems: anaerobic alactic; lactic. Ergogenesis: o 80% alactic; 20% lactic. Energy supplier: creatine phosphate. Limiting factors: reactive power; starting power; acceleration power; power endurance. Training objectives: maximum strength; reactive power, starting power; acceleration power; power endurance. Model for Sprints Dates Oct Nov Dec Periodizati Preparatory I on Periodizati AA Mxs on of strength Jan Feb Mar Competition I Conv. to P Apr T Maint: Improve P, specific P May Jun Jul Aug Sep Prep. Comp. II Transition II Mxs Conv. Maint: Compen to P Improve . P, specific P Alactic Alactic Games L.A. Lactic Play acid AA Periodizati L.A. L.A. Alactic L.A. on of O2 Alactic Alactic energy O2 O2 system Note: The aerobic (O2) training for a sprinter represents the cumulative effect of tempo training (repetitions of 600m, 400m, and 200m) NONLINEAR (UNDULATING) PERIODIZATION MODEL Sample Mesocycle With Emphasis on Power sequenceWorkout Week Day 1 Day 2 Day 3 1 2 3 4 5 6 7 8 9 10 11 12 H P VH L P P H P P H P H P H VL P VH L P P VL L P H P P L H P L P H P P P VH VL = Very light intensity workout. L = Light intensity workout. M = Moderate intensity workout. H = Heavy intensity workout. VH = Very heavy intensity workout. P = Power workout. An active rest day can be used for any workout if needed. 101 Sample Mesocycle With Emphasis on Strength sequenceWorkout Week Day 1 Day 2 Day 3 1 2 3 4 5 6 7 8 9 10 11 12 H L VH L VH M H M M H P H L H VL P VH L P H VL L VH H H H L H VH L L H P H L VH VL = Very light intensity workout. L = Light intensity workout. M = Moderate intensity workout. H = Heavy intensity workout. VH = Very heavy intensity workout. P = Power workout. An active rest day can be used for any workout if needed. Sample Mesocycle With Emphasis on Hypertrophy and Strength sequenceWorkout Week Day 1 Day 2 Day 3 1 2 3 4 5 6 7 8 9 10 11 12 H M M L M H M H L M H L M H VH L M H H M VL L L M H L VH M M H L M VH M M L VL = Very light intensity workout. L = Light intensity workout. M = Moderate intensity workout. H = Heavy intensity workout. VH = Very heavy intensity workout. P = Power workout. An active rest day can be used for any workout if needed. Sample Mesocycle With Emphasis on Endurance and General Preparation Week 1 2 3 4 5 102 6 7 8 9 10 11 12 sequenceWorkout Day 1 Day 2 Day 3 L M L L VL H M H L VL H L M M L VL = Very light intensity workout. L = Light intensity workout. M = Moderate intensity workout. L M H VL M L H VL M L L VH M M VL L M VL H = Heavy intensity workout. VH = Very heavy intensity workout. P = Power workout. An active rest day can be used for any workout if needed. Conclusion Periodization is an organized approach to training that involves progressive cycling of various aspects of a training program during a specific period of time to bring about optimal gains in physical performance. The year’s training or macrocycle is divided into two or more mesocycles that contain preparatory, competition and transition periods. Each period has two or more microcycles that are often divided into heavy, light and medium training days. The mesocycles begin with high-volume and low-intensity training and progress to lowvolume and high-intensity training just prior to competition period. Transition periods of active rest follow each competition period and may be interspersed between phases or periods as unloading weeks. The nature of the sporting season dictates the length and number of mesocycles during the training year. SPEED TRAINING INTRODUCTION In most sports, athletes start from either a stationary or a partially moving posture and attempt to reach maximum speed as quickly as possible. This is referred to as acceleration, or the rate of change of velocity. Speed refers to the point at which athletes can accelerate no more and have reached their maximum rate of movement. At this point, athletes attempt to hold that pace as long as possible and to minimize “slowing” due to fatigue, friction, and air resistance. Three area of change can directly cause improvement of acceleration and speed: A. Taking faster steps (increasing stride rate) without decreasing the length of each stride. B. Increasing the length of each stride without decreasing stride rate. C. Using sound biomechanics (form). A fourth area – anaerobic endurance (speed endurance) 103 VL H L A. Has an indirect effect on acceleration and speed by reducing slowing at the end of a long sprint and permitting repetitive short sprints to occur at the same rate, relatively unaffected by fatigue. MOVEMENT MECHANICS Many functional movement have a ballistic nature even when initiated from a static position. The action begins with a preparatory countermovement in which involved muscle are rapidly and forcibly lengthened, or stretch-loaded and immediately shortened in a reactive or spring like manner. Eccentric-concentric coupling phenomenon is know as the stretch-shortening cycle (SSC). SSC performance is independent of maximum strength in highly. It is actions exploit the stretch reflex as well as the intrinsic elastic qualities of the muscle-tendon complex. SPRINT TRAINING GOALS The goal of sprinting is to achieve high stride frequency and optimal stride length by A. Maximizing the backward velocity of the lower leg and foot at the ground contact B. Minimizing vertical impulse and horizontal braking forces C. Emphasizing brief ground support time, explosive force production and rapid stride rate D. Developing eccentric knee flexion strength to improve leg recovery mechanics and place the foot properly at touchdown. FACTORS AFFECTING ACCELERATION AND SPEED 1. Muscle fiber Three types of muscle fiber are found in various parts of every athlete’s body: A. Slow-twitch red (type I) – aerobic i. Relies on oxygen to produce energy. ii. Develops force slowly and fatigue resistant. iii. Long twitch time, low power output, high aerobic capacity for energy supply. iv. Limited potential for rapid force development and anaerobic power. B. Fast-twitch red (type IIa) – anaerobic i. Intermediate fiber type can contribute to both anaerobic and aerobic activity. ii. It develops force moderately fast and has moderate fatigability, twitch time, power output, aerobic power, and anaerobic power. C. Fast-twitch white (type IIb) – anaerobic i. Does not rely on oxygen to produce energy. ii. It develops force rapidly, and has fatigability (low endurance), a short twitch time, high power output, low aerobic power, and high anaerobic power. 104 2. Body fat i. ii. Body fat of 6 to 10% of body weight for men and 12 to 17% for women is desirable for sprinting short distance. It is important to be aware that the lower range for both men and women may be unhealthy even for athletes, depending on the individual, but excess fat provides useless weight that negatively affects both acceleration and speed. 3. Age i. Age eventually all aspects of athletic performance. ii. No physiological reason exists for speed to diminish significantly from age 25 to 35 unless the athlete ceases training, loses strength and power, or adds body fat. 4. Gender i. Gender is a factor in sprinting. ii. The faster stride rates and longer strides of males appear to account for the time differences. 5. Mechanics i. Removing errors in arms action, body lean, foot contact, over striding, under striding, and tension can improve acceleration and speed. AGILITY AND COORDINATION INTRODUCTION Agility is the ability to change direction while maintaining good body position with explosively break, change direction and accelerate again. When integrated with a coordination system, agility permits an athlete to react to a stimulus, start quickly and efficiently, move in the correct direction, and be ready to change direction or stop quickly to make a play in a fast, smooth, efficient, and repeatable manner. People possess several types of agility: A. Whole-body horizontal changes of direction such as faking and avoiding. B. Whole-body vertical changes of direction such as jumping and leaping. C. Rapid movements of body parts that control movement of implements in sports such as tennis, squash, and hockey field. There are two critical elements in developing agility, coordination, and skill: A. The role of coordination is to execute the movements chosen in response to a stimulus. B. The role of skill is to orchestrate these coordinated abilities into an efficient and effective set of general, special, and sport-specific movements. COORDINATION 105 Taber’s Cyclopedic Medical Dictionary (Thomas 1993) defines coordination as “the working together of various muscles for the production of a certain movement.” In the field of exercise science, coordination is recognized as the ability of the body to organize two or more patterns to achieve a specific movement goal. Coordination involves an intricate and complex sequence of activities that can be simplified as below: A. Activities encompass reacting to sensory input (stimulus). B. Choosing and processing the proper motor program from learned skills (motor learning). C. Executing the action. The process of motor learning itself can be broken into four steps: A. Muscle movements stimulate the sensory receptors. B. The sensory receptors send information to the central nervous system (CNS), which acts as a processor for the information. C. The CNS executes, adjusts, or improves this information. D. The CNS sends the information back to the required muscles via motor pathways. There are three main stages in coordination refinement: A. Crude coordination (general) i. In this stage the athlete attempts to learn a new task and must consciously comprehend all movement. The athlete must be aware of his/her body in order to control the new task. ii. He / she will rely heavily on visual and auditory input systems because the other senses of the body’s aren’t quite ready to give highly accurate information. B. Fine coordination (special) i. C. In this phase the athlete starts to internalize how movements should feel, relying less on the visual and auditory systems, with the exception of input from the coach, and more on the depth receptors, proprioceptors, and dynamic and static contact receptors. Superfine coordination (specific) i. This is the final stage motor learning, when integration of the automated motor programs. FOUNDATIONS OF AGILITY AND COORDINATED MOVEMENT A. Balance and base of support i. Balance – the ability to maintain the center of body mass over a base of support. 106 ii. iii. The center of mass is a constant and will always lie within the body. Height, gender, and body type affect an athlete’s center of mass. In a static, erect position, the center of mass will be located at the same point as the center of gravity. B. Posture i. ii. iii. Good posture is critical to athletic performance and is seen in an erect trunk. It is the result of good core stability, which in turn is created by a harmony of contractions by the transverse and rectus abdominis, erector spinae, and many other muscles that help stabilize the pelvic and thoracic regions. Core stability acts as a solid foundation for the head, which should be in line with the trunk. This in turn creates a consistent, stable environment for the eyes to gather reliable information to add to the feedback system. C. Foot interaction with the ground i. For more positions in sport, improving foot-ground interaction can offer greater performance rewards than working on specific technical skills. ii. The calf represents only about 14% of the power within the kinetic chain, yet this component either activates or compromises all the bigger muscle groups within the chain such as the legs, hips, torso, and arms. D. Ground reaction forces i. ii. Ground reaction forces develop from the ability of the body to deliver force into the ground, transfer energy, and produce an equal and opposite reaction that propels the body and limbs in the desired direction. The lifting of the leg should be relatively how for multidirectional movement. E. Reaction i. Reaction will be improved by using the proper stance and weight distribution as well as taking a positive first step in the desired direction. ii. Reaction will be significantly improved with practice in visual, auditory, technical, and tactical anticipation. F. Acceleration and deceleration i. Acceleration relies on great posture, a total-body lean, positive shin angles, and aggressive piston-like leg and arm action. ii. Deceleration requires great relative strength and technique. iii. Deceleration occurs during cutting and stopping with various levels of abruptness; it is critical to bend or yield to stop. G. Starting quickness i. Starting quickness and first-step quickness are related to stance, reaction, and knowing where to go. ii. A balanced stance with great positive angles helps propel the athlete in the desired direction. H. Cutting i. Cutting, or executing a change of direction, requires rapid deceleration and reacceleration while performing various movements. 107 ii. Cutting can link movement in (1) one direction with the same movement in another direction, (2) link different types of movement. I. Crossover i. A crossover is a transition from lateral to backward movement, enabling the athlete to cover a lot of distance in a short time when immediate reaction is not required. DESIGNING AN AGILITY PROGRAM A drill is an exercise designed to address a specific aspect of a greater skill. It is important to classify drills based on how much they contribute (by percentage) to the desired motor ability (mobility, biomechanics, strength, energy system development, etc). Drills should be classified as to whether they are general, special, or sport-specific exercises for a given skill, movement, player, sport, or position. A. Evaluate athletes i. To improve and maximize the effectiveness of a training program, it is important to evaluate the needs of the athletes. ii. Evaluate the athlete by answering these questions: a) What is the developmental level of the athlete (age, skill, etc) b) What is the current state of his/her movement? c) What is the athlete’s limiting factor? Coordination? Motor ability (i.e., mobility, strength, etc.)? B. Structure the workout plan i. To help athletes get the most out of their workouts, coaches should do the following: a. Plan a specific goal for each movement session. b. Strive for perfect technical execution of every rep, set, drill, and skill. c. Quality (proper execution and intensity) is far more important than quantity. d. Work on simple skills before complex skills. e. Have athlete master fundamental (general) movement skills before progressing to more advanced (special ad specific) skills. f. Provide accurate feedback with visual and auditory cues, and encourage athletes to use sensory input. g. Work on stride frequency (rapid, response, quickness, decelerations) and stride length (short and long, power). h. Remember: starting is extending position and stopping is bending position. C. Movement preparation i. The goals of movement preparation are to: a. Elevate the core body temperature b. Actively elongate the muscles c. Activate the nervous system, proprioceptors, and stabilizers d. Improve kinesthetic awareness e. Work on technique by reinforcing critical motor programs daily 108 ii. Essentially, movement preparation is warming up in way that is similar to the way the athlete plays. iii. These exercises incorporate and reiterate correct posture, core stabilization, balance, coordination, and range of motion through all planes of movement. iv. The sequence of movement preparation: a. Warm-up – start with basic, active movements such as movement related to sports requirement, or even light games that improve kinesthetic awareness. b. Joint mobility – this type of work mobilizes and strengthens segments of the body in flexion, extension, and rotation. These drills actively ease the body into motion, gradually elongation and preparing the muscles for more intense dynamic flexibility. c. dynamic flexibility – work consists of a progression form walks, marches, and skips through runs, which start at the feet and progress up the body toward the head. These movements start slowly with small amplitude, then progress into large, fast movements that activate the performance systems essential for practice or competition. D. Movement drills i. This is the actual application of the lesson plan, incorporating into the drills all the elements specifically aimed at attacking the factors that are limiting an athlete’s performance. ii. Guideline progression for effective learning: a. Pre-programmed closed skills with variations such as eyes closed, shoe off, resistance or assistance, uneven surfaces. b. Pre-programmed with outside stimulus such as ball, hand signals, or commands, progressing to random agility (open skills). c. Random agility progressing from reaction to a single stimulus to reaction to several or sensory input systems. SAMPLE DRILLS (AGILITY AND COORDINATION) A. Carioca Purpose Develop balance, flexibility in the hips, footwork, and lateral speed. Procedure i. Start in a two-point stance. ii. Step with right foot over the left leg. iii. Move the left foot to the left behind the right leg. iv. Step with the right foot behind the left leg. B. 40-Yard Sprint Purpose Develop agility and conditioning. Procedure i. Start in a two-point stance on the starting line. ii. Sprint 5 yard (4.6 meters) to the first line, touch the line with your right hand, return to the starting line, and touch it with your left hand. 109 iii. iv. Sprint 10 yard (9 meters) to the second line, touch the line with your right hand, return to the starting line, and touch it with your left hand. Sprint 5 yard (4.6 meters) to the first line, touch the line with your right hand, and return to the starting line. Complex variations i. Combine biomotor skills during leg of the drill. ii. Start the drill from various positions (e.g., lying, sitting, etc). iii. Add tumbling to each turn. C. Forward roll over shoulder (tumbling) Purpose Develop total-body agility and kinesthetic awareness. Procedure i. Start in a two-point stance with left foot forward. ii. Bend over and start to fall forward. iii. As you are about to make contact with the ground, roll over the left shoulder. iv. Roll and come back up to your feet. v. Perform forward rolls over both shoulders and with either foot forward. Complex variations i. Add a sprint in any direction before or after the tumbling drill. ii. React to any stimuli after tumbling (e.g., a visual cue to run to a cone). D. Toes, get up, and catch Purpose Improve level-change capability; enhance transition from power to agility. Procedure i. Lie down on your back. ii. Hold a medicine ball in your hands. iii. Perform a chest pass into the air. iv. Scramble up and catch the ball before it hits the ground. 110 IMPLEMENTATION PROGRAM i. To introduce a drill to athlete, clearly define the name, purpose, procedure, key points, and the specific role the drill will play in making the athletes better during competition. ii. The athletes will then have a clear understanding of what they need to do. iii. Place athletes in situations in which they will learn by doing and feeling. iv. Guideline for athlete progression from beginner to advanced stages: a. Beginners – use the prescribed order at the beginning of the practice. Technique is more important than speed. The goal is to establish the foundation. b. Intermediate – use the prescribed order, progressing intensity, density, and volume. Have the athletes perform the drills before or during practice. c. Advanced – vary the order, intensity, density, and volume. Have the athletes perform the drills before, during, or after practice. v. During the general preparatory phase of training: a. The goal is to establish a conditioning foundation. b. The most effective way of doing this is to spend a lot of time working on movement preparation activities. c. Teach general and special movement skills. d. Enhance energy-system work with creatine games. vi. The special preparatory phase builds on the general preparatory phase. a. Work on mastering special in pre-programmed work. b. Mixing altered (resisted and assisted) movements with free movements. c. Progress all drills gradually after athletes demonstrate mastery so that the athletes are continually challenged. QUICKNESS Introduction Quickness is the ability to initiate skilled movements more quickly than his/her opponents. The quickest athlete will always dominate team sports that involve one-onone confrontations and individual sports whose strategies follow a read-react-and explode pattern. Biomechanical considerations The mechanical demands of sports quickness are multidirectional and rely much more on eccentric power, dynamic balance, proprioception, and balanced flexibility. Quickness is a learned skill that contributes to sports technique, individual tactics, and team systems. Each individual tactic relies on a series of quick biomechanical adjustment, 111 such as the sequence of backpedaling, cutting into a power shuffle, and then jumping forward to control turnover. The ability to change speed quickly while already moving fast is a deceptive tactic that proves effective technique to counteract the opponent movement. Being able to shift from fourth gear to second gear and jump right back up to fifth in the blink of an eye is one of the most dangerous offensive tools. The mechanics of quickness start with a good power position, athletic position, or ready position. During the movement: A. The feet remain close to the ground with more horizontal displacement than vertical. B. During the 1st two or three strides, 85% (or more) of time is spent supported by one leg. C. Directional change relies on independent leg action or weight transfer from one leg to the other. D. From there, quickness is manifested in many ways: i. ii. iii. iv. Forward, backward, and sideways stopping Forward, sideways, sideways crossover, and backward starting Reacting into lateral movement, cutting, turning, and spinning Backpedaling; crossing over; lunging; and controlled falling (to block a shot or dive for a ball). All these actions have unique mechanical demands. For many skills such as passing, throwing, and shooting, athletes must have effective rotational quickness. Anatomical and physiological considerations Most common sports actions is the stop-and-start, harnesses the natural system of the body for explosive force production. Anatomy and muscle physiology of quickness includes sensory receptors in the muscle spindle and musculotendinous junction. The series elastic element, myotatic stretch reflex, and intrafusil muscle fibers are worth noting for their contribution to the powerful force-production process. The stopping action loads the muscle under tension during the eccentric pre-stretch. This produces stored elastic (potential) energy that may increases the contractile speed of the agonist muscle during the concentric phase to produce a more explosive start. The keys are the rate of the stretch and the ability to minimize the time from ground contact to initiating the reversal of movement that some books called amortization phase or countermovement phase. In the quickness training myotatic stretch reflex is the “stretch receptor” in the muscle spindle, thus made up of extrafusal fibers the contract or elongate under external tension to produce movement, it also includes intrafusal muscle fibers to serve and providing feedback on the magnitude and rate of muscle lengthening as a protective machnism. During the action is rapid, extrafusal fiber elongate and intrafusal muscle stretch, the sensory receptors of the intrafusal fibers sent a massage directly to the spinal cord, which in response delivers a command to inhibit the agonist muscle and concentrically contract the stretched muscle 112 During a stop, the legs are loaded with potential elastic energy when the muscles are forced to lengthen (stretch) to absorb and control the stop. If the countermovement (amortization) time is too long, there is a slow stop or a pause at the bottom because of inadequate strength and power to reverse the movement immediately, the elastic energy is lost as heat. If the countermovement (amortization) time is short, the elastic energy will contribute to a more explosive concentric contraction. One of essential goal of quickness practice is to eliminate, or minimize, the pause that happens between the end of the eccentric phase and the beginning of the concentric (coupling time) phase of movement. Drills targeting the stop-and-start will always involve a rapid countermovement (amortization) and minimal coupling time (concentric), both of which are vital to producing quickness, explosive contraction, and to harness the elastic energy as kinetic energy. For these reasons, improved stopping is the key to improved quickness. For explosive quickness, first teach players how to stop more effectively rather than keying in on starting. Use drills that are designed to improve and accelerate braking capability to help stimulate the natural joint and muscle sensors. The stop-start action, eccentric-concentric sequence, countermovement, and center-of-gravity shift are drawn on to produce the maximal force in the shortest time. Neuromuscular considerations To improve quickness, training must focus on the neuromuscular system. Practice drills must be structured for the muscles to learn to fire more quickly and to allow the brain to rehearse specific movement patterns at high speeds. Neuromuscular adaptation that requires explosive and precise movement patterns with perfect technique. Nervous-system training produces stored motor patterns of explosive complex movements. This kind of training increases the ability of the brain to turn on the muscle more quickly. Nervous-system training results in an increased firing rate of motor neurons, selective and maximal recruitment of fast-twitch fibers, quicker reactions, and more explosive force production. Bioenergetic considerations From bioenergetic perspective, quickness is improved exclusively with the adenosine triphosphate-phosphocreatine (ATP) energy system (thus through anaerobic training), and training prescribed accordingly. At the end of a match, during a prolonged shift, or in overtime, the successful athlete will still be able to mobilize motor units to coordinate explosive skills under fatigue. Developing quickness A. Introduce quickness drill technique by incorporating the movements into dynamic warm-ups and agility drills. B. Quickness practice is quality practice, not quantity practice. C. The athlete needs to do full-out overspeed efforts for few seconds followed by generous recovery. D. Complement and support quickness development with high-velocity anaerobic conditioning. 113 E. The athlete must be lean to optimize quickness. F. Excess fat weight does not contribute to force production and only provides an additional load to overcome. G. Physical development should prioritize the legs and the speed center, or core of the body (abdominals, lower back, adductors, abductors, hip rotators, hip flexor, hip extensors, and glutes), which initiates and powers all high-speed actions. H. Muscle hypertrophy in the speed center and leg muscle groups also lowers the body’s center of gravity. I. For quickness readiness, athletes first need efficiency of movement, which includes coordination, dynamic balance, agility, balanced flexibility, proprioception, and sports technique. J. In building the prequickness foundation, balanced flexibility is the most critical. K. The balanced flexibility contributes not only to the quick-feet drills but also directly to improved quickness. L. Serious muscle imbalances, in strength or flexibility, prevent dynamic balance and equal quickness in all directions. Stopping and starting A. The majority of injuries occur not in the acceleration phase but during the deceleration and stopping needed to achieve quick direction changes. B. Stop training includes eccentric strength, stop-and-hold, stop-and-balance, single-leg stop, lateral stop, and stopping on unstable surfaces. C. On the start phase, increase foot quickness by instructing athletes to “pop” the feet off the ground. They should pop off from the toes and minimize ground contact time. D. Medicine balls help bridge the gap between upper-body power and quickness, allowing the athlete to explode through a full range of motion in a standing, more sport-specific movement pattern. E. The athlete should always maintain a ready position with knees flexed and hips low. F. Regeneration time, needs a shorter work phase and a longer rest period. Incorporating quickness drills in practice A. For progression within a particular drill, increase the number of foot contacts to achieve in a set time, increase lateral distance, increase drill movement-pattern complexity, and decrease the time to complete a drill course. B. Incorporate visual or auditory stimuli at random times in varied movement patterns. i. E.g., players may explode into action after a ball is dropped in front of them, attempting to catch it before it hits the ground again. ii. Coaches can also call out directions. These are read-react-and-explode drills. C. Once the athlete has improved his or her quickness, the final progression is to develop his/her ability to execute coordinated and explosive quickness while fatigued. i. Top athletes aren’t just quicker, but they must also be able to mobilize motor units to coordinate explosive complex movements when heavily fatigued. 114 ii. To become great athlete, they must learn how to execute sports skills at a high rate of acceleration. iii. Put overspeed quickness drills at the end of practice. iv. Incorporate quickness development into drills on the court, field or the ice to help transfer improvement into game. v. They must be able to execute skills at top-end acceleration through a variety of movement directions under balanced and off-balance conditions, and in some sports, while withstanding contact. QUICKNESS EXAMPLE DRILLS A. Multidirectional skipping Purpose Improve quickness and coordination in locomotive mechanics. Procedure A. While skipping, respond to commands or cues to change your direction, using forward, backward, and side-skipping. B. Stay facing a target in front of you. Complex variations A. Increase the amplitude of your skip and lower the number of reps. B. Concentrate on the first skip after the command to change direction. C. Add a sprint or skill on command. B. Medicine-ball lateral shuffle/pass Purpose Improve quickness and elastic strength. Procedure A. You and a partner face each other. The distance you travel depends on the weight of the medicine ball: The lighter the ball, the farther you travel. B. The drill begins with you both shuffling laterally while performing a chest pass back and forth along the predetermined route. C. Upon reaching the target distance, return in the opposite direction while continuing to pass the ball. Complex variation A. One of you leads and is free to change direction at will. The other athlete reacts and follows. C. Wheelbarrow drill Purpose Improve power in the upper body and core muscles. 115 Procedure A. A partner holds your feet while your hands perform a predetermined pattern or task. B. This should be done as quickly as possible while maintaining a straight body. C. It can be timed to judge improvements or your coach can encourage the use of visual cues, such as ladders, mini hurdles, dot patterns. Complex variations A. Perform jumps instead of hand runs. B. Perform lateral shuffles or circular walks with the hands. NOTE: All plyometric exercises can be initiated via a stimulus, such as a whistle blow, and can be preceded or followed by any skill (for example, catching a ball, sprinting, tumbling, etc). D. Ball drops with a partner Purpose Improve visual stimulus response and first-step quickness. Procedure A. Using a ball, which can be specific to the target sport, have a partner stationed 5 to 10 yards (4.6 to 9 meters) away and drop the ball from shoulder height. B. Your partner must catch the ball after the first the first bounce but before a second bounce. Complex variations A. The height of the drop, or distance between partners, can be changed to accommodate skill level. B. You may choose to use a ball in each hand in order to increase the difficulty of responding. E. Backpedal (assorted biomotor skills) Purpose Improve quickness and flexibility in the hip flexor. Procedure A. In an athletic stance, maintain your center of gravity over your base of support and run backward. B. Increase your stride length with good form. Complex variation A. On command, use an “open step” and sprint to a designated cone. SPORT - SPECIFIC REQUIREMENT FOR SPEED, AGILITY, QUICKNESS (SAQ) PROGRAMME. 116 TENNIS Dynamic balance is highlighted in tennis, not just during movement but also in the instant just before ball contact with the racket. Player must be able to recover their balance to avoid leaving the rest of the court open. Examples for tennis movement: A. Close proximity. i. The area within approximately four meters of the offensive position. ii. Usually around the center mark where the players hit the majority of their shots. iii. Critical movement skills are lateral and base, allowing the players to move with perfect balance to offensive or defensive forehands & backhands. iv. The base stance allows the athlete to be poised for lateral movement. B. Baseline to volley. i. Starts with the multidirectional stance, which enables players to react in a 360° arc. ii. They must take a positive first step; link together three to five explosive, acceleration steps; and then link into deceleration and lateral and base (split step), making sure to keep the hips down. iii. This will put them back in perfect position to react to a great volley and recover immediately into a good stance to repeat the action. SOCCER A. Goalkeepers need to work especially hard on stance, reaction skills from all positions, crossover steps link to jumping and diving, landing and tumbling, and a modified base stance to give them the best opportunity to react in every direction, including vertical and horizontal jumping. B. Fullbacks must work on acceleration and deceleration linked to a modified lateral and base so that they can position themselves to react to the offensive player. To make these linked skills more specific in drills, have athletes take a position against an opponent. As with all positions in soccer, fullbacks will greatly benefit from working on S-style runs. C. Front-line players (forwards) should concentrate on being able to link many different skills. They cover significantly greater ground than other players and benefit from being able to link acceleration to transition. Players should train modified absolute speed while being bumped along the way by another player. Soccer players should become proficient at all special and specific and specific stride-frequency drills to enhance their ability to dribble at speed. VOLLEYBALL A. Defensively, blockers players i. Must work on developing the base stance that readies them for lateral movement. ii. They must develop crossover to base components and then link them with vertical jumping. 117 iii. These athletes must learn to link the inertia from lateral movement to a vertical jump by redirecting ground reaction forces. B. Defensively, backcourt players i. Must master the stance. ii. They must maintain positive angles. iii. Keep their weight forward by bending the legs and hips, and maintain good posture in the receiving position. C. Offensively, setters players i. Need to be proficient at linking every movement skill. ii. Outside hitters must be incredibly agile so that they can link several explosive accelerative steps, and then decelerate and transfer this energy through positive angles and a stable core to vertical movement. iii. Once airborne, the stable torso acts as a platform that allows athletes to maintain balance, generate spiking forces, and stick the landing without going into the net. FUNDAMENTALS OF FUNCTIONAL STRENGTH TRAINING Introduction Over the past 10 years, there has been a shift toward making training more functional. The revolution began, as it often does, with physical therapists, and functional training was slowly adopted by coaches and personal trainers. Functional training is a method of strength training which mimics certain sport or activity movement patterns and combines them into a training regime. This type of training is based on two very simple facts. First, most sports are not played in a stationary position. Second, most sports involve two or more joints working together. The functional training goal is to not only work specific muscles, but to also work the stabilizing muscles in the “core” deep abdominal and back as well as other stabilizing muscles in the hip and shoulder areas. Traditional (Conventional) versus Functional Traditional strength training usually consists of trying to develop strength and build muscle through isolating specific muscle groups. This type of training could be called dysfunctional training and only develop segmental strength. It is adequate for building muscle but it does not train the body to meet the specific demands of life and sports. It does not reproduce real life conditions and only serves to create non-functional strength. Typical strength training attempts to develop the body through a piecemeal approach, isolating specific muscle groups. Worse yet, this is often done with the body unloaded, sitting stationary on a machine while moving one isolated body part through a controlled range of motion, usually in a strict linear, straight ahead motion. Traditional strength training train isolated muscle function while functional training train the body to work as a unit. The central nervous system is programmed to make the body function as a unit, not to work in terms of isolated muscle function. 118 Functional Training Tools Functional training equipments include stability balls, form roller, half form roller, wobble board, Airex mats, agility ladder, medicine balls, weight vests, tubing or resistance band. The Functional Continuum To properly design a functional strength training program, three principles need to follow which are (1) Learn the basic exercises first, (2) begin with simple body weight exercises, and (3) progress from simple to complex exercises (refer table 1). Examples of exercises will be demonstrated during the practical session. Table 1. The functional continuum. Least Functional Most Functional Lower Body Exercise Type of Exercise Leg Press Machine Squat Barbell Squat One-Leg Squat Rationale Lying, no stabilization by athlete Standing, no stabilization by athlete Two legs One legs Machine Bench Press Supine, no stabilization by athlete Upper Body Exercise Bench Press Dumbell Bench Press Supine, Supine, moderate single-arm stabilization stabilization Type of Exercise Rationale Push Up Prone with closed chain One-Leg squat on Airex pad One leg with additional challenge to balance Stability Ball Push Up Prone with additional challenge to balance Adapted from Boyle M. (2004) Examples of Functional Training for Sport Specific A. Golf A golfer who wants to maximize his power, should focus on the major muscles involved (legs, hips to the torso & through the upper body). By using a high pulley with weights & stimulating his swing all the way to the from the beginning of the stroke to the follow through B. Soccer A soccer player who want to improve the speed & distance of his kick could use an ankle strap on a low pulley machine to mimic the kicking motion used on 119 playing games, challenging the muscle of the leg along with balance & torso stabilization C. Tennis A tennis player can develop a powerful forehand or backhand by using a pulley with a resistance to mimic swing movement, including chest, shoulder, forearm muscle & torso POWER TRAINING FOR SPORTS Introduction Power training enables an athlete to apply the greatest amount of their maximal strength in the shortest period of time. This is crucial for many sports men and women who will rarely be required nor have the time to produce maximal forces. Most athletic activities involve far faster movements and far higher power outputs than are found in maximal strength exercises. An athlete can be exceptionally strong but lack significant explosive power if they are unable to apply their strength rapidly. A prerequisite to starting one of these routines is the development of a solid base of functional strength. Power training will becomes less effective and the risk of injury is increased if a phase of anatomical adaptation has not already been completed. Types of Power Training Listed below are the commonly used methods for power training: A. Heavy Strength Training Strength training alone can increase explosive power by positively affecting the top half of the power equation or the peak force production. Most athletic movements also start from a stationary position and it is this early phase of moving a resistance that requires the most effort. Therefore the greater an athlete's strength is, the more explosive this initial phase of motion will be. However, once this initial inertia has been overcome less force and more speed is required to continue the movement and heavy strength training becomes less suitable. Additionally, lifting weights of 70-100% 1-RM has also been shown to reduce the rate of force production which is counter-productive to power development. This may explain why in strength trained individuals heavy resistance training is less effective at increasing vertical jump performance compared to ballistics or plyometrics. B. Explosive Strength Training Once a plateau in strength has been reached, more sport-specific types of power training are required. Completing traditional weight lifting exercises as 120 fast as possible with relatively light loads produces in theory, the greatest power output. However, there is a problem with this approach. Lifting a bar rapidly loaded with 30% 1-RM is difficult to execute, particularly in the final phase of the movement. The athlete must decelerate and stop the bar in order to keep it under control. This deceleration activates the antagonist muscles negatively affecting power output and hinders the required adaptations. Performing ballistics and plyometrics training can avoid this problem. In this types of training there is no deceleration. The athlete is free to jump as high as possible or throw an object as far as possible without restricting the movement. The parameters for explosive strength training can be seen in the table below: Table 2. Explosive Strength Training Guidelines Load (single effort events) Load (multiple effort events) Number of exercises Reps (single effort events) Reps (multiple effort events) Sets Rest Interval Speed of execution Frequency 80 – 90% of 1RM 75 – 85% of 1RM 2–5 1–2 3–5 3–5 3 – 5 min Fast (1:1:2 or 1:1:3) 2–3 Adapted from Fleck S.J and Kramer W.J (2004) C. Ballistics During a ballistic action, the force far outweighs the resistance so movement is of a high velocity. The resistance is accelerated and projected. Examples include a medicine ball throw and a jump squat. The aim is to reach peak acceleration at the moment of release projecting the object or body as far as possible. It is recommended that a load of 30-35% 1-RM should be used for exercises that include free weights such as jump squats (Fleck S.J and Kramer W.J., 2004). For many ballistic exercises the weight of the objects themselves dictate the load i.e. medicine balls ranging from 2-6kg (4.4-13lbs) and kettlebells ranging from 10-32kg (22-70lbs). Parameters for ballistic power training are summarized in the table below: Table 3. Ballistic Training Guidelines 121 30 – 35 of 1RM 2–3 10 – 20 1–3 3–5 2 – 3 min Explosive 2 – 3 / week Load Number of exercises Reps (medicine ball) Reps (30% of 1RM) Sets Rest Interval Speed of execution Frequency Adapted from Fleck S.J and Kramer W.J (2004) Ballistics can place considerable eccentric forces on joints, ligaments and tendons when landing from a jump squat for example. Athletes should always progress gradually from unloaded to loaded exercises and must not be fatigued before starting a ballistic power training session. Choosing the Right Form of Power Training The type of power training employed must be the most specific to the sport or event. Olympic lifts, such as power cleans, may be suitable for sports such as football and rugby. Some plyometric exercises are suitable for soccer and hockey. Ballistic exercises with medicine balls fit well with basketball and volleyball. But many sports would benefit from a combination of power training methods. Take basketball for example - explosive strength training such as power cleans, plyometric exercises such as depth jumps and ballistics such as jump squats and overhead medicine ball throws would all be suitable choices. PLYOMETRIC TRAINING Plyometric is a combination of Greek words (pilo = more; metric = to measure). Plyometric refers to those activities that enable a muscle to reach maximal force in the shortest possible time. The muscle is loaded with an eccentric (lengthening) action, followed immediately by a concentric (shortening) action. Plyometrics revolve around jumping, hoping and bounding movements (lower body) and swinging, quick action push-off, catching or throwing, arm swings and pulley throw (upper body). Plyometric exercises depend on the quality of movement, not the quantity of exercises, to accomplish speed-strength characteristic. A practical definition of plyometric exercise is a quick, powerful movement using a prestretch or countermovement that involves the stretch shortening cycle (SSC). The purpose of plyometric exercise is to increase the power of subsequent movements by using both the natural elastic components of muscle and tendon and the stretch reflex. A wide variety of training studies shows that plyometrics can improve performance in vertical jumping, long jumping, sprinting and sprint cycling. It appears also that a relatively small amount of plyometric training is required to improve performance in these tasks. Just one or two types of plyometric exercise completed 1-3 times a week for 6-12 weeks can significantly improve motor performance. Additionally, only a small amount of volume is required to bring about these positive changes. For example, 2-4 sets of 10 repetitions per session or 4 sets of 8 repetitions. Currently research has demonstrated 122 an increase in running economy for endurance athletes. Thus, this type of training regime may also beneficial for endurance runner. Mechanics and Physiology of Plyometric A muscle that is stretched before a concentric contraction, will contract more forcefully and more rapidly. A classic example is a “dip" just prior to a vertical jump. By lowering the center of gravity quickly, the muscles involved in the jump are momentarily stretched producing a more powerful movement. But why does plyometric work? Two models have been proposed to explain this phenomenon. A. Mechanical model In this model, elastic energy is created in the muscles and tendons and stored as a result of a rapid stretch. This stored energy is then released when the stretch is followed immediately by a concentric muscle action. The effect is like that of stretching a spring, which wants to return to its natural length. The spring is this case a component of the muscles and tendons called the Series Elastic Component (SEC). B. Neurophysiological Model When a quick stretch is detected in the muscles, an involuntary, protective response occurs to prevent overstretching and injury. This response is known as the stretch reflex. The stretch reflex increases the activity in the muscles undergoing the stretch or eccentric muscle action, allowing it to act much more forcefully. The result is a powerful braking effect and the potential for a powerful concentric muscle action. If the concentric muscle action does not occur immediately after the pre-stretch, the potential energy produced by the stretch reflex response is lost. (i.e. if there is a delay between dipping down and then jumping up, the effect of the counterdip is lost). It is thought that both the mechanical model (series elastic component) and the neurophysiological model (stretch reflex) increase the rate of force production during plyometrics exercises Stretch-Shortening Cycle (SSC) The SSC employs the energy storage capabilities of the series elastic component (SEC) and stimulation of the stretch reflex to facilitate a maximal increase in muscle recruitment over a minimal amount of time. The SSC involves three (3) distinct phases – eccentric, amortization and concentric (refer table 4). The first phase (eccentric) is the pre-stretch or eccentric muscle action. Here, elastic energy is generated and stored. The second phase (amortization) is the time between the end of the pre-stretch and the start of the concentric muscle action. The shorter this phase is, the more powerful the subsequent muscle contraction will be. The third phase (concentric) is the actual muscle contraction. In practice, this is the movement the athlete desires – the powerful jump or throw. This sequence of three phases is called the stretch-shortening cycle. In fact, plyometrics could also be called stretch-shortening cycle exercises. 123 Table 4. Summary of Stretch Shortening Cycle PHASE 1 - Eccentric ACTION Stretch of agonist muscle PHYSIOLOGICAL EVENT − − 2 - Amortization Pause between phases 1 and 2 − − 3 - Concentric Shortening of agonist muscle − fibers − Elastic energy is stored in the SEC. Muscle spindles are stimulated. Ia afferent nerves synapse with alpha motor neurons Alpha motor neurons transmit signals to agonist muscle group. Elastic energy is released from SEC Alpha motor neurons stimulate the agonist muscle group. Type of Plyometric Exercises A. Rhythm Plyometrics Rhythm Plyometric help develop the coordinated movement skills required in sports. Their primary objective is to give the athlete greater kinesthetic awareness or body sense, coordination and rhythm. Examples of common rhythm drills are skipping, running with high knee lift, running butt kicks etc. These drills develop the necessary technique and coordination to let speed and power be expressed most efficiently. B. Power Plyometrics Power plyometrics emphasize the simultaneous application of maximum strength and quickness. The focus of movement is explosiveness. Power plyometric drills include a variety of jumping movements – hops, bounds, single jump and leaps. Upper body exercise include medicine ball throws, pendulum throws etc. C. Speed Plyometrics Speed plyometrics emphasize the speed component of training. The objective of speed plyometrics training is to force the neuromuscular system to respond more quickly to a stimulus. Many of these drills will be the same as those done for the rhythmic movement, stressing maximum quickness. Fast skips, arm swings are a few examples. Plyometric Program Design A. Mode The mode can be determine by the body region performing the given exercise. E.g., a single-hop is a lower body exercise; two-hand medicine ball throw is an upper body exercise (refer table 5). 124 Table 5. Lower-Body Plyometric Drills Type of jump Jumps in place Standing jumps Rationale These drills involving jumping and landing in the same spot. Jumps in place emphasize the vertical component of jumping and are performed repeatedly, without rest between jumps; the time between jumps is the SSC’s amortization phase. Examples of jumps in place include the squat jump and tuck jump. These emphasize either horizontal or vertical components. Standing jumps are maximal efforts with recovery between repetitions. The vertical jump and jumps over barriers are example of standing jumps. Multiple hops and jumps involve repeated movements and may be viewed as a Multiple hops combination of jumps in place and standing jumps. One example of a multiple and jumps jumps is the zigzag hop. Bounds Box drills Depth jumps Bounding drills involve exaggerated movements with greater horizontal speed that other drills. Volume for bounding is typically measured by distance but may be measured by the number of repetitions performed. Bounding drills are normally greater than 98 ft (30 m) and may include single and double leg bounds in addition to the alternate leg bounds. These drills increase the intensity of multiple hops and jumps by using a box. The box may be used to jump on or off. The height of the box depends on the size of the athlete, the landing surface, and the goals of the program. Box drills may involve one, both or alternating legs. Depth jumps use gravity and the athlete’s weight to increase exercise intensity. The athletes assumes a position on a box, steps off, lands, and immediately jumps vertically, horizontally, or to another box. The height of the box depends on the size of the athlete, the landing surface, and the goals of the program. Depth jumps may involve one or both legs. B. Intensity Plyometric intensity refers to the amount of stress placed on involved muscles, connective tissues and joints and is controlled primarily by the type of drill performed (refer table 6). Table 6. Factors Affecting the Intensity of Lower Body Plyometric Drills Factor Points of contact Speed Effect The ground reaction force during single leg lower body plyometric drills places more stress on an extremity’s muscles, connective tissues, and joints, than during double-leg plyometric drills. Greater speed increases the intensity of the drill. Height of the The higher the body’s center of gravity, the greater the force on landing. drill 125 Participant’s weight The greater the athlete’s weight, the more stress is placed on muscles, connective tissues, and joints. External weight (in the form of weight vests, ankle weights, and wrist weights) can be added to the body to increase a drill’s intensity. C. Frequency Refers to the number of plyometric training sessions per week. Research is limited on the optimal frequency for plyometric training. Many researchers suggest relying on the recovery time between plyometric sessions. Forty-eight to seven-two hours between plyometric sessions is a typical recovery time guideline. Two to four plyometric sessions per week are commonly performed by athletes. During the in-season, one session per week is appropriate for football players, while two or three session per week are common for track and field athletes. During the off-season, plyometric training frequency may increase to two or three sessions per week for football players and three to four times per week for track and field athletes. D. Recovery As plyometric drills involve maximal efforts, complete and adequate recovery (the time between repetitions, sets and workouts) is required. Research is limited on the optimal frequency for plyometric training. Recovery for depth jumps may consist of 5 to 20 seconds of rest between repetitions and 2 to 3 minutes between sets. The time between sets is determine by a proper work-to rest ratio (e.g., 1:5 to 1:10) and is specific to the volume and type of drill performed. Recovery between workouts range is between two to four days. In addition, drills for the same body area should not be performed two days in successions. E. Volume Plyometric volume is typically expressed as the number of repetitions and sets performed during a training session. Lower-body plyometric volume is normally given as the number of foot contacts (each time a foot, or feet together, contact the surface) per workout (refer table 7). In plyometric bounding, it is expressed as distance. For example, an athlete start program with a single-leg bound for 30 meter and may progress to 100 meter. Table 7. Appropriate Plyometric Volumes Plyometric experience Beginning volume* Beginner (no experience) 80 to 100 126 Intermediate (some experience) 100 to 120 Advanced (considerable experience) 120 to 140 * Volume is given in contacts per session F. Program length Research is limited on the optimal program length for plyometric training. Currently most program range from six to ten weeks. In general, plyometric training should be prescribed similarly to both resistance and aerobic training. For quick and powerful movement sports, it is beneficial to perform plyometric exercise throughout the training cycle (macrocycle). The intensity and volume of the chosen drills should vary with the sport and the season. G. Progression Plyometric training must follow the principles of progressive overload. For example, an off season plyometric program for football may be performed twice a week. The program’s intensity should progress from low to moderate volume of low intensity plyometric to low to moderate volumes of moderate intensity, to low to moderate volumes of moderate to high intensity. H. Warm up The specific warm up for plyometric training should consist of low intensity, dynamic movement (refer table 8). Table 8. Plyometric Warm-Up Drills Drill Explanation Marching Mimics running movements Emphasizes posture and movement technique Enhances proper lower-body movements for running Jogging Prepares for impact and high intensity plyometric drills • Toe jogging-not allowing heel to touch ground, emphasizes quick reaction • Straight leg jogging-not allowing or minimizing leg flexion in preparation for impact of plyometric drills • “Butt-kickers:-flexing leg to allow heel to touch buttocks Skipping Exaggerated form of reciprocal upper- and lower-extremity movements Emphasis on quick takeoff and landing mimics plyometric activities 127 Footwork Drills that target changes of direction Preparation for changes of direction during plyometric drills Examples include shuttle, shuffle, pattern, and stride drills Lunging Based on the lunge exercise May be multidirectional (e.g., forward, size, backward) Combining Plyometric Training With Other Forms of Exercise Most sports training use multiple energy systems or required other forms of exercise to properly prepare the athletes for their competitions. Each energy system and sport specific need must be included in a well designed training program. A. Combination of plyometric training with resistance training guidelines: i. Combine lower-body resistance training with upper-body plyometrics and upper-body resistance training with lower-body plyometrics (refer table X). ii. Perform heavy resistance training and plyometric training on the same day is usually not recommended. However, some athletes may benefits from complex training – a combination of high intensity resistance training followed by plyometrics. iii. Resistance training exercises may be combined with plyometric movement to further enhance gains in muscular power. For example, performing a squat jump with approximately 30% of one’s squat 1RM as an external resistance further increase performance. This method is an advanced from complex training and should be performed by athletes who have previously participated in high intensity plyometric training program. Table 9. Sample Schedule for Integrating Resistance Training and Plyometrics Day Resistance training Plyometrics Monday High-intensity upper body Low-intensity lower body Tuesday Low-intensity lower body High-intensity upper body Thursday Low-intensity upper body High-intensity lower body Friday High-intensity lower body Low-intensity upper body 128 B. Combination of plyometric training with aerobic training guidelines. It is recommended to performed plyometric exercise before aerobic endurance training as aerobic training may have a negative effect on power production. Safety Considerations in Plyometric Training A. Pre-training evaluation of the athlete i. Technique Proper technique must be demonstrated to maximize the drill’s effectiveness and minimize injury. For lower-body plyometrics, proper landing technique is essential, particularly in depth jumps. If the center of gravity is offset from the base of support, injury may occur. The shoulders should be over the knees during the landing, which should be accomplished through flexion of the ankles, knees and hips. ii. Strength For lower-body plyometrics, the athlete’s 1RM squat should be at least 1.5 times his or her body weight. For upper-body plyometrics, the bench press 1RM should be at least 1 times the body weight for larger athletes (weigh > 100 kg) and at least 1.5 times the body weight for smaller athletes (weigh < 100 kg). Other alternative measure of upper-body strength is the ability to perform five claps push ups in a row. iii. Speed For lower-body plyometrics, the athlete should be able to perform five repetitions of squats with 60% body weight in 5 seconds or less. For lower-body plyometrics, the athlete should be able to perform five repetitions of bench press with 60% body weight in 5 seconds or less. iv. Balance An athlete beginning plyometric training for the first time would be required to stand in on one leg for 30 seconds without falling. An experienced athlete beginning an advanced plyometric training must maintain a single-leg half squat for 30 seconds without falling. v. Physical Characteristic Athletes who weigh more than 100 kg may be at risk for injury when performing plyometric exercises. Therefore, those athletes weighing over 100 kg should avoid high volume, high intensity plyometric exercises and should not perform depth jumps from heights greater than 18 inches. Athletes with history of muscle 129 strains, pathological joint laxity, or spinal dysfunction should exercise caution when beginning a plyometric training program. PHYSICAL FITNESS TESTING PROCEDURE AGILITY (T-TEST) Equipment a. Four cones b. Stopwatch c. Flat floor with good traction d. One timer, one spotter, and one person to record times Figure 1. Floor layout for the T-test. C 4.57 m B 4.57 m D 9.14 m A Procedure a. Arrange the four cones as seen in figure 1 (points A, B, C, and D). b. Have the athlete warm up and stretch prior to the test. c. The test begins with the athlete standing at point A. d. On the “Go” command, the athlete sprint forward to point B and touches the base of the cone with the right hand. e. The athlete then shuffles to the left 5 yd (4.57 meter) and touches the base of the cone at point C with the left hand. (Note: When shuffling the athletes should always face front and not cross the feet.) f. The athlete then shuffles to the right 10 yd (9.14 meter) and touches the base of the cone at the point D with the right hand. g. The athlete then shuffles to the left 5 yd and touches the base of the cone at point B with the left hand, then runs backward past point A, at which time the timer stops the watch. h. For safety, a spotter and gym mat should be positioned several feet behind point A to catch an athlete who falls while running backward. 130 i. j. The test score is the best time of two trials, to the nearest 0.1 s. Reasons for disqualification of a trial: The athlete fails to touch the base of any cone, crosses one foot in front of the other instead of shuffling feet, or fails to face forward for the entire test. (Adapted from SPEED TEST (40-YARD / 36.57 METER SPRINT) Equipment a. Stopwatch b. Flat running surface with start and finish lines marked 40 yard apart, with at least 20 yard after the finish line for declaration Procedure a. Have the athlete warm up and stretch for several minutes. b. Allow at least two practice runs at submaximal speed. c. The athlete should be positioned just behind the starting line with one or two hands on the ground. d. On the “Go” command, the athlete sprints 40 yard at maximal speed. e. The score is average of two trials, to the nearest 0.1 s. 131 (Adapted from POWER (VERTICAL JUMP)- OPTIONAL Equipment a. A smooth wall with a ceiling higher than the highest jumper could surpass. b. A flat floor with good traction c. Chalk d. Measuring tape or stick (Alternatively, a commercialize device may be used – VERTEC) Procedures (using a wall and chalk) a. The tester rubs chalk on the fingertips of the athlete’s dominant hand. b. The athlete stands with the right shoulder about 15 cm from the wall. c. With both feet flat on the floor, reaches as high as possible with the right hand and makes a chalk mark on the wall. d. The athlete then lowers the right hand and without a preparatory or shutter step, flexes the knees and hips, bring the trunk forward and downward, and swing the arms backward. e. This downward countermovement prior to upward propulsion is the eccentric phase of stretch shortening cycle, which enables maximum jump height. The concentric portion of the movement follows immediately, characterized by knee and hip extension and a forward and upward arm swing. f. At the highest point in the jump, the athlete reaches up with the right hand and places a second chalk mark on the wall. The score is the vertical distance between the two chalk marks. 132 g. The best of three trials is recorded to the nearest 1cm. Table 10. Vertical Jump Scores Poor Below average Average Good Excellent Males <46cm 50cm 55cm 60cm >65cm Females <36cm 40cm 45cm 50cm >55cm Jump height can be converted into a power using the following formula: Power = Body Mass (kg) x (4.9 x Height Jumped in Meters)2 For example if your weight 80kg and jumped 50cm (0.5m) your score would be: Power = = = 80 x (4.9 x 0.5)2 80 x 2.45 x 2.45 480kg.m 133 (Adapted from FLEXIBILITY (SIT AND REACH TEST) Equipment a. Measuring tape or stick b. Adhesive tape (Alternatively, a standard sit and reach box may be used) Procedure a. Have the athlete warm up with non-ballistic exercises involving the hamstrings and lower back. For example, begin by walking rapidly for 3-5 min; performing several repetitions of flexing forward from a standing, knees-straight position, reaching toward the toe, then reaching upward toward the ceiling ( all without jerking); jogging in place while trying to kick the heels into the upper thighs from behind; and finishing with standing toe-touching or similar stretching on the floor. b. Tape the yardstick or tape measure to the floor. Place one piece of tape about 24 in. (51 cm) long across the yardstick and at a right angle to it at the 15-in. (38 cm) mark. c. Have the shoeless athlete sit with the yardstick between the legs with its zero end toward the body, the feet 12 in. (30 cm) apart, the toes pointed upward, and the heels nearly touching the edge of taped line at the 15-in. (38 cm) mark. d. Have the athlete slowly reach forward with both hands as far as possible on the yardstick, holding this position momentarily. To get the best stretch, the athlete should exhale and drop the head between the arms when reaching. Be sure the athlete keeps the hands adjacent to each other and does not lead with one hand. The fingertips should remain in contact with the yardstick. The tester may hold the athlete’s knee down, if necessary, to keep them straight. A score of less than 15 in. (38 cm) indicates that the athlete could not reach the bottom of feet. e. Record the best of three trials, to the nearest 0.25 in. or 1 cm. (Adapted from 134 PRACTICAL SESSION PHYSICAL FITNESS TESTING Objectives: • Able to teach correct execution of physical fitness test procedures. TABLE 11: PHYSICAL FITNESS TRAINING – PRACTICAL (1 HOUR) Activity Mode Power test demonstration and practice • Vertical jump test T&P Time Allocated 15 min Agility test demonstration and practice • T-Test test T&P 15 min Speed test demonstration and practice • 40 yard test T&P 15 min Flexibility test demonstration and practice • Sit and reach test T&P 15 min Remarks Ensure correct execution of test technique and procedures T & P – theory and practice Equipments - Refer practical notes POWER TRAINING Objectives: • Able to teach correct execution of power exercise. TABLE 12: POWER EXERCISES – PRACTICAL (1 HOUR) Activity Power exercise demonstration and practice • Push press • High pull • Power clean Mode T&P T & P – theory and practice Equipments - Refer practical notes PLYOMETRIC DRILLS 135 Time Allocated 20 min 20 min 20 min Remarks Ensure correct execution of test technique and procedures Objectives: • Able to teach correct execution of lower and upper body plyometric exercises. TABLE 13: PLOMETRIC TRAINING – PRACTICAL (40 MINUTES) Activity Mode Plyometric warm up drill • Marching • Jogging – toe jogging, straight leg jogging, butt kicker • Footwork – shuffle, stride drill • Lunging – multidirectional Plyometric drills • Jump in place – 2 foot ankle hop, Double leg tuck jump, Single leg tuck jump • Standing jumps – double leg vertical , jump over barrier, single leg vertical jump • Multiple hops and jumps – double leg hop, double zig zag hop, single leg hop • Bounds – skip, power skip, double arm alternate leg bound • Box drills – single leg push-off, side to side push-off, squat box jump • Depth jumps – depth jump, depth jump with lateral movement, single leg depth jump • Upper-body plyometric drills – chest pass, depth push-ups, 45 degree sit-up. T & P – theory and practice Equipments - Refer practical notes 136 Remarks P Time Allocated 10 min P 30 min Ensure correct execution of exercises SPEED, AGILITY AND QUICKNESS (SAQ) DRILLS Objectives: • Able to teach correct execution of SAQ exercises TABLE 14: SAQ TRAINING – PRACTICAL (40 MINUTES) Activity Speed drills – crouched-variation resisted start. Mode Time Allocated P 40 min Falling starts, starts, partner Remarks Ensure correct execution of exercises Agility drills – Carioca, 40-yard shuttle sprint, toss-get-up and catch Quickness drills – multidirectional skipping, medicine ball lateral shuffle/pass, partner blind toss T & P – theory and practice Equipments - Refer practical notes FUNCTIONAL TRAINING DRILLS Objectives: • Able to teach correct execution of functional exercises TABLE 15: FUNCTIONAL TRAINING – PRACTICAL (40 MINUTES) Activity Functional dynamic warm up • Linear active warm-up (20 meter) – high knee walk • Lateral active warm-up – lateral squat Functional exercises • Upper body – single arm push up (medicine ball), double arm push up (medicine ball), overhead press with lunges • Lower body – single leg squats, step down, • Core (abs and back) – prone jack knife, forward ball roll, twisting lunge, balanced toss Cool down exercise 137 Mode Time Allocated P 10 min P 40 min P 10 min Remarks Ensure correct execution of exercises T & P – the ory and practice Equipments: • Medicine balls (1 to 3 kg) • Fit-ball • Resistance band REFERENCES 1. Bompa, T., O., & Carrera, M., O. (2005). Periodization Training For Sport, Champaign IL, Human Kinetics. 2. Boyle, M. (2004). Functional Training For Sports, Champaign IL, Human KInetics 3. Earle, R., W. & Baechle, T.R (2004). NSCA’s Essentials Of Personal Training. Champaign IL, Human Kinetics. 4. Foran, B. (2001). High-Performance Sport and Conditioning. Champaign IL, Human Kinetics. 5. Kreamer, W., J., & Fleck, S., J. (2007). Optimizing Strength Training, Champaign IL, Human Kinetics. “No great work can be done without sacrifice.” Three Sentences for getting Success. KNOW MORE THAN OTHERS WORK MORE THAN OTHERS EXPECT LESS THAN OTHERS 138 UNIT 6 SPORTS NUTRITION PLANNING YOUR NUTRITION FOR TRAINING Why do you need a nutritional plan for training? 139 You need a nutritional plan for training to ensure you are meeting your body’s increased nutrient requirements. These increased nutrient requirements will depend on your training volumes, frequency and intensity. Your requirements will also vary during the different training phases of the year. The skills you learn when designing your nutritional plan for training can be used to individualize your plan. Following sound nutrition practices is most important during training. If you think about it, you spend most of your time training and this is largely what determines your performance in competition. Good nutrition will help you maximize your training and your competition performance. Your nutrition on competition day is just fine-tuning of your training nutrition. Diet planning principles • Adequacy Provides sufficient energy and nutrients • Balance Consume a number of different foods in appropriate proportion to each other. Calorie intake and energy expenditure should be balanced to maintain a healthy weight and body composition. Balance ordinarily results from practicing moderation and variety, and requires that your child consume appropriate amounts of essential nutrients • Calorie control Energy balance is essential for maintenance of lean muscle mass, immune and reproductive function; and optimal athletic performance. Energy balance occurs when intake = expenditure. If an increase in body mass is the goal, then energy intake must be sufficient to meet the needs for muscle growth. • Nutrient density Large amount of nutrients in a food with a small amount of calories • Moderation In consuming foods that are not nutrient dense.Your child should not eat too little or too much of any one food or nutrient. • Variety Because no single food or supplement contains all the nutrients needed for optimum health, growth and performance, eating foods from each of the five food groups daily, as well as different foods from within each group, is essential. Consume a variety of foods within and among the food groups Guides to planning meals for athletes The basic diet and what is eaten at times of strenuous sports activity are pieces in the jigsaw puzzle of performance capability. Those who understand the basic 140 principles of nutrition can prepare their body optimally for the athletic effort and provide it with what it needs immediately before, during and after the performance. Nutrition in sport is one piece of the jigsaw, one among the many elements that affect athletic capability. In addition to nutrition, training, motivation and physical constitution also play an essential part. For both professional and recreational athletes, a normal, balanced diet is the foundation for optimum performance. The most important aspect of an athlete’s diet is that it follows the basic guidelines for healthy eating. Here we rely mainly on what the food pyramid tells us. The food pyramid serves as a basis for planning a healthy, well-balanced diet, gives the nutrients required for athletic performance, and as an extra bonus, saves the money that might otherwise be spent on energy bars or supplements. Classic food pyramids set out optimal nutrition guidelines for each food category with carbohydrates as well as fruit and vegetables at the bottom and sugary treats at the top. Normal food guidelines are for the general public and include some recreational activity which is sometimes two to three times fitness per week but this cannot be designated as sports nutrition. When you do more sports you need more energy and more carbohydrate and this is not implemented in normal pyramids. The original pyramid has been expanded to cover the energy and nutrient needs for daily exercise by athletes and active individuals The food pyramid for athletes shows what an athlete needs to do to cover these additional nutritional requirements. As an example athletes do not necessarily need to increase their fruit and vegetable intake from the recommended five portions, but should up their wholegrain products and legumes by one serving per additional hour of exercise. Also included are sports drinks and foods. There are sports foods which are widely used and they ease nutrition in real life, so it doesn’t make sense to ignore this foodstuff. The pyramid can’t consider all the specific aspects of every single sport for every single athlete, but as a guideline it works for a wide range of sports. 141 142 143 144 Putting It All Together It is not hard to plan your training diet. Start with three main meals, morning and afternoon tea – these meals should meet baseline nutritional requirements. • To meet your increased energy needs you may need to increase your carbohydrate foods. • Check that you are eating enough protein, iron and calcium containing foods. • Make sure you are meeting your basic fluid needs as well as increased fluid needs when training. • A good guide to meeting your needs is a stable body weight and satisfying your appetite. • Once you have planned your training diet you will be able to adapt it to meet your body’s needs during different phases of training. • Your training nutrition is changing constantly so keep an eating record and check this every six to eight weeks to ensure you are meeting all of the nutritional recommendations. Checklist for training nutrition The checklist below will show you where you are at with your training nutrition. After you have filled out your eating record go through the checklist and identify where you are not meeting the recommendations. Set goals for improvement. Did you have breakfast? Yes / No Did you have lunch? Yes / No Did you have dinner? Yes / No Did you eat carbohydrate in the 2 hours before training? Yes / No Did you eat carbohydrate and protein within half to one hour after Yes / No training? Did you have 6-8 cups of fluid? Yes / No Did you have extra fluid before/during/after training? Yes / No Did you have enough serves of carbohydrate to meet your needs? Yes / No Did you have enough serves of protein to meet your needs? Yes / No Did you have enough serves of food containing iron to meet your Yes / No needs? Did you have enough serves of food containing calcium to meet Yes / No your needs? Main points for the diet of athletes 145 • • • • • • • You need a nutritional plan for training to ensure you are meeting your body’s increased energy and nutrient requirements. Carbohydrate provides the most readily available superior source of fuel or “energy” for muscles to use. Athletes should consume 55-70% of their energy from carbohydrate (5-10 g per kg of body weight per day), depending on their sport. Protein provides the body’s building blocks. Athletes should consume 15% of their energy from protein (0.8-1.7 g per kg of body weight per day), depending on their sport. Fat provides the body’s most concentrated energy source. Athletes should try to keep their fat intake low. Fluids are essential to regulate temperature and prevent dehydration. Athletes should drink fluid before, during and after exercise. Athletes should drink enough fluid to balance their fluid losses. Two hours before exercise 400 to 600 ml of fluid should be consumed, and during exercise 150 to 350 ml of fluid should be consumed every 15 to 20 min depending on tolerance. After exercise the athlete should drink adequate fluids to replace sweat losses during exercise. The athlete needs to drink at least 450 to 675 ml of fluid for every 0.5 kg of body weight lost during exercise. There are many fluids athletes can choose. Sports drinks are specifically designed for efficient rehydration for exercise lasting more than 60 minutes. The optimum composition for sports drinks is 4-8% carbohydrate and 500-700 mg/litre of sodium. Iron is an essential element. A well planned diet will provide sufficient iron. Calcium intake is important to ensure peak bone mass and maintenance of strong bones. How do you put it all together to design a nutritional plan for training? Start with three main meals and snacks and check that you have included enough carbohydrate, protein, fluid, iron and calcium to meet your needs. Proportion of carbohydrate, protein, and fat as energy for various 146 Water Output: Normal versus Exercise 147 5000 4000 Stool Breath Sw eat 3000 Urine 2000 1000 0 Normal Exercise Relating % loss of body weight to symptoms and performance in the heat • • • • • • • • 0% -- normal heat regulation and performance 1% -- thirst is stimulated, heat regulation during exercise is altered, performance begins to decline 2% -- further decrease in heat regulation, increased thirst, worsening performance 3% -- more of the same 4% -- exercise performance cut by 20 - 30% 5% -- headache, irritability, "spaced-out" feeling, fatigue 6% -- weakness, severe loss of thermoregulation 7% -- collapse is likely unless exercise is stopped 148 PLANNING YOUR NUTRITION FOR COMPETITION Competition nutrition is an extension of training nutrition. The correct nutritional strategies before, during and after competition will help you achieve your event goal. Planning your meals for competition is a good way of focusing on the event. By knowing when, what and how much you are going to eat and drink, you can be confident that you have the best possible nutritional preparation. Planning ensures that the food you want is available, whether you’re at home or 149hiamine149e. 6.2.1 • Pre-competition nutrition Carbohydrate loading The goal of carbohydrate loading is to superload muscles with glycogen to delay fatigue and enable you to maintain high intensity exercise for longer. When competing for over 90 minutes normal glycogen stores will not be enough to maintain exercise. Carbohydrate loading is a method of increasing stored glycogen by 200-300%, thereby allowing the athlete to delay fatigue and maintain high intensity exercise for longer. Carbohydrate loading is of no benefit for sports of short duration, and is undesirable in sports with strict weight criteria. • Considerations for planning the pre-competition meal • How well have you recovered from your last exercise session? If you are in a tournament or a tour, you pre-competition meal will be part of your recovery and preparation plan. • What time is your event? You should aim to have a meal with more than 200g of carbohydrate about three hours before your event. As most events start early in the morning you have to decide if you are going to get up early and eat, or if you will have a smaller carbohydrate meal 1-2 hours before, and concentrate on getting more carbohydrates during the actual event. • In weight-bearing exercise like running, your stomach is joggled around and you may experience more gastrointestinal symptoms (stomach and gut upsets) compared with non-weight-bearing sports like cycling and swimming. • Strategies to reduce stomach and gastrointestinal upsets • Reduce your fibre intake by choosing lower-fibre cereals like cornflakes, rice bubbles, white rice, pasta, bread and soft fruits with no skin. • Reduce fat in the pre-competition meal. For example, have toast and jam with no butter, use low-fat milk and do not choose to have a fried meal or a meal containing fat (e.g. nasi lemak) for breakfast. • Try liquid meals. They empty quickly from the stomach, and maybe useful for athletes who compete early in the morning or who find it 149 • • difficult to eat solid meals before competition. Make the liquid meal with water or trim milk. Ensure that hydration is adequate. Make sure you have tested out your pre-competition meal in training. • Pre-competition meal ideas • White toast and low-fat spreads/spaghetti/corn/banana. • Cereal with trim milk and/or yoghurt and/or fresh canned fruit. • Muffins or crumpets with jam/honey. • Low-fat pancakes with fruit. • Creamed rice and fruit. • Oatmeal with trim milk. • Pasta with a tomato-based sauce. • Risotto. • Baked potato with corn/spaghetti/tomato-based sauce. • Sandwiches/rolls with spreads/banana. • Fruit salad and yoghurt. • Liquid meals. • Pre-competition fluids Make sure you are well hydrated in the days leading up to the event. On event day, maintain hydration by drinking at least two glasses (500 ml) of fluid with your pre-event meal, then continue to drink up to start time, especially when it is hot. Use water, a sports drink, diluted fruit juice or flat, diluted soft drink. 6.2.2 6.2.3 During-competition nutrition The goals of your diet during your event are to prevent hydration, prevent depletion of glycogen/energy stores, maintain blood glucose, maintain electrolyte balance, prevent stomach upsets. Strategies to meet your competition nutrition goals •Practise your nutrition plan in training and write it down. •Plan to meet fluid needs, taking into consideration temperature and humidity on the day. •Start drinking early in competition and continue drinking at regular intervals during the event. Some people set their watches to alarm every 20 minutes to remind them to drink. •When exercise intensity is high in tournament situations and in longer events, plant to consume 1 g of carbohydrate per minute or 30-60 g per hour. •Use carbohydrate-containing sports drinks or moderate to high glycemic index foods. For example, a litre of 7% sports drink will provide 70 g carbohydrate, a banana will provide 20 g carbohydrate, a cereal bar will provide 20 g carbohydrate. •When using a sports drink choose one you have tested in training. A sports drink with 4-8% (ie: 40-80 g/l or 4-8 g/100ml) carbohydrate and 500-700 mg/l (20-30 mmol) sodium is recommended. •Consume your carbohydrate-containing drink or food at regular intervals during your event. 150 •In an endurance event like a marathon you may want to consume solid foods. Examples of moderate to high glycaemic index foods that can be used include ripe bananas, sandwiches with jam, honey or banana, jelly beans, cereal bars. •Sports bars can also provide a convenient form of carbohydrate. Experiment with these in training. You may want to take the wrapper off and cut the bar into bite-sized pieces to make them easier to eat. •Find out what foods will be available at the aid stations at your event and familiarize yourself with these in training, or take your own food and fluids with you. 6.2.4 Nutrition for after your event •The goals of your diet following your event are to restore fluid and electrolyte balance, replenish depleted glycogen stores and provide nutrients to help repair muscle damage. •Following your event, it is essential to ensure fast recovery so you body is prepared for your next training session. Take an active role in your recovery, plan what you need too eat and drink and make sure you have it with you. •Make your recovery food and fluid your first priority after your event. •Typically, it is high glycemic carbohydrates that will make good recovery foods. •Examples of carbohydrate foods with moderate-high Glycemic Index: Most breakfast cereals Most forms of rice White and brown breads Sports drinks and soft drinks Sugar, jam and honey Potatoes Tropical fruits and juices •Examples of nutrient-rich carbohydrate foods and meal combinations: Breakfast cereal with milk Flavoured yoghurt Fruit smoothie or liquid meal supplement Sandwich with meat and salad filling Stir-fry with rice and noodles 6.9 Strategies to restore your fluid and electrolyte balance No matter how well you followed your fluid plan during your event, you will probably have some degree of dehydration. It is essential to replace lost fluids. • Start drinking as soon as you have finished your event, and continue to drink until your urine is clear and you body weight is back to pre-race weight. You need to drink 1.5 times the amount of body weight you have lost to replace fluid losses from exercise and from urination. • Replacing sodium losses will ensure maximum fluid retention. You can replace sodium losses by drinking a sports drink or eating a post-recovery meal or snack with salt as a component, or added. • 151 • • • 6.10 • • • • • Sports drinks provide optimal rehydration as the sodium content rebalances body fluid, and helps your body retain the consumed fluid. Drink cool fluids that you enjoy. Avoid drinks containing caffeine and alcohol after competing. Strategies to replace used glycogen stores For the first two hours after your event, blood is still rushing to your muscles. Muscle cells are still receptive to taking up glucose and enzymes are receptive to converting glucose to glycogen. This is the best time to maximize your recovery by eating moderate to high glycemic index foods and using sports drinks. These products will provide glucose to the blood and muscles quickly. If you wait until after two hours to consume carbohydrate, your recovery will be slowed down. In the 24 hours after your event aim to consume 7-10 g carbohydrate per kg of body weight from carbohydrates. Approach this goal by eating 1 g carbohydrate per kg of body weight as soon after exercise as possible, then have a high-carbohydrate meal in the next two hours, and normal meals and snacks for the rest of the day. If a main meal is not available, have carbohydrate snacks (at least 50 g every two hours) until you can have your next main meal. Sports drinks can provide carbohydrate as part of the glycogen resynthesis strategy. 6.2.7 Strategies to help the repair of muscle damage Muscle damage can occur due to body contact or eccentric exercise (that is, the type of exercise that makes you sore the next day). The damage to muscle fibres means they cannot store glycogen as well. If you have had a hard competition or have bruising and muscle damage (that is, soreness), pay special attention to meeting your recovery carbohydrate needs to help muscle recovery. Do not expect optimal endurance performance until soreness is gone, as muscle glycogen will not be totally replaced. Avoid alcohol for at least 24 hours. Alcohol causes more blood to flow to the injured area, increasing swelling and bleeding that will slow recovery and make the injury worse 6.11 • • • • • • 6.12 Hints for the post-event diet Recovery will be just as rapid if the carbohydrate is consumed in a few meals or many snacks, as long as you meet your total carbohydrate needs. Moderate to high glycaemic index foods may promote greater glycogen storage than low glycaemic index foods. Carbohydrates can be consumed as solids, fluids or a combination of both. Including small amounts of protein in the recovery meal can help increase the rate of muscle glycogen storage. Glucose and sucrose provide faster muscle recovery than fructose, the sugar found in most fruit and fruit products. Fructose does enhance liver glycogen storage, but only very slowly replaces muscle glycogen. It can form part of the recovery meal, but should not be the only source of carbohydrate. Choose foods that you like! Main points about your competition diet 152 • • • • • 6.13 Carbohydrate loading involves tapering exercise and increasing carbohydrate intake in the three to four days before your event to “superload” muscles with glycogen. Pre-event nutrition is vital to ensure glycogen stores are topped up, hydration is optimal and stomach upsets and hunger are prevented. Eat at least 200 g of familiar foods in the four hours before competing and drink enough fluid to be comfortable. During your endurance event consume 30-60 g carbohydrate per hour and aim to replace fluid losses. Begin eating and drinking early in your event. Post-event nutrition restores fluid and electrolyte balance, and replenishes depleted glycogen stores, reducing recovery time. In the first half to one hour after your event you should eat 1 g of carbohydrate per kg of body weight, eat some protein and begin drinking fluids. Within the next two hours you should aim to have a high-carbohydrate meal and follow this with regular meals and snacks and drinks for the rest of the day PERIODIZATION OF NUTRITION The concepts of periodization can also be applied to your nutritional program. By structuring your dietary intake you can maximize the training benefit of each phase. This involves adjusting your nutritional plan or your daily diet to complement your current the training phase. Your dietary needs, during the base phase of training, for example, differ from your pre-event nutritional needs. Understanding how to parallel nutrition periodization with your training periodization can maximize your training progression and ensure race day achievement. There are five phases/cycles to a yearly periodization training plan. The phases are listed below with a brief description of the training focus, along with some nutrition considerations that will be discussed in more detail in future articles. Each training phase has different amounts of volume, frequency, intensity and duration and each phase builds on the one before. As you progress through each phase, your body will encounter varying amounts of physical stress, and these stresses can impact your needs for fluids, carbohydrates, protein and fats. 6.14 General preparation or foundation phase The preparation phase or “preseason” may last from 4 to 8 weeks. The training focus is preparing the body for the training yet to come. Some coaches refer to this period as “training to train”. Workouts tend to emphasize building basic aerobic endurance and muscular strength. The base phase may last 12 to 24 weeks. The focus is skill and aerobic development that is the backbone of training. Both the weekly volume and duration of training start low and build throughout the phase. Workouts tend to further develop aerobic endurance, muscular strength and may include sport-specific skills. • Nutrition considerations 153 This is the phase where you want to establish a solid nutrition foundation. Establishing good dietary habits early in the season will allow you to handle the training stresses that come in the next phase. Your calorie, carbohydrate and protein needs will increase, so eating regularly scheduled meals is essential. You can also start experimenting with new sports drinks, bars or gels at this time. If you have gained weight during your transition phase or “off season”, this is the time to make dietary adjustments so you can get back to your optimal racing weight. 6.15 Specific preparation or build phase The build phase can last 4 to 8 weeks. The training focus is becoming faster and more efficient in all three disciplines. Workouts are more specific and include race-pace training efforts and combination workouts to help simulate the physical stresses of racing. In this phase, the training volume remains consistent while the intensity increases. • 6.16 Pre-competition or peak phase The peak phase is where you want to bring together the year-long training for an optimal performance. This phase may last 1 to 2 weeks – the frequency and duration of the workouts decrease, but the intensity remains high. • 6.17 Nutrition considerations The biggest nutritional challenge during this phase is consuming adequate calories to support the high volume and increased intensity of training. High intensity training means more carbohydrate is used as a fuel source. Protein requirements may also be increased due to the physical stress from high intensity training. Eating meals more frequently may help meet the increased nutrient needs. Also, maintaining a stable body weight is advised, and actively pursuing weight loss is discouraged. Long brick workouts provide a great opportunity to experiment with your race day nutritional plan. Keeping a training food log can be helpful when you finally sit down to plan out your race day nutritional strategy. Nutrition considerations Since calorie requirements may be less due to a decreased volume, you may need to reduce extra food portions. You do not want to severely restrict calories but you do want to eliminate “empty” calories or less nutritious foods. Since training intensity remains high, carbohydrates continue to be the main energy source. Therefore high carbohydrate foods (whole grains/cereals/fruits) should be included at all meals. Your eating plan should emphasize “clean” wholesome foods to help your body start the recovery process and prepare for race day. Competition phase The competition phase is usually the week before your competition. The focus is physical and mental rest and recovery. Training duration is significantly reduced. Short bouts of moderate to high intensity workouts may be planned to keep you feeling “sharp”. 154 • 6.18 Transition or off season phase The transition phase follows your last competition of the year. This period can last 1 to 6 weeks. The focus should be on enjoying more free time with family and friends as well as trying different physical activities other than swimming, biking or running. You want to remain physically active but not necessarily in a structured way. • 6.19 Nutrition considerations This phase tends to get the most attention as athlete’s want to know “what should I eat?” If you pay attention to your nutrition in the prior phases, what you should be eating the week or days leading up to your race is very similar to what you should have been eating all along. Nutritional adjustments that may be made are a slight decrease in overall calories, a gradual increase in carbohydrates, and the avoidance of caffeine or excessive salt. A few days before your race there should be a decrease in fibre intake, increase in fluid intake and for some athletes, increased sodium intake. Nutritional choices during this phase ensure you get to the starting line with an adequately filled fuel tank. Nutrition considerations Weight management tends to be the major issue in this phase. Since training volume is reduced, you need to adjust your dietary intake to compensate for the potential reduction in calories burned. This is a good time to make dietary changes. Increase diet variety by eating more natural wholesome foods including more colourful fruits and vegetables. Clean out the cupboards and pantry. Throw away all those outdated gel packets and vitamin/ minerals supplements. Discard the less than healthful foods that you are tempted to overconsume. Restock your refrigerator, freezer and pantry with more healthful foods so that when you enter into the general preparation phase, you already have the basics in place to get your season off to a good start. Nutritional ergogenic aids and exercise performance The use of nutritional supplements in sport is widespread and few serious athletes do not, at some stage in their career, succumb to the temptation to experiment with one or more nutritional supplements. Nutritional ergogenic aids are aimed primarily at enhancing performance (either by affecting energy metabolism or by an effect on the central nervous system), at increasing lean body mass or muscle mass by stimulation of protein synthesis and at reducing body fat content. Although not strictly ergogenic (i.e. capable of enhancing work performance), supplements aimed at increasing resistance to infection and improving general health are seen by athletes as important in reducing the interruptions to training that minor illness and infection can cause. Athletes use a wide variety of supplements aimed at improving or maintaining general health and vitamin and mineral supplementation is 155 widespread. There is a theoretical basis, and limited evidence, to support the use nutritional supplements during periods of intensive training, but further evidence is required before the use of these supplements can be recommended. 6.20 Sports foods and supplements shown in scientific trials to benefit performance • Antioxidant Vitamins C and E • Bicarbonate and Citrate • Caffeine • Calcium Supplement • Creatine • Electrolyte Replacement Supplements • Glucosamine • Glycerol • Iron Supplement • Liquid meal supplements • Multivitamins and Minerals • Sports bars • Sports drinks • Sports gels 6.4.2 Sports foods and supplements which hints at possible benefits • Colostrum • Glutamine • HMB • Melatonin • Probiotics • Ribose 6.4.3 Supplements which have no proof of beneficial effects • • • • • • • • • • • • • • Branched chain amino acids (& other free-from amino acids) Carnitine Chromium picolinate Coenzyme Q10 Cordyceps Cytochrome C Gamma-oryzanol & ferulic acid Ginseng Inosine Nitrous oxide supplements Oxygen boosters Pryuvate Rhodiola rosea Vitamin supplements when used in situations other than summarised in 156 Group A • ZMA Claimed Action Research on action Side Effects Legality improve concentration, decreases fatigue and appetite mixed, some support significant, dangerous banned for shooting events Anabolic steroids increases strength, lean muscle mass, and motivation supports significant, dangerous illegal Androstenediol same as steroids limited, refutes unknown banned by Olympics Androstenedione same as steroids refutes, no benefits significant banned by Olympics and NCAA supports long term effects unknown legal supports significant, dangerous illegal appears safe legal Supplement Amphetamines Prevents breakdown and Beta-hydroxy-betaenhances methyl butyrate synthesis of (HMB) protein, increases strength, improves body composition Blood doping increase aerobic capacity Branched chain amino acids (BCAA) enhance endurance mixed, some performance, antisupport for anticatabolic (slows catabolic function down muscle breakdown) Caffeine increases muscle contractility and aerobic endurance, enhances fat metabolism supports mild legal to certain urine levels Carnitine increases fat metabolism refutes, no benefits none legal Chromium increase lean mass refutes, safe to 400 mg no benefit unless daily, potentially prior deficiency dangerous above 157 legal this level Coenzyme Q10 enhances function of electron transport chain, does not support improves use for athletes endurance performance appears safe legal increases response to tissue growth factors, Conjugated linoleic hormones, and acid (CLA) cell messengers, increases muscle mass, weight loss, and fat loss limited, animal studies GI distress legal Dehydroepiandrost erone (DHEA) increases endogenous steroid production no benefit in healthy athlete potentially dangerous banned by Olympics Energy gels quickly supply carbohydrates during endurance exercise supports none, if taken with water legal Ephedrine stimulates CNS, increases energy, delays fatigue, stimulates weight loss no benefit potentially dangerous banned by Olympics, FDA and other organizations increase endurance supports mild legal Human growth hormone increases muscle mass, strength and power, decrease fat mass supports causes enlargement of organs and increases risk of chronic disease banned by world anti-doping agency Leucine decreases muscle breakdown, spares muscle glycogen stores limited, no ergogenic effect none legal limited intestinal cramping and diarrhea legal Fluids increases energy and muscle cell Medium chain mass, decrease triglycerides (MCT) fat mass, delay fatigue Multivitamins increase energy, no benefit unless endurance and 158hiamine15 aerobic capacity, 8emi deficiency 158 none at RDA, some toxicities at high doses legal enhance recovery Phosphates increase ATP production, limited support energy and muscle endurance mild at high doses legal optimizes muscular growth and repair supports, increased need for protein with activity none unless underlying medical condition legal Sports drinks increases endurance performance, supply fluid, carbohydrate, and electrolytes supports none legal Zinc increases physical endurance, mental alertness, concentration, free testosterone limited none if taken in recommended dosages legal Protein Proposed Nutritional Ergogenic Aids – Vitamins Nutrient Vitamin A Vitamin D Vitamin E RDA Males 900 mcg/d Females 700 mcg/d Proposed Ergogenic Value Constituent of rhodopsin (visual pigment) and is involved in night vision. Some suggest that vitamin A supplementation may improve sport vision. Promotes bone growth and mineralization. Enhances 5 mcg/d calcium absorption. (age Supplementation with <51) calcium may help prevent bone loss in osteoperotic populations. 15 mg/d As an antioxidant, it has been shown to help prevent the formation of free radicals during intense exercise and prevent the destruction of red blood cells, improving or maintaining oxygen delivery 159 Summary of Research Findings No studies have shown that vitamin A supplementation improves exercise performance [346]. Co-supplementation with calcium may help prevent bone loss in athletes susceptible to osteoporosis [347]. However, vitamin D supplementation does not enhance exercise performance [346]. Numerous studies show that vitamin E supplementation can decrease exercise-induced oxidative stress [348-350]. However, most studies show no effects on performance at sea level. At high altitudes, vitamin E Nutrient RDA Vitamin K Males 120 mcg/d Females 90 mcg/d Males 1.2 mg / Thiamin (B1) d Females 1.1 mg/d Riboflavin (B2) Males 1.3 mg/d Females 1.7 mg/d Niacin (B3) Males 16 mg/d Females 14 mg/d Pyridoxine (B6) 1.3 mg/d (age <51) Proposed Ergogenic Value to the muscles during exercise. Some evidence suggests that it may reduce risk to heart disease or decrease incidence of recurring heart attack. Summary of Research Findings may improve exercise performance [351]. Additional research is necessary to determine whether long-term supplementation may help athletes better tolerate training. Vitamin K supplementation (10 mg/d) in elite female athletes has been reported to increase calciumImportant in blood clotting. binding capacity of osteocalcin and There is also some evidence promoted a 15–20% increase in that it may affect bone bone formation markers and a 20– metabolism in 25% decrease in bone resorption postmenopausal women. markers suggesting an improved balance between bone formation and resorption [352]. Coenzyme (160hiamine pyrophosphate) in the removal of CO2 from decarboxylic reactions from pyruvate to acetyl CoA and Dietary availability of 160hiamine in TCA cycle. does not appear to affect exercise Supplementation is capacity when athletes have a theorized to improve normal intake [353]. anaerobic threshold and CO2 transport. Deficiencies may decrease efficiency of energy systems. Constituent of flavin nucleotide coenzymes Dietary availability of riboflavin involved in energy does not appear to affect exercise metabolism. Theorized to capacity when athletes have a enhance energy availability normal intake [353]. during oxidative metabolism. Studies indicate that niacin Constituent of coenzymes supplementation (100–500 mg/d) involved in energy can help decrease blood lipid metabolism. Theorized to levels and increase homocysteine blunt increases in fatty acids levels in hypercholesteremic during exercise, reduce patients [354,355]. However, cholesterol, enhance niacin supplementation (280 mg) thermoregulation, and during exercise has been reported improve energy availability to decrease exercise capacity by during oxidative metabolism. blunting the mobilization of fatty acids [356]. Has been marketed as a In well-nourished athletes, supplement that will improve pyridoxine failed to improve muscle mass, strength, and aerobic capacity, or lactic acid 160 Nutrient RDA Cyanocobalamin (B12) 2.4 mcg/d Folic acid (folate) 400 mcg/d Pantothenic acid Beta carotene Vitamin C Proposed Ergogenic Value Summary of Research Findings accumulation [353]. However, aerobic power in the lactic when combined with vitamins B1 acid and oxygen systems. It and B12,it may increase serotonin also may have a calming levels and improve fine motor skills effect that has been linked to that may be necessary in sports an improved mental like pistol shooting and archery strength. [357,358]. In well-nourished athletes, no A coenzyme involved in the ergogenic effect has been production of DNA and reported. However, when serotonin. DNA is important combined with vitamins B1 and B6, in protein and red blood cell cyanocobalamin has been shown synthesis. Theoretically, it to improve performance in pistol would increase muscle shooting [358]. This may be due to mass, the oxygen-carrying increased levels of serotonin, a capacity of blood, and neurotransmitter in the brain, decrease anxiety. which may reduce anxiety. Functions as a coenzyme in Studies suggest that increasing the formation of DNA and dietary availability of folic acid red blood cells. An increase during pregnancy can lower the in red blood cells could incidence of birth defects [359]. improve oxygen delivery to Additionally, it may decrease the muscles during exercise. homocysteine levels (a risk factor Believed to be important to for heart disease) [360]. In wellhelp prevent birth defects nourished and folate deficientand may help decrease athletes, folic acid did not improve homocysteine levels. exercise performance [361]. 5 mg/d Acts as a coenzyme for acetyl coenzyme A (acetyl CoA). This may benefit aerobic or oxygen energy systems. None Serves as an antioxidant. Theorized to help minimize exercise-induced lipid peroxidation and muscle damage. Males 90 Used in a number of mg/d different metabolic Females processes in the body. It is 161 Research has reported no improvements in aerobic performance with acetyl CoA supplementation. However, one study reported a decrease in lactic acid accumulation, without an improvement in performance [362]. Research indicates that beta carotene supplementation with or without other antioxidants can help decrease exercise-induced peroxidation. Over time, this may help athletes tolerate training. However, it is unclear whether antioxidant supplementation affects exercise performance [349]. In well-nourished athletes, vitamin C supplementation does not appear to improve physical Nutrient RDA Proposed Ergogenic Value involved in the synthesis of epinephrine, iron absorption, and is an antioxidant. Theoretically, it could benefit 75 mg/d exercise performance by improving metabolism during exercise. There is also evidence that vitamin C may enhance immunity. 162 Summary of Research Findings performance [363,364]. However, there is some evidence that vitamin C supplementation (e.g., 500 mg/d) following intense exercise may decrease the incidence of upper respiratory tract infections [337,365,366]. 163 164 6.21 WADA – PROHIBITED SUBSTANCES AND METHODS IN SPORTS Doping does not necessarily mean that performance is enhanced. The ethics of both sport and medical science are breached when someone dopes. It is important to remember that a doping violation can happen regardless of whether an athlete deliberately uses a prohibited substance, or unknowingly uses a product containing a prohibited substance. The presence of a prohibited substance or evidence of the use of prohibited method in your sample constitutes a doping violation, irrespective of how it got there. The bottom line is that you are responsible for any substance that youingest – it is your responsibility to ensure that any product you take does not contain a prohibited substance. Doping is prohibited to protect your rights to compete on a level playing field without the use of prohibited substances or prohibited methods. There are other reasons to prohibit doping, including the fact that doping can cause: • • Harm to athletes who dope. Most sports carry a certain amount of risk. Many prohibited substances and methods may add serious risks of harm to those that use them. Clean and ethical sport does not require that athletes take unnecessary risks. Harm to athletes who do not dope. Athletes who dope ruin fair sport for all athletes who do not dope. Clean athletes may perceive the need to dope in order to compete with other athletes they suspect are doping. This senseless cycle of doping can bring about personal devastation through health and safety risks, and the destruction of sport. 6.22 Prohibited substances • • • • • • Anabolic agents • Anabolic androgenic steroids (aas) • Other anabolic agents, including but not limited to: Clenbuterol, selective androgen receptor modulators (sarms), tibolone, zeranol, zilpaterol. Hormones and related substances The following substances and their releasing factors, are prohibited: Erythropoietin (epo); Growth hormone (hgh), insulin-like growth factors (e.g. Igf-1), mechano growth factors (mgfs); Gonadotrophins (e.g. Lh, hcg), prohibited in males only; Insulins; Corticotrophins Beta-2 agonists Hormone antagonists and modulators Diuretics and other masking agents 165 • • • • • • 6.23 Stimulants Narcotics Cannabinoids Glucocorticosteroids Alcohol Beta-blockers Prohibited methods • • • • 6.6 Enhancement of oxygen transfer Blood doping, artificially enhancing the uptake, transport or delivery of oxygen Chemical and physical manipulation Gene doping NUTRIENT REQUIREMENTS FOR ATHLETES 6.24 Endurance Athletes Athletes who participate in endurance sports have specific needs because of what they demand from their bodies. For example, athletes lose more electrolytes, such as magnesium, potassium and sodium, through perspiration and must diligently replace them. The wear and tear of intense activity may necessitate increased intake of antioxidants such as vitamin E, which can help protect muscle cells from oxidative damage. Since muscletissue breakdown is common during intense exercise, athletes also need more proteins to repair the tissues. To keep their bodies performing optimally, endurance athletes should be familiar with these 10 important nutrients. • Calcium This may be the most important nutrient for an athlete. In a survey of more than 10,000 male and female athletes ages 7 to 50, fewer than half consumed 1,000 mg of calcium daily. The recommended dietary intake ranges from 1,000 to 1,500 mg/day depending on age and gender. For female athletes, calcium intake is of particular concern. Excessive training (more than seven hours per week) may cause hormonal declines in young girls that can stop menstruation. This hormonal decline also compromises bone formation, possibly leading to premature, irreversible osteoporosis. Recent research shows that male endurance athletes of all ages experience testosterone deficits that also can cause osteoporosis. Athletes should monitor their calcium intake. Dairy foods can supply the required amounts unless sensitivities exclude them from the diet. But a diet without dairy foods requires supplements. All athletes should make sure they get 1,200 to 1,500 mg of calcium daily from food or supplements. Drinking a cup of skim milk, for example, provides about 300 mg of calcium. 166 • Iron For the casual athlete who trains less than four hours per week, iron deficiency is no more of a concern than for a sedentary person. But athletes who train for six or more hours per week often have irondeficiency anemia and should be checked yearly for the condition. Female athletes who are unable to correct such mild anemia through diet can benefit from supplements. Athletes use iron stores more quickly than non-athletes and, considering the neurologic effects of anemia on children and teens who engage in rigorous sports, adequate intake of iron is quite important. The recommended dietary allowance (RDA) for iron ranges from 10 to 15 mg/day—an amount easily acquired from food. In the absence of anemia, athletes shouldn’t take any supplemental iron because it raises the risk of heart disease and colon cancer. • Magnesium This mineral is involved in adenosine triphosphate (ATP) production from fatty acid oxidation, post-contractile muscular relaxation, and bone remineralization. It is also involved in phosphatidylglycerol (DPG) production, which is important to red blood cell formation. ATP, present in all cells but particularly in muscle cells, stores energy. Low magnesium levels can acutely contribute to early fatigue, nausea and muscle cramps. Chronic magnesium deficiencies can lead to increased osteoporosis risk and anemia. Athletes lose magnesium through sweat and urine. This, combined with the fact that athletes’ diets are usually low in magnesium, generally leads to the need for supplementation. Recommended intake for endurance athletes is 500 to 800 mg daily. Higher doses can cause diarrhea. • Potassium This mineral, present in intracellular fluid, is responsible for regulating total body water and stabilizing controlled and automatic muscle contractions. It is also lost through sweat and urine. In a study of athletes running 40 minutes at 21°C, potassium loss was estimated at 435 mg/hour. The rate of potassium loss is approximately 200 mg / kg of weight lost during exercise. Cells release potassium into the bloodstream and serum levels rise with exercise, possibly instigating fatigue. Potassium supplementation after short events (less than two hours), and during and after long events, is warranted. For post-activity replacement, athletes should take about 435 mg/hour of exercise or 200 mg/kg of weight loss. As much as 150 mg/hour during activity can be tolerated by most athletes. Supplement potassium cautiously because too much too quickly can cause cardiac arrest. Supplementing with potassium during training does increase markers 167 of recovery, primarily serum lactate and muscle hydration, but does not aid performance. • Selenium Essential to antioxidant glutathione peroxidase (SeGPx) production, selenium is a free radical-scavenging tripeptide made up of glutamine, cysteine and glycine. It is concentrated in the lining of the GI tract and lungs, in the liver, and in skeletal muscle. In an animal study, reducing muscular SeGPx increased cellular damage from prolonged exercise, supporting the theory that free radical-induced muscle damage causes muscle fatigue. Research shows selenium benefits athletes’ immune function and helps repair cellular damage. Researchers studied the selenium supplementation effects on muscle SeGPx in 24 healthy 168hiamine168em males. Half took 240 mcg of sodium selenite; half took placebo. After cycling to exhaustion—durations ranged from 2.6 to 3.5 hours—the group that took selenium showed less cellular damage. Supplementation with 200 mcg of selenium is safe and warranted for endurance athletes. • Sodium This element helps cells retain water and prevents dehydration. Sodium also enables ATP generation. For events lasting longer than five hours, especially in hot weather, hyponatremia (dangerously low sodium) is a real concern. This especially applies to first-time or slower-running marathoners. Most organized events have aid stations with salty snacks. Anyone out for more than a few hours, especially on a warm day, should make sure to get some salt from snacks and fluid-replacement drinks. A prospective study was performed on 36 athletes during a three- to four-hour triathlon and 64 athletes at an ironman race, which lasts between nine and 15 hours. No athletes were hyponatremic after the shorter race, but 27 percent were hyponatremic following the ironman. An average of 17 percent of the ironman participants required medical attention, most for hyponatremia. Extrapolated from that study, athletes should aim for 80 to 100 mg sodium per quart of hydrating beverage and 100 to 300 mg sodium per hour from other sources. • • Zinc This mineral aids in post-exertion tissue repair and in the conversion of food to fuel. Both male and female athletes have lower serum zinc levels compared with sedentary individuals. Studies correlate endurance exercise with periods of compromised immunity – zinc depletion may be one reason. Those who train without days off lose zinc even more quickly. In a study of cyclists, researchers looked at zinc excretion via sweat. Half of the group underwent intense training for two months. Half 168 underwent moderate training with two to three days off per week. Both groups were studied before and after. The exercising group showed increased zinc excretion while the control group showed no increase. The researchers believe altered zinc metabolism coupled with increased zinc excretion and stress levels lead to fatigue and decreased endurance. Athletes should take 30 to 60 mg zinc daily. Zinc picolinate or monomethionate are most easily tolerated. • Vitamin E For athletes, one of the most important antioxidants is vitamin E. Aerobic athletes may have an increased need for this vitamin because their cells undergo more oxidative damage. Research shows athletes have less cellular damage when they ingest more vitamin E. Aerobic exercise places additional demands on the molecular free radical scavengers of the body, and vitamin E is a well-known scavenger. In a study of 30 top-class cyclists, five months of supplementation with natural vitamin E (alpha-tocopherol) at an 800-IU daily dose significantly decreased markers of oxidative damage to muscle tissue. However, vitamin E did not benefit athletic performance. Studies evaluating vitamin E as an ergogenic, or performance aid, show no benefit. One possible exception is at higher altitudes where oxidative stress is more intense. A group of six mountain climbers took 400 mg synthetic vitamin E (dl-alpha-tocopherol acetate). During exertion at altitude, they showed less output of pentane and lactic acid —both markers of oxidative damage, but not suggestive of improved athletic performance. The athletes also showed a statistically significant increase in anaerobic threshold compared to a placebo group. The amount of vitamin E necessary to benefit athletes is not obtainable through diet. The jury is still out on natural vs. synthetic vitamin E, but endurance athletes should take 400 to 800 IU/day. • Protein The RDA for protein is 60 mg per day for adults (specifically 0.8 g/kg of body weight/day). This recommendation, however, is based on the needs of sedentary individuals. Recent studies indicate that protein needs increase during strenuous activity, which applies to both strength and endurance athletes. Endurance athletes need more protein for different reasons than strength athletes do. Endurance athletes primarily use protein for maintaining aerobic metabolism, compared with the increased tissuerepair needs of strength athletes. When intake is inadequate, the body sequesters the needed proteins from lean tissue, which gives overtrained endurance athletes a gaunt appearance. A protein deficit also impairs an athlete’s recovery and wound-healing ability. 169 Researchers recommend endurance athletes eat 1.2 to 1.4 g/kg of body weight/day of protein. For a 155-pound athlete, this means a total of 85 to 100 g protein per day. Only a few studies recommend protein intake levels as high as 2 g/kg of body weight/day. • Glutamine This amino acid increases the numbers of lymphocytes and macrophages. When glutamine levels are low these immune cells show depressed activity. Prolonged exercise consistently lowers glutamine levels. Glutamine supplementation reduces vulnerability to infections after prolonged exercise, though a few studies examining this phenomenon at lower exercise intensity levels have not shown benefit. Oral glutamine replacement after exercise can lower infection risk. In one study, 200 runners and rowers were given placebo or 2,000 mg glutamine two hours after exercise. In the seven days following the exercise, 81 percent of the glutamine-supplemented group were infection-free compared to 49 percent in the placebo group. A supplement that provides 2 g glutamine daily is wise for athletes in training. Athletes who train strenuously for competition have greater nutritional needs than sedentary people. Adequate nutrients can mean quicker recovery time, lower infection rates, less fatigue, and ultimately, can help athletes reach their desired performance levels. 6.6.2 Strength and Power Athletes In order to build lean muscle mass you need to combine an adequate calorie intake with a solid muscle strengthening program. A large number of calories are needed to fuel both workouts and tissue building. While getting enough calories is important, it is also important to get the right kind of calories. • Carbohydrate Carbohydrate is the predominant energy source for strength training. Stored as glycogen in the muscles, it is the fuel used to supply energy for short, intense bursts of power. The harder and longer you work out, the more glycogen your muscles require. Once these stores of glycogen are gone your energy level will drop and you will run out of fuel to power muscle contractions. For this reason, athletes doing strength training exercise in the hopes of building lean muscle need to have an adequate carbohydrates intake. Experts recommend at least 500 to 600 grams of carbohydrate per day to keep your muscle glycogen stores high. You can base your personal requirement on the following formula: 3.6 g CHO x body wt (lbs) = • Protein 170 grams CHO / day Protein is the basic building material for muscle tissue, and strength trainers need to consume more than the non-exercisers. However, most strength athletes still overestimate their protein needs. Daily protein recommendations for serious strength athletes are about 0.6 to 0.8 grams per pound of body weight. • Fat After you’ve met your carbohydrate and protein needs there is room for fat. Fat is an essential nutrient, however, you require a small amount of it to remain healthy. Less than 30% of your total daily calories should come from unsaturated fat. • Water In addition to the regular eight glasses of water every day, you need to drink to replace fluids that are lost during exercise. To be confident that you are well hydrated before workouts, drink 2 cups of fluid 2 hours before exercise. During your workout, drink 4 to 8 ounces every 15 to 20 minutes. After exercise, replace any further fluid losses with 16 ounces of water. If you want to be precise, you can weigh yourself before and after workouts. For each pound lost during exercise, you should be drink 16 ounces of fluid. • Sports drinks Energy bars and sports drinks may be helpful if exercise lasts longer than 1 hour. Carbohydrate supplements can be useful to help fit adequate carbohydrates into a busy day if you don’t have time to eat a meal. Consuming a meal-replacement beverage just after musclebuilding exercise is convenient but you can do the same thing with a tuna sandwich, a banana, a bagel or other real food snack. You should try to consume some protein and carbohydrate after your workout in order to fuel muscle growth and replenish glycogen stores for your next workout. • Supplements Most supplements that are supposed to help build muscle don’t work. But some, such as creatine, fluid and electrolyte replacers, carbohydrate supplements, and liquid meal replacers may offer some benefits to strength training athletes. Several vitamins and minerals actually work well together in keeping us fit and having stronger muscles. Such vitamins and minerals that contribute to this are potassium, magnesium, calcium and phosphorus which all greatly work together in making sure that our muscles are able to contract smoothly and effectively, as they should. This is, of course, essential to keeping the heart beating in a regular and efficient fashion. It is also important to take note that while the heart is the most important muscle in the body, each and every muscle in a person’s body deserves to be treated with equal importance and care since they work as a group. 171 Vitamin C is highly essential to the health and performance of muscles because it works alongside potassium, magnesium, calcium and phosphorus in their muscle regulation tasks. Vitamin C is also necessary to the formation of collagen and elastin, which are important connective tissues of the body that helps build muscle structure. Vitamin C is also responsible for the well-being of the blood vessels, which support the muscles need for oxygen and nutrients. Naturally, as with most of the important processes and systems of the body, the vitamins that make up the powerful and essential Vitamin B complex have a role in the health and function of the muscles. In fact, deficiencies in the B vitamins can even lead to all sorts of muscle problems, including a lack of muscle coordination. The B vitamins are greatly responsible for the creation of the red blood cells that support the entire body. • 6.7 Creatine When combined with a good diet and strength training program, creatine has the potential to produce slightly more power during workouts. Research has also found that loading creatine into the muscles may help speed up muscle gain. While many creatine supplements are available at a price, meat is the best dietary source of creatine. Typical dose for creatine loading is 5 grams of creatine monohydrate four times per day for 5 days. A maintenance dose of 2 grams per day can follow. Taking more than the usual dosage of creatine offers no added benefit. Also, users should be aware that creatine and other popular supplements are subject to little government regulation, so there is no guarantee that they are pure. NUTRITION TACTICS 6.7.1 Power sports Different activities place special metabolic requirements on muscle systems, and these differences alter the nutrition requirements among athletes involved in various types of sports. Sports that require a high level of power and speed over short distances have a high anaerobic component. Athletes in these sports are not interested in their ability to move efficiently over long distances for long periods of time; they want to be there first in short distances. When a baseball player steals a base, there is virtually nothing about that 4- to 5-second experience that requires aerobic efficiency. The sprint to the next base is entirely dependent on anaerobic metabolism, which is almost entirely dependent on phosphocreatine and glycogen as fuels. Bodybuilders need explosive power to train but almost never place continuous stress on the muscles for longer than 1.5 minutes, which is the approximate time limit for anaerobic activities. There has been an evolution in the way athletes eat to support top athletic performance. Around AD 200, Diogenes Laertius wrote that the training diet of 172 Greek athletes of the time consisted of dried figs, moist cheeses, and wheat products. American Olympians at the Berlin Games of 1936 had a daily intake that included beefsteak, lots of butter, three eggs, custard, 1.5 liters of milk, and as much as they could consume of white bread, dinner rolls, fresh vegetables, and salads. With each successive Olympic Games, athletes have consumed certain foods and avoided other foods depending on the state of nutrition knowledge. Since the 1960s, however, there has been a purposeful scientific effort to learn what athletes need and why they need it. This scientific 173hiamine173 has led to a much-improved understanding of how muscles work for power and how they work for speed. The science of sports nutrition has also helped us understand the different nutrition demands associated with different types of activities. A failure to consider the nutrition implications of the activity will most certainly lead to problems in training and to performance outcomes that are below the capabilities of the athlete. Our current knowledge of nutrition requirements for anaerobic activity is substantial, with the clear understanding of what it is that muscles use in this type of activity: phosphocreatine and glycogen. Of course, there is also a question of how to obtain and sustain the larger muscle mass typically needed by athletes involved in anaerobic activity, and the answer to this question is also known: more calories. However, despite the well-established nature of these facts, anaerobic athletes place an unyielding focus on protein intake to satisfy the phosphocreatine, glycogen, and muscle requirements of their activities. • Anaerobic Metabolic Pathways Athletes have the capacity to obtain a limited amount of energy quickly without oxygen. Events that are predominantly anaerobic (i.e., they require maximal power and energy over a limited period of time) rarely last longer than 90 seconds because the anaerobic energy supply would be exhausted. In some anaerobic events, such as boxing, each round is followed by a period of rest to allow the cells to prepare for the next bout of intense work. What follows is a description of the anaerobic metabolic pathways. • Phosphocreatine (Phosphagen) System Anaerobic metabolic processes supply ATP from phosphocreatine (PCr) and glycolysis without oxygen. The in-muscle concentration of preformed ATP is 25 to 33 percent of the concentration of PCr. The enzyme creatine kinase can break apart PCr into inorganic phosphate and creatine, with a resultant release of energy. The free inorganic phosphate is united with ADP to reform ATP. The breakdown of PCr is not reversible until energy is obtained from other sources (mainly through oxidative metabolic processes). The volume of energy that can be supplied by the breakdown of PCr is vast, and it can be produced instantaneously. However, the length of time that this high volume of energy can be supplied is never greater than 10 seconds because of the limited amount of PCr stored in tissue. The formation of energy from PCr breakdown is directly linked to the intensity of exercise: The higher the exercise intensity, the greater the 173 reliance on PCr breakdown as a source of energy. Athletes performing maximal exercise for 8 to 10 seconds (sprint, vault, jumps) must take a break of 2 to 4 minutes to allow for the regeneration of PCr before undertaking another maximal bout of exercise. Creatine monohydrate supplementation is popular because athletes want to increase the storage of PCr, with the hope of increasing both capacity and power. • Glycolysis (Glycolytic System) Glycolysis refers to the anaerobic breakdown of glucose or glycogen for energy. There is a delay of 5 to 10 seconds after the initiation of activity before the glycolytic system can supply energy to working tissues. The six-carbon glucose molecule is phosphorylated and broken into two threecarbon molecules (glyceraldehydes-3-phosphate, or G3P). Each molecule of G3P is converted into pyruvate with the formation of ATP. The glycolytic reaction creates two molecules of ATP for each molecule of glucose; it creates three molecules of ATP for each molecule of glucose if glycogen is the initial substrate. The pyruvate may be converted to acetylCoA for later storage as fat or conversion to lactate. In either case, the fat or lactate created from pyruvate can be oxidative sources of energy. Glycolysis has half the power to create energy as the PCr system but has three times the capacity. The combination of PCr and glycolysis can support predominantly anaerobic maximal work for approximately 90 seconds, often referred to as the anaerobic maximum 6.25 Endurance sports Endurance events such as road cycling, long-distance swimming, marathon, triathlon, and 10K run all require a high level of endurance and place a relatively low premium on anaerobic power. These events force competitors to perform at the margin of their maximal aerobic capabilities over long distances. As training, nutrition, and selection of athletes in endurance sports improve, records continue to fall. This suggests that doing the right things can and will result in moving the known envelope of speed in endurance events. The winner of the marathon at the Atlanta Olympic Games in 1996 won with an average running pace of slightly under a 5-minute mile, a feat that is not commonly achieved. Despite this incredible speed, the athlete had to maintain this pace at a level that allowed a sufficient oxygen uptake to sustain, primarily, aerobic muscular metabolism. That is, the majority of all muscular work took place with fuel being burned in the presence of oxygen. This is an efficient means of obtaining energy, allowing the athlete to sustain muscular work for long periods of time. Aerobic training does some wonderful things to the athlete’s ability to use oxygen. The intermediary (type Iia) fibers, which tend to behave more like fasttwitch (power) fibers than slow-twitch (endurance) fibers, dramatically increase in mitochondrial content and the in enzymes involved in oxidative metabolism. The training impact on oxygen usage is well known. In studies looking at blood lactate than are untrained subjects doing the same intensity of work. The conversion of 174 the 175hiamine175 of the intermediary fibers results in an improvement in the athlete’s aerobic endurance. The increased ability to use oxygen results in an improvement in the ability to burn fat as a primary fuel, reducing the reliance on carbohydrates. Since even the leanest athletes have a great deal of energy stored as fat, this increased ability to burn fat dramatically improves endurance. However, since carbohydrate is needed for the complete combustion of fat, carbohydrate is still the limiting energy source for endurance work because athletes have relatively low carbohydrate stores. This is clearly demonstrated by findings that athletes consuming a high-fat diet have a maximal endurance time of 57 minutes; on a normal mixed diet their endurance rises to 114 minutes; and on a highcarbohydrate diet, their maximal endurance rises to 167 minutes. Of the energy stores available to us, fat is the most efficiently stored and provides the greatest mass from which we can derive ATP energy. Glycogen requires approximately 3 grams of water for storage, while fat storage is essentially anhydrous, making fat a more efficient form of energy storage. Muscle and liver glycogen stores represent a small fraction of the energy in fat stores but have the advantage of being able to be metabolized either anaerobically or aerobically, while fat can only be metabolized aerobically. Protein stores are from functional tissues that, under ideal conditions, would never be catabolized as a source of energy. Nevertheless, a small amount of protein (approximately 5 percent of total energy needs) does appear to be metabolized to meet energy requirements in most activities. In the absence of carbohydrate, protein stores are catabolized at a faster rate to provide a source of glucose (the amino acid alanine can be converted to glucose by the liver) and a source of acetyl-CoA and oxidative metabolism. However, this protein catabolism is not desirable and can be avoided with a regular supply of carbohydrates and adequate total energy consumption. At the initiation of exercise, the majority of ATP is derived anaerobically. For highly intense, maximal-effort activities, the requirement for a high volume of energy mandates a continuous dependence on anaerobic processes. However, for lower-intensity activities the majority of ATP is initially provided anaerobically, but then the activity switches to aerobic metabolism to meet most ATP needs. Anaerobic and aerobic metabolic processes should be thought of as proceeding simultaneously, with the intensity of the activity determining the predominant metabolic pathway for the supply of ATP. High-intensity, maximal-effort activities rely more on anaerobic metabolism, while lower-intensity activities rely more on aerobic metabolism. Because far more energy is available to us aerobically (fat can only be metabolized aerobically), the high energy needs of endurance athletes force them to train muscles to be more aerobically competent. Cells of well-trained aerobic athletes have more mitochondria and more aerobic enzymes in the mitochondria, resulting in a higher capacity to derive energy aerobically. 6.26 Sports requiring power and endurance Team sports such as basketball, volleyball, rugby, team handball, and soccer all have combinations of high-intensity and lower-intensity activity interspersed 175 throughout the competition. The mixed intensity of certain individual sports, such as figure skating and tennis, may also fall into this category. This differs from other sports, where the focus is either predominantly endurance or predominantly power or speed. There is nothing in artistic gymnastics training or competition that requires, for instance, a great deal of aerobic endurance; and marathon runners rarely require the explosive power exhibited by gymnasts. Team sport athletes must focus on speed, power,andendurance. Soccer players must run the field at a controlled pace until a sudden opening requires a quick burst of speed. Basketball players may jog back and forth in a steady aerobic pace, but each player must have the capacity for a powerful jump to grab a rebound or for a quick sprint to make a defensive play. The intermittent high and low intensity of team sports creates a requirement for energy that is derived from a combination of aerobic and anaerobic means. Although the anaerobic metabolic processes are solely reliant on existing stores of ATP, phosphocreatine (PCr), and muscle glycogen, the aerobic processes derive energy from muscle glycogen, blood glucose, fat, and to a lesser extent, protein. There is a heavy reliance on muscle glycogen for the majority of muscle energy during team sport activity, with nearly an equal reliance on fat and blood glucose for most of the remaining source of energy. Fat is almost never in short supply. However, the amount of glucose energy in blood is small and requires constant vigilance by the athlete to ensure a continuing source of glucose during the competition. The heavy reliance on muscle glycogen and blood glucose to 176hiami the energy needs of working muscles demands a high level of consumed carbohydrates before exercise and carbohydrate-containing sports beverages during exercise. In a study of the performance outcomes of a moderate (39 percent of total calories) versus high (65 percent of total calories) carbohydrate intake, the higher-carbohydrate diet significantly improved intermittent exercise performance. Repeated sprint work is enhanced by consumption of a carbohydrate-electrolyte beverage. Although it has been long established that consumption of a carbohydrate-electrolyte beverage enhances submaximal endurance performance, only recent studies have clearly shown the benefits of these beverages during high-intensity, short-duration efforts such as those found in football and basketball. Subjects performed seven additional 1-minute cycling sprints at 120 to 130 percent of peak VO2when they consumed a 6 percent carbohydrate-electrolyte beverage, as compared with a water placebo. This finding suggests that a dramatic improvement in sprint capability during the last 5 to 10 minutes of a basketball game is possible if players methodically consume a sports beverage. A similar study determined that sports drinks (i.e., carbohydrate-electrolyte beverages) can help maintain high-intensity efforts during high-intensity activities consisting of intermittent sprinting, running, and jogging. Again, these findings have strong positive implications for sustaining high-intensity activity over the course of a typical basketball or soccer game. 176 The effects of consumption of the individual components of a sports beverage (electrolytes, water, or carbohydrate) and of the combination of all components have also been assessed. Compared with the electrolyte-only trial, performance during the water-only and carbohydrate-only trials was approximately 6 percent faster. However, the combination of carbohydrate and water caused a performance enhancement that was approximately 12 percent faster than the electrolyte trial and 5 to 6 percent faster than when water only or carbohydrate only were consumed. These findings support the thesis that carbohydrate enhances water absorption and that the limited carbohydrate storage mandates consumption of carbohydrate during exercise. The high demands on circulating and stored carbohydrate during high-intensity work require a constant vigilance to ensure proper and speedy replacement. This study was based on earlier work that showed exercise performance improved significantly with carbohydrate feedings. It has also been found that the optimal level of carbohydrate concentration during exercise is 6 to 7 percent. This concentration is best for fluid absorption and also helps to efficiently deliver carbohydrate. An 8 percent carbohydrate solution causes a slower fluid absorption. A basketball player leaping for the ball and a soccer player sprinting toward the ball and jumping high to kick it are activities comparable to certain forms of strength training. A study of resistance-trained athletes found that athletes tended to perform more repetitions of the same weight when carbohydrate was consumed versus a water placebo. Blood glucose and lactate concentrations were higher with the carbohydrate trial, suggesting that more carbohydrate was available and used to sustain the high-intensity exercise. A study of head-to-head comparisons of Gatorade, Powerade, and All Sport found that Gatorade stimulates fluid absorption faster than either Powerade or All Sport. This difference can be attributed to both the type of carbohydrate and the concentration of carbohydrate in the beverages. Gatorade has a carbohydrate concentration level that is consistent with the positive findings in virtually all the studies (6 percent) and contains an equal mixture of sucrose and glucose. Powerade and All Sport have higher carbohydrate concentrations, mainly from fructose. Fructose has been shown to cause gastrointestinal (GI) distress; it is also less efficient in sustaining blood glucose because it requires a secondary conversion in the liver after absorption. Athletes who perform repeated or sustained high-power efforts experience a reduction in performance when they are dehydrated. A 6 percent carbohydrate solution aids in fluid delivery, a fact that should be considered when team sport athletes select rehydration beverage. Several general nutrition guidelines-covering what to do before, during, and after exercise and competition-are important for virtually all athletes involved in sports that have intermittent periods of maximal intensity. The two keys to these guidelines are fluids and carbohydrates in the context of a generally varied diet. Athletes should explore workable strategies to consume both fluids and carbohydrates at every opportunity. Recent findings tend to contradict the traditional and commonly followed belief that carbohydratecontaining beverages are useful only for endurance (aerobic) activities lasting 177 longer than 60 minutes. The best predictors of athletic performance are maintenance of blood volume and maintenance of glycogen and glucose. What follows are some strategies that might be useful for achieving both enhanced hydration and improved maintenance of system carbohydrate in different sports. 6.8 NUTRITIONAL ISSUES AND CHALLENGES 6.8.1 Athlete travel The pitfalls of travel can undermine the best your training has to offer. The stress of travelling, jet lag, adapting to new surroundings, and gastrointestinal illness are all factors that can affect how well you’ll be able to perform once you reach your destination. Knowing what to expect when travelling and planning for the challenges you’ll face can make big differences in your performance. Frequent travel can pose a number of challenges: • • • Disruptions to the normal training routine and lifestyle while the athlete is en route Changes in climate and environment that create different nutritional needs Jet lag 178 • • • • • • Changes to food availability including absence of important and familiar foods Reliance on hotels, restaurants and takeaways instead of home cooking Exposure to new foods and eating cultures Temptations of an “all you can eat” dining hall in an Athletes’ Village Risk of gastrointestinal illnesses due to exposure to food and water with poor hygiene standards Excitement and distraction of a new environment The keys to eating well while hiamine are: • • • • • • • • • • • Planning ahead Investigate food patterns and availability at your destination before you leave home. This may help you to plan useful food supplies to take on your travels that can replace missing and important items. Contact the catering 179hiamine179e at your destination to let them know of your needs for meal timing and menus. Make an eating plan for travel that incorporates the best of the available food supplies (e.g. airline catering, restaurants en route) as well as selfsupplied snacks. Eat and drink well while on the move Recognise that enforced rest while traveling will reduce energy needs, but create more opportunities for high energy intake if the athlete succumbs to “boredom eating”. Be aware of eating to real need. When moving to a new time zone, adopt eating patterns that suit your destination as soon as the trip starts. This will help to adapt your body clock. Be aware of unseen fluid losses in air conditioned vehicles and pressurized plane cabins. Have a drink plan that keeps you well hydrated. Be wary of food and water hygiene. Find out whether it is safe to drink the local water supply. If risky, stick to sealed bottles of water and other drinks or hot drinks. Be wary of ice added to drinks – it is often made from tap water. In high-risk environments stick to food produced in good hotels or well-known restaurants. Avoid eating food from local stalls and markets, however tempting it is to have an “authentic cultural experience”. Stick to food that has been well-cooked, and avoid salads or unpeeled fruit that has been in contact with local water or soil. Choose well from local cuisine and supplement with non-perishable food supplies brought from home Use clever tactics in restaurants, all you can eat dining halls and when choosing takeaways. Stick to an eating plan based on what is normally eaten at home, or what meets new nutritional needs, rather than being mesmerized by all the food on offer. Be assertive in asking for foods to be prepared to your needs – for example, with low fat cooking methods, or with an added carbohydrate serving. Avoid hanging around in restaurants or dining halls for entertainment – it can often lead to unplanned and unnecessary eating. Taking a probiotic supplement may help. Probiotic supplements contain 179 healthy microbes that live naturally and peacefully in your digestive tract. Taking a supplementary dose of the beneficial microbes may help to ward off the pathogenic ones Remember that your normal eating patterns probably involve well-timed and wellchosen snacks. If your new catering arrangements provide only for main meals, ensure that the menu at meals includes some items that can be taken away for snack needs. 6.8.2 High altitude The challenges of performing physical work at high altitude are daunting, but nutrition strategies can help people attain their goals in this environment, whether it’s a 3-day (4,390 meter climb up Mount Rainier or a week-long trek up the 5,890 meter Mount Kilimanjaro. This topic reviews the physiological and nutritional stresses the human body experiences when working in the often cold setting of a high altitude and presents recommendations for successfully dealing with this environment. • Meeting energy and nutrient needs Energy expenditures of humans climbing Mount Everest average 2.5 to 3.0 times higher than at sea level. It is easy to understand why weight loss from reduced energy intake is a common outcome of exercise in cold or high-altitude environments. Athletes performing in these environments should make a conscious effort to eat at frequent intervals. They should focus on carbohydrate foods because these foods take less oxygen to metabolize than do fat or protein foods, help replace glycogen stores, and have a protein-sparing effect. In addition, inadequate carbohydrate consumption will eventually result in low blood sugar, which leads to mental confusion and disorientation. Some reports indicate that mountaineers show a preference for carbohydrates and an aversion to fat. However, this finding is not consistent; other studies indicate that athletes at high altitude do not shift their food selections away from high-fat items and toward high-carbohydrate foods. The same report indicates that high-altitude environments blunt the sense of taste, which may contribute to inadequate energy intake. This inadequate energy intake leads to a weight loss (including muscle weight) that negatively affects strength, endurance, and the capacity to produce heat. The goal should therefore be to consume an adequate volume of food to provide sufficient calories rather than place undo importance on the distribution of energy substrates. Athletes should have foods available to them that they know they will eat in large quantities and that make them feel good after they are consumed. To make matters even more difficult, the time to cook a meal doubles for each 5,000-feet (1,500 meter) climb in elevation. Pre-packaged, highcarbohydrate snacks and foods are a good alternative for most meals, with cooked meals reserved for those times when athletes have available water and time. The intake of vitamins and minerals is something better considered before exposure to either cold or high altitude. Iron status in particular should be excellent before attempting a high-altitude trek because oxygen-carrying capacity is stretched to its limit in this environment. Taking iron supplements while on the 180 climb is not likely to be of much benefit because it takes a great deal of time (months) to improve a poor iron status. Oxidative stress may be higher in hot and cold environments, so consumption of foods that contain antioxidants or periodic consumption of a multivitamin and multi-mineral supplement should be considered. A study of oxidative stress in humans at high altitude found that those receiving an antioxidant mixture had lower breath pentane (a marker of oxidative stress) compared with those receiving single antioxidant supplements. Consuming a variety of antioxidants, such as ascorbic acid, beta-carotene, selenium, and vitamin E (as would be present in a broad-spectrum supplement), is therefore likely a better strategy than focusing on a single antioxidant. • Meeting fluid needs Consuming sufficient fluids in cold and high-altitude environments presents unique challenges, all of which must be overcome to ensure an adequate hydration state. These factors include providing adequate availability of drinking fluids, avoiding the freezing of drinking fluids, and overcoming voluntary dehydration. The basic strategy is for each person to ensure an availability of a minimum of 2 liters of fluids and preferably 4 liters of fluids per day. The 2 liters is truly a minimum because hard physical work in a cold, high-altitude environment may result in 2 liters of water loss per hour.. Using melted snow or ice as the source of fluids is not a reasonable planning option; melting snow and ice at high altitude takes a great deal of time and adds significant weight in fuel, pots, and stoves. In addition, it is possible that the available ice and snow is impure and not fit for consumption. It has been reported that Giardia lamblia, a diarrhea- causing intestinal parasite, is present in high-altitude regions. Of course, in emergency situations any available fluids should be consumed, but the risk of infection is present if purification devices are not used. A unique strategy for keeping fluids from freezing is to add glycerol, which may improve fluid retention, adds calories to fluids, and reduces the freezing point. The last characteristic of glycerol is rarely considered, but for the athlete working in a cold environment, it is extremely important. The added calories are also an important benefit of glycerol because both cold-weather and high- • Overcoming voluntary dehydration When left to their own devices, athletes typically consume less fluid while exercising than is needed to sustain an optimal hydration state. This condition, termed voluntary dehydration, may be an even greater problem when athletes exercise in the cold than when they exercise in the heat. The basis for this remains unclear, but two theories, one physiological and one practical, have been suggested as the possible cause. There is a possibility that cold skin or lower core body temperature modifies the thirst sensation and the voluntary restriction of fluids seems to occur most often late in the day, an act that blunts the necessity for an athlete to leave a warm tent to urinate in a cold and unfriendly environment during the night. The only reasonable solution to avoid voluntary dehydration is for athletes to place themselves on a fixed drinking schedule, whether or not the sensation of thirst exists. Having small sips of fluids at regular intervals also eliminates the need to consume a large volume of fluid at one time, which may stimulate the need to urinate. 181 6.8.3 Hot and humid environments The risks of dehydration and heat injury increase dramatically in hot, humid environments. If the ambient temperature exceeds body temperature, heat cannot be dissipated by radiation. Moreover, if the relative humidity is high, the potential to dissipate heat by evaporation of sweat is substantially reduced – at a relative humidity of 100%, vaporization of sweat does not occur. Instead, in humid environments, sweat drips from the body, leading to non-functional fluid loss. When temperature and humidity are both high, there is a very high risk of heat illness, and competitive events should be postponed, rescheduled, or cancelled. If competitive events do occur under these conditions nutritional strategies play an important role in assisting an athlete to perform as well as possible in a hot environment. A key issue is the prevention of hypohydration during an exercise session. Fluid intake strategies should be undertaken in a cyclical sequence: hydrate well prior to the workout, drink as much as is comfortable and practical during the session, and rehydrate aggressively afterwards in preparation for future exercise bouts. There is some interest in hyperhydration strategies, such as hyperhydration with glycerol, to prepare the athlete for a situation where there is little opportunity for fluid intake to match large sweat losses. Recovery of significant fluid losses after exercise is assisted by the simultaneous replacement of electrolyte losses. Carbohydrate requirements for exercise are increased in the heat, due to a shift in substrate utilization towards carbohydrate oxidation. Daily food patterns should focus on replacing glycogen stores after exercise, and competition strategies should include activities to enhance carbohydrate availability, such as carbohydrate loading for endurance events, pre-event carbohydrate intake, and intake of sports drinks in events lasting longer than 60 min. Although carbohydrate ingestion may not enhance the performance of all events undertaken in hot weather, there are no disadvantages to the consumption of beverages containing 4-8% carbohydrate and electrolytes. In fact, the palatability of these drinks may enhance the voluntary intake of fluid. Although there is some evidence of increased protein catabolism and cellular damage due to production of oxygen radicals during exercise in the heat, there is insufficient evidence to make specific dietary recommendations to account for these issues. 6.27 Cold environments Athletes who participate in cold weather activities have a variety of special needs when it comes to performing at an optimal level while staying comfortable and safe as temperatures drop. But how you fuel your exercise in the cold can also help you perform your best and stay comfortable and safe. Proper nutrition can help regulate your core temperature, and keep your body warm while fuelling your muscles. In the summer it’s easy to sweat to 182 regulate your temperature and remove excess heat. In cold weather, you need this heat to stay warm. In the cold weather your body temperature normally drops. Your metabolism increases to warm and humidify the air you breathe and you tend to burn slightly more calories to stay warm. Breathing in cold, dry air forces your body to warm and humidify that air and with each exhalation, you lose significant amounts of water. Athletes training and competing in cold environments need to consciously drink more fluids to replace the water that gets lost via respiration. Add this to a decreased desire to drink (the thirst mechanism is reduced in cold weather) and the difficulty of removing multiple layers of clothing to urinate may cause some athletes, especially women, to voluntarily limit their fluid intake. Dehydration is one of the main reasons for reduced performance in the cold. When it comes to eating during cold weather exercise, warm foods are ideal, but not very practical. The problem with cold foods and fluids is that they can chill the body. In summer, this cooling effect is helpful during exercise, but in winter hot foods are the better choice. Ideal foods are complex carbohydrates consumed 2 hours prior to exercise. Soups, chilli, bread, bagels, pasta with tomato sauce baked potatoes, cereals; peanut butter, lean meat, and low-fat cheese are good choices. It’s also important to eat continually to replace carbohydrate stores that are being used for exercise and warming. If you don’t replace this energy you will likely feel more fatigued and chilled. • • • • • • • 6.8.5 Recommendations for Cold Weather Nutrition Drink plenty of water Eat a variety of high carbohydrates foods Plan to eat a small snack every 30-45 minutes (100-200 calories) Eat warm or hot food when possible Decrease caffeine consumption Don’t drink alcohol. Alcohol dilates the blood vessels and increases heat loss. The vegetarian athlete Some athletes choose to follow vegetarian diets. Nutrition recommendations for these athletes should be formulated with consideration of the effects of both vegetarianism and exercise. The position of the American Dietetic Association on vegetarian diets provides appropriate dietary guidance that should be considered in conjunction with the information provided herein. Vegetarianism does not necessarily affect energy needs, though energy availability could be reduced slightly if a vegetarian has an extremely high fiber intake. As with all athletes, monitoring body weight and composition is the preferred means of determining if energy needs are satisfied. Some 183 people, especially women, may switch to vegetarianism as a means of restricting energy intake to attain the lean body habitus favored in some sports. Occasionally, this may be a step toward development of an eating disorder. Because of this association, coaches and trainers should be alert when an athlete becomes vegetarian, and ensure that appropriate weight is maintained. Studies consistently report that vegetarians have lower protein intakes than omnivores. Although the protein quality of a vegetarian diet is adequate for adults plant proteins are not as well-digested as animal proteins. Thus, to adjust for incomplete digestion, an increase of about 10% in the amount consumed may be made. Accordingly, recommended protein intakes for vegetarian athletes would be about 1.3 to 1.8 g/kg body weight, using recommendations for athletes as a baseline. Vegetarian athletes with relatively low energy intakes may need to choose foods carefully to ensure that their protein intakes are consistent with these recommendations. Vegetarian athletes may be at risk for low intakes of vitamins B12 and D, riboflavin, iron, calcium, and zinc, because many of these nutrients are high in animal products. Iron is a nutrient that may be of particular concern to vegetarian athletes. Because of the lower bioavailability of iron in plant-based diets, the iron stores in vegetarians are generally lower than those of omnivores, despite total iron intakes that are similar or even higher. When combined with data indicating that exercise may increase iron requirements, it is possible that vegetarian athletes, especially women, may be at greater risk of developing poor iron status. Accordingly, it would be prudent for iron status to be monitored routinely in female vegetarian athletes. Some foods contain substances that block the absorption of iron in the intestine. Coffee, whole grains, bran, legumes, and spinach all interfere with iron absorption and should be combined with vitamin C to increase iron absorption. 6.28 Weight control and energy needs An athlete’s daily energy intake provides for immediate energy needs (body functions, activity and growth) as well as influencing body energy stores. Energy stores play a number of important roles related to exercise performance, since they contribute to size and physique (e.g. body fat and muscle mass), function (e.g. muscle mass) and fuel for exercise (e.g. muscle and liver carbohydrate). Many athletes try to manipulate these factors towards the characteristics that offer advantages to their sport. In most cases, the goals are to change body weight, reduce body fat, increase muscle mass and optimize important fuel stores. Problems can occur when: • the athlete is unable to identify goals that are both suitable for their sport, and for their individual make-up 184 • • the athlete is unable to monitor the separate components of their goals (for example, to distinguish changes in body fat from changes in total body weight, or to see whether total energy intake provides for optimal store of body fuels) the athlete restricts energy intake to the level that interferes with the body’s metabolic and hormonal function Strategies for managing energy intake and energy balance: • The athlete should individually manage their energy stores of body fat, carbohydrate (muscle fuel) and protein (muscle mass) by managing intake and expenditure of these nutrients separately. • The athlete should eat to a plan that achieves their specific goals rather than relying on appetite to guide energy intake. Advice from a sports nutrition expert is often required to develop this plan. • The athlete should have a number of separate bio-markers to monitor their progress in achieving each of their energy related goals. • Body weight is not a reliable or accurate indicator of energy balance. Monitoring body weight is often a stressful activity for athletes, especially when the information is misinterpreted or the outcome is manipulated. • Serial monitoring of skinfold fat thicknesses, especially when undertaken by a trained kinanthropometrist, can provide useful information about changes in body fat stores • Urinary ketones can provide a marker of inadequate carbohydrate intake • Measurements of changes in muscle strength and endurance provide a useful biomarker of muscle development Although many athletes reduce their energy intake to assist with the loss of body weight and body fat, it is harmful to restrict energy intake below levels that interfere with healthy body function. There is good evidence from recent research that when energy availability drops below a daily intake of 30 kcal (135 Kj) per kg fat-free mass (FFM), there are substantial impairments of metabolic and hormonal function, which affect performance, growth and health. In females, one outcome of low energy availability is a disturbance of reproductive function and menstrual regularity. Other problems are likely to occur in male athletes. Example of low energy availability: • 60 kg female with 20% body fat = 48kg FFM • Daily energy intake is restricted to1800 kcal (7560 Kj) • Cost of daily exercise (1 h/d) =500 kcal (2100 Kj) • Energy availability = 1800-500 =1300 kcal (5460 Kj) • Energy availability = 1300/48 or27 kcal/kg FFM (113 Kj per kg FFM) Strategies for staying lean and trim: • Assess portion sizes at meals to ensure that over-eating does not occur due to habit or unnecessary hunger • Use well-chosen snacks between meals to maintain fuel levels for training sessions or to avoid excessive hunger. However, avoid snacking for entertainment or comfort. Snacks can often be organized by saving part of a meal for a later occasions, rather than by eating extra food. • Use low-fat strategies in choosing foods and while cooking or preparing meals 185 • • Make meals and snacks more “filling” by including plenty of salads and vegetables, by taking the higher-fiber option, and by including low glycemic forms of carbohydrate. A food record will help to identify the difference between an athlete’s desired eating plan, and their actual intake. Many people are unaware of the habits that sabotage their eating goals Examples of incorporating low glycemic index carbohydrate foods into meals: • Enjoy rolled oats instead of Cornflakes for breakfast • Replace white and wholemeal breads with wholegrain and multi-grain choices • Add lentils and legumes to casseroles and pasta sauces • Enjoy flavoured yoghurt as a snack 6.29 Special needs for weight conscious sports The key nutritional interest of many athletes is to reduce body weight and body fat. A low level of body weight and body fat often provides a benefit to performance. In other sports involving subjective outcomes (e.g. gymnastics, diving, body building), the athlete who is lean and trim is judged to have a higher aesthetic appeal. Although certain body shapes and physiques are held up as “de rigueur” for many sports, each athlete must be realistic in setting targets for the weight and fat loss programs they undertake. Challenges occur for the athlete whose training does not involve high energy expenditure work – for example, the athlete who undertakes lengthy training sessions that are primarily based on skill and agility. It is more difficult to create the energy deficit needed to reduce weight and body fat when basal energy needs are low to moderate. Restrictive eating and fad diets can lead to dehydration and fuel depletion, marring training performance and increasing the risk of injury and accidents, rather than achieving effective loss of body fat. In many combat sports (boxing, wrestling, martial arts), some strength sports (weight lifting) and lightweight rowing, competition involves weight divisions that attempt to provide a match between athletes of equal size and performance. In such sports, athletes typically try to lose weight in the days before the competition (and its pre-event weigh in), in order to qualify for a weight division that is lighter than their habitual body weight and gain an advantage over a smaller opponent. Acute strategies to “make weight” expose the athlete to health and performance risks arising from dehydration, fuel depletion, inadequate nutrient intake, and psychological stress. Athletes will benefit from professional advice from an expert such as a sports dietitian to set realistic goals for weight and fat loss attempts, and a suitable long-term eating plan. The athlete in skill-based sports should seek their coach’s input to introduce or increase aerobic workouts that can increase overall energy expenditure without detriment to key training sessions. This may include changes to lifestyle to increase incidental exercise or activity in 186 the day. Athletes who compete in weight division sports should settle for a weight category that is close to the training weight that can be achieved with a safe and healthy plan. Final “fine tuning” of weight prior to the event should not involve changes of >1-2% body weight, and should be undertaken without resort to extreme techniques of dehydration and fasting. Athletes in weight conscious sports may be at higher risk of disordered eating and eating disorders than other athletes or the sedentary population. It is important that athletes who develop warning signs of such problems are refereed at an early stage for expert team-based advice. 6.30 Diabetics and sports nutrition Diabetes is caused by a deficiency (Type I) or a malfunctioning (Type II) of insulin (a hormone produced by the pancreas). Without insulin, glucose cannot enter cells and stays in the bloodstream. Type I diabetes is treated with insulin injections that help make cells receptive to glucose. Type II Diabetes can be controlled with adjustments in diet and exercise. Diabetic athletes routinely compete in athletic events from Iron Man triathlons to professional football. With proper control and some basic routines, athletes with diabetes can compete at the same intensity as anyone. New insulin pumps and blood glucose monitoring devices make it easier for athletes to monitor their response to exercise. While diabetes can be managed, there are risks that require planning for training or competition. It’s important to consult your doctor before starting an exercise program, so a complete risk assessment can be performed and a safe training and competition schedule can be designed. Because exercise lowers the blood sugar levels and helps improve the body’s use of insulin, an athlete often needs to reduce the insulin dose before exercise. Exercise also increases the blood flow to the skin and muscle tissue, and increases the amount of insulin in the blood stream and stimulates the liver to release glucose into the blood. It is important to reduce the level of glucose in the blood prior to beginning exercise. Diabetics should maintain a good balance of blood sugar (between 70 and 180 mg) during physical activity. Athletic performance is reduced if this balance is off. Too much insulin can lead to hypoglycemia and too little may cause hyperglycemia. Because some of the symptoms of the two conditions may look like normal reactions to exercise (sweating and paleness), it is important that a diabetic athlete (or a coach) is aware of the following symptoms. Symptoms of low blood sugar (hypoglycemia): • decreased physical performance • variable mood • paleness • tremor • headache 187 • • • • • sweat poor vision fatigue hunger dizziness The onset of low blood sugar can be prevented by eating or drinking food high in carbohydrates. Extreme 188hiamine188emia may result in severe reactions such as the inability to swallow or unconsciousness. In this case, a physician or paramedic can inject 188hiamine188, which is a hormone that releases glucose from the liver into the blood stream. After receiving 188hiamine188, the person should soon regain consciousness. Symptoms of high blood sugar (hyperglycemia): • sleepiness • dry mouth • frequent urination • fatigue • extreme thirst Safety tips for diabetic athletes: • Check your blood sugar levels before, after and every 20 to 30 minutes during prolonged exercise. • If blood sugar is under 100 mg/Dl, eat grams of carbohydrate before you exercise. • If blood sugar is excessive (over 250 mg/Dl for type 2 diabetes or over 200 mg/Dl for type 1, postpone exercise until you bring it down. • Know the signs of 188hiamine188emia and be prepared with available snacks. • Exercise 1 to 2 hours after a meal. • Avoid exercise at times of peak insulin activity. Morning exercise is ideal. People who have type 1 diabetes should avoid evening exercise, if possible. • Adjust your insulin dosage, if necessary. (Follow your doctor’s advice, but this usually means reducing the dose of short-acting insulin before exercise.) • After prolonged or intense exercise, you may need extra carbohydrate foods for up to 24 hours to refill muscle starch reserves. Beware of delayed 188hiamine188emia. • Drink plenty of fluids: about a pint 2 hours before exercise, and drink after exercise to replace fluids lost in sweat. • Pay attention to your feet. Wear proper shoes and socks. • Avoid alcohol around the time of exercise (even the night before a morning workout). • Wear an ID band of some sort in case of emergency. • Pay attention to your body, and become aware of your own pattern of blood-glucose response to exercise. 6.31 Eating disorders and sports performance 188 Although many athletes initially experience an improvement in sports performance with weight loss, this improvement is generally short lived if it was due to a drastic reduction in food intake. A major decrease in food consumption depletes energy and can be indicative of an eating disorder. Lower plasma volume, impaired thermoregulation, and lower glycogen storage are all associated with eating disorders and can lower the levels of anaerobic and aerobic endurance. In addition, lowered food intake also predisposes athletes to multiple micro nutrient deficiencies that can lower athletic performance and increase the risk of injury. This is evidenced when examining the abnormal menstrual patterns that often accompany eating disorders. Females who have stopped menstruating have lower levels of calcium in their bones, increasing their risk for stress fractures. The menstrual abnormalities correlate to a negative balance of energy and are also associated with lower resting-energy expenditure, which is typically the result of a decreased metabolic rate and lean mass. Body composition can be a useful tool in helping the athlete and coach understand the changes that are occurring as a result of training and nutrition factors. Health professionals involved in obtaining body composition data should focus on using the same technique with the same prediction equations to derive valid comparative data over time. Care should be taken that body composition values are used constructively as part of the athlete’s total training plan. Ideally, the emphasis should be on a periodic (semiannually or quarterly) monitoring of the athlete’s body composition to determine change of both the lean and fat mass. Many athletes are sensitive about body fat, so care should be taken to use body composition values in a way that enables their constructive use in an athlete’s general training plan. Athletes suspected of having an eating disorder should be quickly assessed and treated if necessary. It is likely that helping young athletes understand appropriate nutrition strategies for attaining a desirable body profile, weight, strength, and endurance will help reduce future eating disorder risk. 6.32 ASSESSMENT OF NUTRITIONAL STATUS 6.32.1 Assessment methods Assessment of nutritional status provides feedback to athletes for the development of the dietary component of their training and competition programs in order to improve or maintain desirable nutritional status and improve performance. The assessment is made up of the following components: • • • • Dietary Intake Nutrition Questionnaire to evaluate dietary practices during training and competition and a 24 hour dietary recall. Nutrition Profile Fluid Intake 189 • • • • • • • • • • • Body Weight & Diet History Menstrual History (if applicable) Dietary Supplement Use Training Profile Additional Information Clinical Measurements Height, weight, bone mineral density and estimates of body composition including fat mass and fat free mass Biochemical Measurements Indicators for immunological function included complete blood count with platelets. Indicators for profiles of muscle included: creatine kinase, testosterone, and cortisol. Indicators of profiles of iron status included hemoglobin, hematocrit, mean corpuscular volume, mean corpuscular hemoglobin concentration, and serum ferritin. Indicators for additional nutritional biochemical assessment included fasting glucose, sodium, potassium, chloride, creatine, blood urea nitrogen, etc. 6.32.2 Nutritional deficiency symptoms and signs Symptom or Sign Possible Nutritional Deficiency Other Possible Causes General Symptoms and Appearance Fatigue Protein-energy, iron, magnesium, potassium, vitamins B1, B12 and other B vitamins and vitamin C Many physical illnesses including hypothyroidism, cardiac failure, anaemia, chronic fatigue syndrome and depression Loss of appetite Zinc Many chronic illnesses Pica eating non-nutritive substances General malnutrition and possibly iron, calcium, zinc, vitamins B1 – thiamine, B3 – niacin, C and D Normal in infants under 2 years of age, pregnancy especially in young women, mental illness Loss of taste Zinc Common cold, many nasal disorders Cold intolerance Iron Hypothyroidism, anaemia and reduced cardiac output Pale appearance due to anaemia Iron, folate and vitamin B12 Excessive bleeding and haematological disorders Carotenoderma – yellow discolouration of the skin Protein-energy and zinc Dietary carotenoid excess especially in women, 190 noticeable on the face and trunk Diffuse hyperpigmentation hypothyroidism Protein-energy Addison’s disease and haemochromatosis Muscle wasting e.g. clothes Protein-energy appear too big, loss of limb musculature Loss of height and excessive curvature of the spine Calcium and vitamin D Increasing age and diseaserelated osteoporosis Itchy skin – pruritus Iron Many skin diseases, liver disease Dry skin Essential Fatty Acids or multiple nutritional deficiencies Old age, skin conditions e.g. eczema Red scaly skin in lightexposed areas Vitamin B3 Excessive sun-exposure in red/fair haired individuals lightexposed areas Excessive bruising Vitamin C Old age, trauma and blood disorders Haemorrhage or redness around hair follicles Vitamin C Bleeding into a joint or other unusual bleeding Vitamin C Plugging of hair follicles with keratin or coiled hairs Vitamin C Skin Various blood disorders Fine downy hair on torso – Protein-energy. Typical of lanugo Persistent anorexia nervosa Mouth Sore tongue Iron, vitamin B12, B2, B3 and possibly other B vitamins Excessively hot drinks and oral disease Cracking and peeling of skin on the lips Vitamin B2 – riboflavin Excessive exposure to cold or windy weather Cracking at the corners of the mouth Iron, vitamin B2 – Poorly fitting dentures, eczema riboflavin possibly other B infection with candida albicans vitamins Recurrent mouth ulcers Iron, vitamin B12, folate and possibly other B vitamins 191 Coeliac disease, Crohn’s disease recurrent herpes and oral disease Enlarged veins under the tongue with microhaemorrhages Vitamin C Smoking and old age Smooth, shinny and sore tongue: atrophic glossitis Iron, vitamin B12 and folate Head, Face and Neck Scalp hair loss Iron Any scalp disease, alopecia from other causes Dandruff Essential fatty acids and biotin Fungal infection of scalp Redness at the sides of the Vitamin B2 –riboflavin, nose vitamin B6 and zinc Seborrhoeic dermatitis Redness or cracking at the Vitamins B2 or B6 outer angle of the eyes Goitre Iodine deficiency is likely if Adolescence, pregnancy and goitre is present in > 20% various forms of thyroid disease of population – endemic goitre Hands and Nails Nails – brittle or flaking Iron and possibly essential fatty acids Poor circulation and old age Nails – upturned or spoon- Iron shaped nails Psoriasis or other diseases of the nail bed Carotenoderma – yellow discolouration of the skin noticeable on the palms Protein-energy and zinc Dietary carotenoid excess especially in women, hypothyroidism Muscle pains and cramps Magnesium, potassium, sodium, vitamin B1 and vitamin D if there is hypocalcaemia Muscle or neurological disease, polymyalgia rheumatica and hypocalcaemia Calf muscle pain after minimal exercise Vitamin B1 – thiamine Torn muscle, peripheral vascular disease and myopathy Excessive calf muscle tenderness Vitamin B1- thiamine Torn muscle, thrombosis Walking with a waddling gait Vitamin D and resultant myopathy Osteoarthritis of the hips or disease of the hip-girdle muscles Difficulty getting up from a low chair or climbing the stairs or weakness of Vitamin D and resultant myopathy Arthritis of the hips or knees, diseases of the nerves or muscles Musculo-skeletal 192 shoulder muscles Bowed legs Vitamin D – rickets in childhood Twitching of facial muscles Calcium and vitamin D if when tapping on the facial hypocalcaemia or severe nerve in front of the ear: magnesium deficiency Chvostek’s sign Paget’s disease and syphilis Hypocalcaemia for other reasons e.g. hypoparathyroidism Eyes Poor night vision Zinc, vitamin A and possibly vitamin B2 – riboflavin Retinal disease Conjunctival dryness Vitamin A Old age and Sjogren’s syndrome Diarrhoea Vitamin B3 Irritable bowel syndrome, malabsorption, infective diarrhoea and many other causes Constipation Dehydration, fibre, potassium, magnesium and folate Irritable bowel syndrome, diverticulosis, cancer of the colon Restless legs Iron or folate Various neurological disorders, pregnancy, rheumatoid arthritis, and renal failure Burning feet syndrome Vitamin B2 –riboflavin Early peripheral neuropathy Loss of balance when standing upright with feet together and the eyes closed: Romberg’s test Vitamin B12 and possibly vitamin B3 Many neurological disorders affecting the cerebellum, spinal chord or peripheral nerves Gastrointestinal Neurological Loss of vibration sensation Vitamin B12 and possibly in the lower limbs vitamin B3 Increasing age and peripheral neuropathy Peripheral neuropathy – numbness, tingling, disordered sensation, pain and or weakness in the hands or feet Vitamins B1, B12 and Diabetes and many other possibly B3, B6 and folate causes and very rarely copper (following gastrointestinal surgery or excess zinc ingestion). Relative lack of essential fatty acids. Unsteady movement or walking (cerebellar ataxia) Vitamin B1, vitamin E and Alcohol, hypothyroidism and Coenzyme Q10 many neurological and inherited disorders 193 Mental State Depression Vitamins C, B1, B3, B6, Mental illness, stress and as a B12, folate, biotin and consequence of physical illness possibly the essential fatty acids Irritability Folate Alcoholism, deprcssion and personality disorder Poor concentration Iron, vitamins B1, B12, folate and possibly essential fatty acids Depression, stress, lack of sleep, alcohol, dementia, anaemia, hypothyroidism and many other diseases Heart failure Vitamin B1 – 194hiamine and any deficiency causing anaemia Coronary, valvular and myocardial disease Palpitations Potassium and magnesium and any deficiency causing anaemia Coronary, valvular and myocardial disease Cardio-vascular 6.33 FOOD QUALITY AND SAFETY Our nutritional status, health, physical and mental faculties depend on the food we eat and how we eat it. Access to good quality food has been man’s main endeavour from the earliest days of human existence. Safety of food is a basic requirement of food quality. “Food safety” implies absence or acceptable and safe levels of contaminants, adulterants, naturally occurring toxins or any other substance that may make food injurious to health on an acute or chronic basis. Food quality can be considered as a complex characteristic of food that determines its value or acceptability to consumers. Besides safety, quality attributes include: nutritional value; organoleptic properties such as appearance, colour, texture, taste; and functional properties. • Safety and effectiveness of food biotechnology • Genetically engineered food meets stringent safety standards and do not differ from conventional foods in quality or safety • The benefits of biotechnology far outweigh the risks • Significant differences in nutrient content from its conventional counterpart or the introduction of a known allergen must be identified by a special label • Pesticides and health concerns • 00The prudent individual should avoid direct contact with pesticides 194 • With produce, analyzed data shows that synthetic and naturally-occurring pesticides are consumed at such low levels that they pose little threat to health • Meat products may contain higher amounts of pesticides • Fish from contaminated waters may contain high levels of pesticides • Lower limits for pesticides in foods were implemented for children in 1999, but full coverage is not due until 2006 • Ways to reduce the pesticide content in the foods we eat • Avoid direct skin or breathing exposure to pesticides • Food preparation may reduce pesticide residues • Wash produce • Peeling fruits and vegetables helps • Cooking helps • Eat less animal fat and seafood from contaminated waters • Buy fruits and vegetables locally and in season • Eat a wide variety of foods • Buy certified organic foods • • • • • • • • • Effect of food processing on food quality and safety A potential health risk of food processing is the conversion of a healthful food into a potentially harmful one The major purpose of food processing is to prevent waste through deterioration or spoilage Food processing results in the loss of some nutrients, but not major losses Food companies may enrich or fortify certain products before marketing Some nutrients may be susceptible to loss through processing Relatively stable nutrients o Carbohydrates o Lipids o Protein o Niacin o Vitamin K o Minerals Less stable nutrients o Vitamins A,D,E, B2, B6, and B12 o Pantothenic acid o Folacin Those that may be seriously depleted o Vitamin B1 o • Vitamin C Both commercial and home processing of food will not necessarily lead to a nutritionally inferior product 195 • The major problem with food processing is the excessive use of highly refined products • Sugar • Oils • Unenriched white flour • Salt • Questionable additives • Bacteria may be added unintentionally during commercial processing • Home food processing • Careful preparation of foods at home can minimize nutrient losses and preserve the healthful quality • The major problem is food borne bacteria • Food poisoning o Caused by consuming bacteria contaminated food o o • Irradiation may eliminate or reduce bacteria and reduce the need for many food preservatives Care in preparation of food at home can prevent the spread of bacteria Food additive safety • Purposes for the additives in the foods we eat • Add flavor • Enhance color • Improve texture • Preserve the food • Additives must be Generally Recognized as Safe (GRAS) to earn FDA approval • Dietary supplement safety • Many of them may be regarded as drugs in disguise • Reasons for the lack of research to document the effectiveness of plant products or dietary supplements to improve health or sport performance • Herbal products cannot be patented • The possibility of negative results • Safeguards for the use of dietary supplements • Try changing your diet or life-style first • Check with a doctor first • Buy standardized products • Use only single ingredient supplements • Be alert to both positive and negative effects • Stop if you experience any problems • Why do some people experience adverse reactions to some foods 196 • Food intolerance • Does not involve immune system • Body lacks the appropriate enzyme to digest a portion of the food • Food allergy • Adverse immune response to a food • Allergens may be found in food or food additives “If we are to make progress, we must not repeat history but make new history” “Everyone thinks of changing the world but no one thinks of changing himself “ UNIT 7 COACHING COMPETENCIES 197 Risk Management The objective of risk management is to reduce different risks related to a preselected domain to the level accepted by society. It may refer to numerous types of threats caused by environment, technology, humans, organizations and politics. On the other hand it involves all means available for humans, or in particular, for a risk management entity (person, staff, organization). The main ISO standards on risk management include Risk management is a structured approach to managing uncertainty related to a threat, a sequence of human activities including: risk assessment, strategies development to manage it, and mitigation of risk using managerial resources. The strategies include transferring the risk to another party, avoiding the risk, reducing the negative effect of the risk, and accepting some or all of the consequences of a particular risk. Some traditional risk managements are focused on risks stemming from physical or legal causes (e.g. natural disasters or fires, accidents, ergonomics, death and lawsuits 198 Introduction This section provides an introduction to the principles of risk management. The vocabulary of risk management is defined in ISO Guide 73, "Risk management. Vocabulary “. In ideal risk management, a prioritization process is followed whereby the risks with the greatest loss and the greatest probability of occurring are handled first, and risks with lower probability of occurrence and lower loss are handled in descending order. In practice the process can be very difficult, and balancing between risks with a high probability of occurrence but lower loss versus a risk with high loss but lower probability of occurrence can often be mishandled. Intangible risk management identifies a new type of risk - a risk that has a 100% probability of occurring but is ignored by the organization due to a lack of identification ability. For example, when deficient knowledge is applied to a situation, a knowledge risk materialises. Relationship risk appears when ineffective collaboration occurs. Processengagement risk may be an issue when ineffective operational procedures are applied. These risks directly reduce the productivity of knowledge workers, decrease cost effectiveness, profitability, service, quality, reputation, brand value, and earnings quality. Intangible risk management allows risk management to create immediate value from the identification and reduction of risks that reduce productivity. Risk management also faces difficulties allocating resources. This is the idea of opportunity cost. Resources spent on risk management could have been spent on more profitable activities. Again, ideal risk management minimizes spending while maximizing the reduction of the negative effects of risks. Principles of Risk Management The International Standards Organization identifies the following principles of risk management: [1] • • • • • • • • • • • Risk management should create value. Risk management should be an integral part of organizational processes. Risk management should be part of decision making. Risk management should explicitly address uncertainty. Risk management should be systematic and structured. Risk management should be based on the best available information. Risk management should be tailored. Risk management should take into account human factors. Risk management should be transparent and inclusive. Risk management should be dynamic, iterative and responsive to change. Risk Management should be capable of continual improvement enhancement. 199 and The Process According to the standard ISO/DIS 31000 "Risk management -- Principles and guidelines on implementation" [2], the process of risk management consists of several steps as follows: Establish the context Establishing the context involves 1. Identification of risk in a selected domain of interest 2. Planning the remainder of the process. 3. Mapping out the following: the social scope of risk management the identity and objectives of stakeholders the basis upon which risks will be evaluated, constraints. 4. Defining a framework for the activity and an agenda for identification. 5. Developing an analysis of risks involved in the process. 6. Mitigation of risks using available technological, human and organizational resources. o o o Identification After establishing the context, the next step in the process of managing risk is to identify potential risks. Risks are about events that, when triggered, cause problems. Hence, risk identification can start with the source of problems, or with the problem itself. • • Source analysis Risk sources may be internal or external to the system that is the target of risk management. Examples of risk sources are: stakeholders of a project, employees of a company or the weather over an airport. Problem analysis Risks are related to identified threats. For example: the threat of losing money, the threat of abuse of privacy information or the threat of accidents and casualties. The threats may exist with various entities, most important with shareholders, customers and legislative bodies such as the government. When either source or problem is known, the events that a source may trigger or the events that can lead to a problem can be investigated. For example: stakeholders withdrawing during a project may endanger funding of the project; privacy information may be stolen by employees even within a closed network; lightning striking a Boeing 747 during takeoff may make all people onboard immediate casualties. The chosen method of identifying risks may depend on culture, industry practice and compliance. The identification methods are formed by templates or the development of templates for identifying source, problem or event. Common risk identification methods are: 200 • • • • • Objectives-based risk identification Organizations and project teams have objectives. Any event that may endanger achieving an objective partly or completely is identified as risk. Scenario-based risk identification In scenario analysis different scenarios are created. The scenarios may be the alternative ways to achieve an objective, or an analysis of the interaction of forces in, for example, a market or battle. Any event that triggers an undesired scenario alternative is identified as risk - see Futures Studies for methodology used by Futurists. Taxonomy-based risk identification The taxonomy in taxonomy-based risk identification is a breakdown of possible risk sources. Based on the taxonomy and knowledge of best practices, a questionnaire is compiled. The answers to the questions reveal risks. Taxonomy-based risk identification in software industry can be found in CMU / SEI-93-TR-6. Common-risk Checking In several industries lists with known risks are available. Each risk in the list can be checked for application to a particular situation. An example of known risks in the software industry is the Common Vulnerability and Exposures list found at http://cve.mitre.org. Risk Charting This method combines the above approaches by listing Resources at risk, Threats to those resources Modifying Factors which may increase or decrease the risk and Consequences it is wished to avoid. Creating a matrix under these headings enables a variety of approaches. One can begin with resources and consider the threats they are exposed to and the consequences of each. Alternatively one can start with the threats and examine which resources they would affect, or one can begin with the consequences and determine which combination of threats and resources would be involved to bring them about. Assessment Once risks have been identified, they must then be assessed as to their potential severity of loss and to the probability of occurrence. These quantities can be either simple to measure, in the case of the value of a lost building, or impossible to know for sure in the case of the probability of an unlikely event occurring. Therefore, in the assessment process it is critical to make the best educated guesses possible in order to properly prioritize the implementation of the risk management plan. The fundamental difficulty in risk assessment is determining the rate of occurrence since statistical information is not available on all kinds of past incidents. Furthermore, evaluating the severity of the consequences (impact) is often quite difficult for immaterial assets. Asset valuation is another question that needs to be addressed. Thus, best educated opinions and available statistics are the primary sources of information. Nevertheless, risk assessment should produce such information for the management of the organization that the primary risks are easy to understand and that the risk management decisions may be prioritized. Thus, there have been several theories and attempts to quantify risks. Numerous different risk formulae exist, but perhaps the most widely accepted formula for risk quantification is: Rate of occurrence multiplied by the impact of the event equals risk 201 Later research has shown that the financial benefits of risk management are less dependent on the formula used but are more dependent on the frequency and how risk assessment is performed. In business it is imperative to be able to present the findings of risk assessments in financial terms. Robert Courtney Jr. (IBM, 1970) proposed a formula for presenting risks in financial terms. The Courtney formula was accepted as the official risk analysis method for the US governmental agencies. The formula proposes calculation of ALE (annualised loss expectancy) and compares the expected loss value to the security control implementation costs (cost-benefit analysis). Potential risk treatments Once risks have been identified and assessed, all techniques to manage the risk fall into one or more of these four major categories:[2] • • • • Avoidance (eliminate) Reduction (mitigate) Transference (outsource or insure) Retention (accept and budget) Ideal use of these strategies may not be possible. Some of them may involve trade-offs that are not acceptable to the organization or person making the risk management decisions. Another source, from the US Department of Defense, Defense Acquisition University, calls these categories ACAT, for Avoid, Control, Accept, or Transfer. This use of the ACAT acronym is reminiscent of another ACAT (for Acquisition Category) used in US Defense industry procurements, in which Risk Management figures prominently in decision making and planning. Risk avoidance Includes not performing an activity that could carry risk. An example would be not buying a property or business in order to not take on the liability that comes with it. Another would be not flying in order to not take the risk that the airplane were to be hijacked. Avoidance may seem the answer to all risks, but avoiding risks also means losing out on the potential gain that accepting (retaining) the risk may have allowed. Not entering a business to avoid the risk of loss also avoids the possibility of earning profits. Risk reduction Involves methods that reduce the severity of the loss or the likelihood of the loss from occurring. Examples include sprinklers designed to put out a fire to reduce the risk of loss by fire. This method may cause a greater loss by water damage and therefore may not be suitable. Halon fire suppression systems may mitigate that risk, but the cost may be prohibitive as a strategy. Modern software development methodologies reduce risk by developing and delivering software incrementally. Early methodologies suffered from the fact that they only delivered software in the final phase of development; any problems encountered in 202 earlier phases meant costly rework and often jeopardized the whole project. By developing in iterations, software projects can limit effort wasted to a single iteration. Outsourcing could be an example of risk reduction if the outsourcer can demonstrate higher capability at managing or reducing risks. [3] In this case companies outsource only some of their departmental needs. For example, a company may outsource only its software development, the manufacturing of hard goods, or customer support needs to another company, while handling the business management itself. This way, the company can concentrate more on business development without having to worry as much about the manufacturing process, managing the development team, or finding a physical location for a call center. Risk retention Involves accepting the loss when it occurs. True self insurance falls in this category. Risk retention is a viable strategy for small risks where the cost of insuring against the risk would be greater over time than the total losses sustained. All risks that are not avoided or transferred are retained by default. This includes risks that are so large or catastrophic that they either cannot be insured against or the premiums would be infeasible. War is an example since most property and risks are not insured against war, so the loss attributed by war is retained by the insured. Also any amounts of potential loss (risk) over the amount insured is retained risk. This may also be acceptable if the chance of a very large loss is small or if the cost to insure for greater coverage amounts is so great it would hinder the goals of the organization too much. Risk Transference Many sectors have for a long time regarded insurance as a transfer of risk. This is not correct. Insurance is a post event compensatory mechanism. That is, even if an insurance policy has been effected this does not mean that the risk has been transferred. For example, a personal injuries insurance policy does not transfer the risk of a car accident to the insurance company. The risk still lies with the policy holder namely the person who has been in the accident. The insurance policy simply provides that if an accident (the event) occurs involving the policy holder then some compensation may be payable to the policy holder that is commensurate to the suffering/damage. Some ways of managing risk fall into multiple categories. Risk retention pools are technically retaining the risk for the group, but spreading it over the whole group involves transfer among individual members of the group. This is different from traditional insurance, in that no premium is exchanged between members of the group up front, but instead losses are assessed to all members of the group. Create a risk management plan Select appropriate controls or countermeasures to measure each risk. Risk mitigation needs to be approved by the appropriate level of management. For example, a risk concerning the image of the organization should have top management decision behind it whereas IT management would have the authority to decide on computer virus risks. 203 The risk management plan should propose applicable and effective security controls for managing the risks. For example, an observed high risk of computer viruses could be mitigated by acquiring and implementing antivirus software. A good risk management plan should contain a schedule for control implementation and responsible persons for those actions. According to ISO/IEC 27001, the stage immediately after completion of the Risk Assessment phase consists of preparing a Risk Treatment Plan, which should document the decisions about how each of the identified risks should be handled. Mitigation of risks often means selection of security controls, which should be documented in a Statement of Applicability, which identifies which particular control objectives and controls from the standard have been selected, and why. Implementation Follow all of the planned methods for mitigating the effect of the risks. Purchase insurance policies for the risks that have been decided to be transferred to an insurer, avoid all risks that can be avoided without sacrificing the entity's goals, reduce others, and retain the rest. Review and evaluation of the plan Initial risk management plans will never be perfect. Practice, experience, and actual loss results will necessitate changes in the plan and contribute information to allow possible different decisions to be made in dealing with the risks being faced. Risk analysis results and management plans should be updated periodically. There are two primary reasons for this: 1. to evaluate whether the previously selected security controls are still applicable and effective, and 2. to evaluate the possible risk level changes in the business environment. For example, information risks are a good example of rapidly changing business environment. Limitations If risks are improperly assessed and prioritized, time can be wasted in dealing with risk of losses that are not likely to occur. Spending too much time assessing and managing unlikely risks can divert resources that could be used more profitably. Unlikely events do occur but if the risk is unlikely enough to occur it may be better to simply retain the risk and deal with the result if the loss does in fact occur. Prioritizing too highly the risk management processes could keep an organization from ever completing a project or even getting started. This is especially true if other work is suspended until the risk management process is considered complete. It is also important to keep in mind the distinction between risk and uncertainty. Risk can be measured by impacts x probability. 204 Enterprise risk management Main article: Enterprise Risk Management In enterprise risk management, a risk is defined as a possible event or circumstance that can have negative influences on the enterprise in question. Its impact can be on the very existence, the resources (human and capital), the products and services, or the customers of the enterprise, as well as external impacts on society, markets, or the environment. In a financial institution, enterprise risk management is normally thought of as the combination of credit risk, interest rate risk or asset liability management, market risk, and operational risk. In the more general case, every probable risk can have a pre-formulated plan to deal with its possible consequences (to ensure contingency if the risk becomes a liability). From the information above and the average cost per employee over time, or cost accrual ratio, a project manager can estimate: • • • the cost associated with the risk if it arises, estimated by multiplying employee costs per unit time by the estimated time lost (cost impact, C where C = cost accrual ratio * S). the probable increase in time associated with a risk (schedule variance due to risk, Rs where Rs = P * S): o Sorting on this value puts the highest risks to the schedule first. This is intended to cause the greatest risks to the project to be attempted first so that risk is minimized as quickly as possible. o This is slightly misleading as schedule variances with a large P and small S and vice versa are not equivalent. (The risk of the RMS Titanic sinking vs. the passengers' meals being served at slightly the wrong time). the probable increase in cost associated with a risk (cost variance due to risk, Rc where Rc = P*C = P*CAR*S = P*S*CAR) o sorting on this value puts the highest risks to the budget first. o see concerns about schedule variance as this is a function of it, as illustrated in the equation above. Risk in a project or process can be due either to Special Cause Variation or Common Cause Variation and requires appropriate treatment. That is to re-iterate the concern about extremal cases not being equivalent in the list immediately above. Risk management activities as applied to project management In project management, risk management includes the following activities: • • • Planning how risk management will be held in the particular project. Plan should include risk management tasks, responsibilities, activities and budget. Assigning a risk officer - a team member other than a project manager who is responsible for foreseeing potential project problems. Typical characteristic of risk officer is a healthy skepticism. Maintaining live project risk database. Each risk should have the following attributes: opening date, title, short description, probability and importance. 205 • • • Optionally a risk may have an assigned person responsible for its resolution and a date by which the risk must be resolved. Creating anonymous risk reporting channel. Each team member should have possibility to report risk that he foresees in the project. Preparing mitigation plans for risks that are chosen to be mitigated. The purpose of the mitigation plan is to describe how this particular risk will be handled – what, when, by who and how will it be done to avoid it or minimize consequences if it becomes a liability. Summarizing planned and faced risks, effectiveness of mitigation activities, and effort spent for the risk management. References 1. ^ "Committee Draft of ISO 31000 Risk management", International Standards Organization. 2. ^ Dorfman, Mark S. (2007). Introduction to Risk Management and Insurance (9th Edition). Englewood Cliffs, N.J: Prentice Hall. ISBN 0-13-224227-3. 3. ^ Roehrig, P (2006) Bet On Governance To Manage Outsourcing Risk. Business Trends Quarterly General references • ISO/IEC Guide 73:2002 (2002). Risk management -- Vocabulary -- Guidelines for use in standards, International Standards Organization. http://www.iso.org/iso/catalogue_detail?csnumber=34998. • ISO/DIS 31000 (2009). Risk management -- Principles and guidelines on implementation, International Standards Organization. http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm? csnumber=43170. • Crockford, Neil (1986). An Introduction to Risk Management (2nd ed.), Woodhead-Faulkner. ISBN 0-85941-332-2. Further reading • Alberts, Christopher; Audrey Dorofee, Lisa Marino (March 2008). "Mission Diagnostic Protocol, Version 1.0: A Risk-Based Approach for Assessing the Potential for Success". Software Engineering Institute. Retrieved on 2008-05-26. • Alexander, Carol and Sheedy, Elizabeth (2005). The Professional Risk Managers' Handbook: A Comprehensive Guide to Current Theory and Best Practices, PRMIA Publications. ISBN 0-9766097-0-3. • Borodzicz, Edward (2005). Risk, Crisis and Security Management. New York: Wiley. ISBN 0-470-86704-3. • Flyvbjerg, Bent (August 2006). "From Nobel Prize to Project Management: Getting Risks Right" (PDF). Project Management Journal (Project Management Institute) 37 (3): 5–15. http://flyvbjerg.plan.aau.dk/Publications2006/NobelPMJ2006.pdf. Retrieved on 26 May 2008. 206 • Gorrod, Martin (2004). Risk Management Systems : Technology Trends (Finance and Capital Markets). Basingstoke: Palgrave Macmillan. ISBN 1-40391617-9. • Stoneburner, Gary; Goguen, Alice and Feringa, Alexis (July 2002). Risk Management Guide for Information Technology Systems. Gaithersburg, MD: National Institute of Standards and Technology. http://csrc.nist.gov/publications/nistpubs/800-30/sp800-30.pdf. • Ward, Dan; Quaid, Chris (March/April 2007). "The Pursuit of Courage, Judgment and Luck" (PDF). Defense AT&L (Defense Acquisition University): 28–30. http://www.dau.mil/pubs/dam/03_04_2007/war_ma07.pdf. Retrieved on 26 May 2008. • United States Environmental Protection Agency (April 2004). General Risk Management Program Guidance, United State Environmental Protection Agency. http://www.epa.gov/OEM/content/rmp/rmp_guidance.htm#General. • Standards Association of Australia (1999). Risk management. North Sydney, N.S.W: Standards Association of Australia. ISBN 0-7337-2647-X. • IRM/AIRMIC/ALARM (2002). A Risk Management Standard. London: Institute of Risk Management. http://www.theirm.org/publications/PUstandard.html. DEVELOPING TOP LEVEL ATHLETES A) • • • • B) 1. • • • • • 2. • Introduction Watched world-class athletes – tremendous abilities and skills. Watched the results of Olympic and other world-class competition. Majority of medals and records are obtained by the athletes of a small number of countries. Those countries have developed systematic and comprehensive programs for assisting athletes. Essential Requirements Coaching the quality of coaching determines the quality of the training environment. the commitment of the coach to top achievement or realistic goals sets the tone of training. the time a coach has available depends on the degree he can be paid for his coaching responsibilities. the number of athletes a coach must train influence the quality of the training. the number of responsibilities, other than coaching, a coach must undertake such as fund raising and administration, detracts his/her ability to coach successfully. Athletes having special talent, strong motivation, and a willingness to work extremely hard, are all characteristics of the successful athlete 207 • • 3. • • • 4. • • • • finding such individuals, and encouraging them to pursue their talent to the fullest are often major challenges – TID must be implemented In countries that have a limited human resources, facilities etc, sports administration may need to concentrate limited resources on only a few sports. Facilities and Equipment the lack of facilities and equipment is a limiting factor to sport development. many Olympics athletes have been successful despite sub-standard facilities and equipment because of their high motivation and commitment. some suggestions which may be of help in improving facilities and equipment; o clearly identify your facility or equipment needs, give priority o try to make your sports need known to school officials, to community officials or politicians, to businessmen etc. o join with other sports or community groups to develop a plan or strategy to achieve your needs. o consider whether corporate support may be available to provide equipment or clothing under conditions that are reasonable. o consider entering sponsorship or licensing agreement for goods or cash, in return for corporations using your Olympic symbols or official sponsor statement. o approach specific International Sports Federations to determine if they can assist in providing assistance in designing sports facilities, or providing equipment. o consider training for periods of the year in existing facilities in other locations in order to improve the quality of training. o be sure you know all available training facilities or possibilities in your community, if you cannot get in there, get helps from somebody. o Often, staging major games or competitions creates an opportunity for government to provide facilities and equipment. Athlete Support enough time away from school or work to train – top level athletes may have to spend more than three hours a day in serious training, seven days a week. adequate rest and diet access to medical and physiotherapy support when needed continual stimulation and encouragement which creates a positive training environment and shows support for the aspirations of the athlete. 5. • Financial Support Funds may be needed; o to pay for travel and competition expenses o to pay athlete educational expenses o to compensate for time off from work o to provide adequate coaching or access to facilities 6. • Administrative Support there must be good planning and a fair degree or administrative support – ideally, the coach should coach, the athlete train, and the administrators do all the rest. 208 • administrative support could include handling correspondence, travel arrangements, fund raising, arranging training facilities, contact with media, promotion, meetings and so on. 7. • Competition competition, at the right level and frequency, is essential for the development of athletes. Competition provides a focal point for training, and an important motivation for daily training. Competition provides the ultimate test, where all the factors such as skill, physical conditioning, knowledge, motivation and strategy sre tested together. Careful evaluation of the results of competition can allow a coach to pinpoint weaknesses or strengths, and to adjust training if necessary. • • • PLANNING AN INTERNATIONAL SPORT COMPETITION A) • • Introduction opportunity for athletes to meet and compete with other athletes at a world level For coaches and trainers to share ideas, knowledge and experiences. Competing abroad can also be an upsetting experience if the tour members are not prepared for all the new experiences and adjustments that they must face. It is important to plan ahead, organized and planned for in advance. B) Start Planning 1. Chief de Mission • • • • The duties of the CdM are: to supervise the co-ordination of clothing, equipment, finances, transportation and scheduling to coordinate all efforts to meet the needs and desires of the athletes, coaching staff and trainers and to minimize problems (at least in players’ minds!) to act as liaison between Organization Committee and the sports team to head the team delegation and fulfill all protocol functions while on tour 2. What to Expect • • • • These include: other teams or individuals that have travelled overseas or travelled to the country you are going to the Ministry of External Affairs 209 • • • universities personnel books and resources in the library Malaysia Consulate and Embassy in that country or area you are going to 3. • • • • • • • • • • • • • Questions to Ask food accommodation facilities transportation organization committee of the competition training and competition schedules and facilities certain customs and laws of the country geography language exchanges rates banking medical services leisure time C) Travel Arrangement 1. Airline Travel For the best flights and best available rates, you must know: the size of your group your budget for airfare date of departure and return nearest airport to where you will be staying the baggage limits (weight restrictions, number allowed for person, extra baggage charges) • the special arrangements for equipment that is to be shipped separately, find out; o how long it will take o how much it will cost o where to pick it up o when and how to transport it o what arrangements will you have to make with customs • • • • • 2. Documents • passport o need a current passport o leave plenty of time for passport approval o manager should record all passport numbers and names and keep them separately from the passport o passport lost or stolen, contact Malaysia Embassy o need to know the nearest Malaysia Embassy, who to contact, and let them know you’re coming before you leaving 210 • • 3. entrance visa o some foreign countries require an entrance visa o find out how long the visa is good for, and if it will allow to bring in any medication or drugs required for the team and all the special needs insurance o check what the airline policy covers and add what extra coverage you will need while away o it is good idea to have extra insurance for valuables such as cameras and special equipment Vaccinations • • • May be required when entering or returning from the country you are travelling to. Find out what is necessary and what is recommended. Plan to have vaccinations to all those travelling, ensuring plenty of time for adjustment and recovery. 4. Customs Regulations • certain countries may restrict what you may bring into the country and what restrictions exist in bringing back items • be sure to record serial numbers of all equipment and valuables such as cameras, with your customs office before or as you are leaving. • do not take letters of gifts of unknown contents for ‘friend’ to people in the country you are visiting you will be punished according to their regulation D) What Else to Take 1. • • • • 2. • • • • • • Document List all tour members and passport numbers, should have 3 – 4 copies complete travel itinerary complete schedule of events and timing medical o take full amount required for use during trip o take typed document showing full generic name o register medication with officials in charge of competition o get medical clearance to bring drugs into the country if necessary Clothing and Equipment full medical kit should be packed team uniforms – playing, warm up, formal practice gear – anticipating extremes of weather leisure and formal wear – suitable to dress standards of the host country nylon laundry bag for each person personal supplies to last the full trip 211 • • • own special equipment – don’t assume it will be provided video equipment to record team performance those wearing glasses, should bring an extra pair • • • • • • • • • • Useful Extras official letterhead, carbons, papers and pens masking tapes and markers international adaptor non-electric alarm clock long extension cord gifts country’s flag and tape recording of national anthem international driver’s license maps of city and area extra non-perishable food 3. 4. • • • • • E) The Trip 1. • • • • • • • • • • 2. Finances Find out the exchange rate and set up a liaison with a bank in the country you are visiting Take money in travellers cheques Take some small currency for use on arrival for taxis, tipping etc Have an international recognized credit card Caution: some countries will not allow you to purchase their currency until in the country and will not allow you to take their currency out of that country Briefing Before you go, have a briefing session with athletes and coaches, explains the; itinerary accommodation host country situation – religious, political, custom, culture, economic etc adjustment – time zone, climate, food and water etc the expected code of conduct – sportsmanship, friendship, etc identify any security precaution express any team rules – disciplines public relations – language, dressing etc press interview – identify questions to expect and how to respond to the media identify any technical matters concerning training and competition that should be known before arrival Equipment and Baggage 212 • • • • • each piece of baggage should be clearly marked be sure to know how many pieces were checked camera and film should be carried in hand luggage ensure that arrangement have been made for transportation of baggage as well as team double check that nothing is left behind when moving on, leave a forwarding address with the hotel 3. Media • organize an opportunity for the media to interview the team prior to departure • have a team handbook ready with data and photos of each athlete • prepare press releases as required • have media contact telephone or telex numbers so you can transmit results 4. Protocol • attend all meetings, receptions and ceremonies given in your honour • remember you are representing your country 5. Helpful Hints • be a good sport – gracious if you lose, non-patronizing even if clearly superior • expect to be self-reliant and plan that way • other countries may operate at a faster or slower pace of life • keep your sense of humour, be forewarned and attempt to adapt • relationships and goals are important – remember everyone is there to help the athletes • have shared goals so you can focus on the objectives of the trip rather than its distracting elements • standardized routines before competition so the athletes have some familiarity and security even in a foreign country • you may need an interpreter but one may not always be with you. Try to learn a few key phrases. Those of the host country will likely be more responsive because you have made an effort. Don’t let the language barrier dampen your positive attitude. F) • When You Return prepare press release or an interview opportunity for the media to review your trip thank-you notes should be written to all who helped you – be sure to obtain their addresses before you return home evaluation of trip by coaches, managers, and possibly athletes reports written for your sport governing body • • • Topic: Coaching Development and Presentation Skills 213 1. The Need for Trained Coaches The most essential requirement in developing top level athletes is the availability of a world –class coach. If coaching is highly knowledgeable , motivated, intense, sensitive to individual needs and successful in solving problems, the training environment should generate much success for athletes. 2. How to Organize a Coach Development Program. • Firstly, the teams must identify their needs very specifically. Which level of expertise is needed and how many coaches are required over a period of time. • What resources and facilities are available to train them and are the existing training plans efficient. • Identify other quality coaches and sport associations in your area who can help you with your planning. • When you have established your needs, you can starts to establish a plan. Training coaches is a long term project requiring a systematic approach . The plan must be flexible and sensitive to ever changing needs to the coaches. 3. Characteristics of a coach training program includes: • provided different level of experience. The first level are very basic and towards encouraging • individuals to become involved and to be reasonably competent in working with beginners. • coaches training relate to three needs: sport specific techniques, coaching theory and practical experience. • sport specific knowledge includes subjects such as techniques, strategy, and training plans. • Theoretical knowledge includes subject areas such as psychology, physiology, biomechanics, • principles of training, athletic injuries, diet and so on. • certification for accomplishing a certain level is important in motivating training and in identifying accomplishments. • Coaching programs should encourage the development of more coaches and better coaches. 4. Review the Possible Opportunities for Training Coaches: • • • • • • • Having sport specific clinics. Having sport coaching theory clinics. Having apprentices programs where a promising junior coach works and trains with a senior level coach. having physical training program in higher institutions. Having practical experiences training in sports industries. access to coaching literature and references organise monthly seminars . 5. Establish your Plan • determine the amount and type of knowledge required at each level. • resources must be established at each level. • set up a training program to develop competent instructors. 214 • • set up a structure to offer the courses. recognize the coaches who successfully compete a specific level by some form of certification. 6. Characteristics of Coaching Candidates: • • • • • • • intelligent and highly motivated. interested in along term involvement with sport. prosses teaching skills. have excellent interpersonal relationships. have the necessary time. are practical, problem-solving types. ideally, have training in physical education, or extensive experience in sport. 7. Hiring Foreign Coaches: The quickest way of achieving quality coaching is to import expert. • Advantage to hiring foreign coaches • Disadvantage of hiring foreign coaches. 8. Should Coaches be Paid? 9. The Relationship Between Coaches and Others. PRESENTATION SKILLS 7.0 Presentation Skills 7.1. Introduction The material of your presentation should be concise, to the point and you are able to present an interesting presentation. 7.2 OBJECTIVES At the end of the lesson, participants should be able to: 1. Understanding presenters’ personal skills. 2. Preparation needed for good presentation. 7.3 CONTENT • presenters’ personal skills . • Preparation needed for good presentation. 7.3.1 Presenters’ personal skills . • • • The following presenter’s personal skills are just as important for delivering good presentation. Your voice- how you say it is as important as what you say.. Body language: your body movements express what your attitudes and thoughts really are. Appearance: first impressions influence the audience’s attitudes to you. Dress appropriately for the occasion. 215 7.3.2 Preparation needed for good presentation. Make the list of these two things as your starting point: • • Decide the objectives of the talk. What are the main points you wish to deliver. Making the presentation • • • • • Greet the audience Tell the audience what you are going to tell them. Then tell them. At the end tell them what you have told them. Keep to the time allowed. Delivery • • • • • • • • • Speak clearly. Don’t shout or whisper. Don’t rush, or talk deliberately slowly. Be natural. Deliberately pause at key points. Avoid jokes unless you are a natural expert. To make the presentation interesting, change your delivery, but not to obviously, eg. Speed or pitch of voice. Look at the audience as much as possible, but don’t fix on an individual. Stand in apposition where you obscure the screen. Avoid moving about too much. Keep an eye on the audience’s body language. Purpose of having public speaking. It govern the content and style of presentation and have the following purposes: • Informative: summarise problems, describe plan, reports the progress of the team. • Instructional: giving instruction to the athletes or team. • Persuasive: persuade audience or team members. 7.3.2 How to be a Good Public Speaker • Did you ever notice how the audience love public speakers that seem to be born with the public speaking ability. • We come across politicians and recall our old college professors who knew how to keep us stupefied with their words. • Nonetheless, most people are terrified when they are asked to address a group even if their good at making speeches. • Anyone can be an excellent public speaker with proper rehearsal. In this day of technology and information, even the burden of composing the speech can be relieved since a variety of experts provide free online content. 7.3.3 Ways to Control Public Speaking Anxiety 216 The 4 key suggestions here will do much alleviate the problem and assist anyone to control and overcome public speaking anxiety: • Thorough preparation Thorough preparation! There is no short-cut. If you have carefully researched your material so you are convinced it is worth delivering, and you firmly believe your audience needs to hear it, and you have practiced and practiced the delivery, you can stand up in front of an audience with confidence! • Breathing Control nervousness by taking deep breaths to relax the body. Concentrate on your message and the things you have prepared to present to your audience rather than on your nervousness. Use positive speech, even in your own thoughts. Instead of saying to yourself, "Boy, do I feel nervous", which only reinforces the feeling, say, "My adrenaline is pumping and I'm going to use it to deliver an unforgettable presentation!" • Confidence visualized To increase confidence and combat uncertainty use visualization techniques. These can be VERY effective. Running through the whole presentation including the approach to the speaker's stand the initial pause, the first few sentences, over and over again in your mind, will create great confidence. • End result visualization Include the end result in your visualization exercise. See yourself having successfully concluded an excellent presentation with the applause of the audience in your ears. See the smiles, hear the compliments afterwards and make them real in your mind. Measurement is the collection of information on which a decision is based on. Evaluation is the use of measurement in making decision. Measurement and evaluation are interdependent concepts. Evaluation is a process that uses measurements, and the purpose of measurement is to collect information for evaluation. 7.3.4 Organise and deliver your content effectively • • • • • • • Factors that you could consider in preparing your public speaking are as follows: Planning your public speaking well. Knowing your content well. Analysing your audience. Knowing the venue and presentation room. Knowing the time allotted Writing and outline of your delivery. Deciding on the appropriate style of delivery. 7.3.5 Analysing your Audience 217 To succeed in your public speaking, you need to know your audience. An audience analysis can help you to know: • • • • The background information of the audience. Education background Reasons for attending Expected number of audience. 7.3.6 Prepare and use effective visual aids for delivery. • • • • Practice using your aids to ensure their successful integration into the content of the presentation. If you are using objects, such as model, for the visual aids, practice describing or explaining the actual objects or inventions. You must know what to do with them, how and what to explain and how long you need to demonstrate the objects. Well prepared and skilfully used visual aids can reinforce your major points and they enable message retention among the audience. Example of visual aids: • • • • Transparencies Flips charts Models Photographs Other kinds of visual aids. 7.3.7 Things to Consider When preparing to speak publicly, you must concentrate on the people and consider ways to hold their interest in listening to you to the end. Listen to yourself during rehearsal. To improve your ability, record the length of your speech, set spots in advance, where you can change your tone, your speed and rhythm and plan your speech. How you walk in and the first three minutes of your public speech can make a lasting impression on your crowd. The degree of confidence and calmness you portray will directly affect the impact you create. Begin on a strong note and hold the people attention. Have an opening statement to grip your crowd. Don't look tense, even if you are late, but portray a calm posture and attitude. To wrap up this short article on speaking in public we can make two more quick points o prepare well in advance. Make sure you have all the information you'll need and practice your public speech ahead of time. Try speaking into a full length mirror; you'll begin to notice things about posture and hand movements you may not have picked up on previously. o Here's something else that has helped me also; tape or video record your speech. Once done watch or listen to yourself and take notes. If you try • • • • • • • • 218 this once per day leading up to the big day you'll appear as a polished speaker, even though you might be shaking in your boots. 7.3.8. Handle question and answer sessions When you finish your presentation, invite questions from your audience. Techniques to handle question and answer sessions are as follows: • • • • Always repeat questions posed to your audience Look at questioner when answering the questions Your response to the question should be short and to the point After the question and answer session, remember to close your presentation with a strong note and a ‘thank you’. However, if you do not know the answer: • • • You say it or tell the audience that you will get back to it. You can offer to discuss it further afterwards Ask for the questioner’s contact number or e – mail. Media Relation 7.0 Introduction This topic is to explore the overall concept of coaching practice from sports media perspective which related to team preparation (training and competition) and reflection in coaching. This topic also will be discussed the relationship media system with the several components in reporting such as gives opinions, criticism, interviewing, story outline, creative and originality. 7.1 Objectives Able to understand and mastering the media role from the coaching perspective. 1. Able to gives reporting through highly professionalism, value and behavior in the coaching context. 2. Socially work with responsible as a coach in the sports media perspective. 3. Able to think creatively and critically into sports media from coaching perspective. 4. Effectively communicate and work as a team in term of reporting in the coaching practice 7.2 Contents • Coach Report. • Coach viewed. 219 • • • Coach Protection. Coach Sensitivity. Provides Ammunition. 7.2.1 Coach Report: Oral and Writing Reporting by the Coach news paper, radio, television, video conferencing, web conferencing and press conference. 7.2.2 The Coach Viewed: Outlets viewed themselves more as cheerleaders for his/her team. 7.2.3 Coach Protection: The coach also should be protected their players/athletes from negative publicity 7.2.4 Coach Sensitivity: The coach should sensitive and responsive to the media / spectators feedback. 7.2.5 Provides Ammunition: The coach essentially provides a lot of ammunition, which they should, treats sports media as entertainment. Conclusions The overall content in this topic is related to the components of sport media. The application on developing and maintaining the skills of reporting to the media in the coaching context will provide the behaviour coaching value to fit them into social environment, enjoy and committed with their team/athletes. What is a problem? A problem is an obstacle which makes a difficult to achieve a desired goal, objective or purpose. It refers to a situation, condition or issue that is yet unresolved. 7.5.4 Steps in Problem Solving Process • Gather information • Define the problem • Develop solution • Consider the consequences • Make decision • Implement and evaluate solution 7.5.5 Strategies to Resolve Problems • Direct Intervention • Indirect Intervention • Delegation • Purposeful Inaction • Consultation or collaboration. 7.5.6 Steps To Problem solving Techniques. 220 • • • • • • • Define the problem. Look at potential causes for the problem. Identify alternatives for approach to resolve the problem. Select an approach to solve the problem. Plan the implementation of the best alternatives(this is your action plan) Monitor implementation of the plan. Verify if the problem has been resolved or not. Decision Making in sports. Introduction The decision making process requires information to be gathered and then interpreted in order to make a correct decision, often under pressure. The difficulty presented to the coach is to ensure that in the pressure situation of a game or contest , the athletes make the correct decisions in which skills to use when faced with the appropriate cues. Definition of decision making The process of mapping the likely consequences of decision, working out the the importance of individual factors and choosing the best course of action to take. It involves in gathering opinion, judgment , considerations that results in reaching a decision. Steps Influencing to Effective Decision Making One of the most practical decision making techniques can be summarized in those simple decision making steps: • Identify the purpose of your decision. • Gather information. • Identify the principle to judge the alternatives. • Brainstorm and list different possible choice. • Evaluate each choice in terms of its consequences. • Determine the best alternative. • Put the decision into action. • Evaluate the outcome of your decision and action steps. The man who never alters his opinion is like standing water ,and breeds reptiles of the mind. – William Blake “Never break four things in life, TRUST, RELATIONS, PROMISE and HEART because when they break, they don’t make noise but pains a lot “ 221 UNIT 8 SPORTS PSYCHOLOGY 222 NO Kandungan (Contents) TOPIK Pembentukan & Kesepaduan Pasukan (Team Building & Cohesion) Ujian & Pengukuran Dalam Psikologi Sukan (Test & Measurement in Sport Psychology) Rancangan dan Aplikasi Program Latihan Mental dalam latihan (Plan and Application of Mental Skills Program in training) 1. Team Building and Cohesion Team Building In Sport • If everybody can find a way to put their personal aside for the benefit of the team, ultimately they will gain for themselves in the long run. But I think what often happens is people think have to take care of themselves first and the team second. Then the infrastructure breaks down and nobody‘s accountable. You have to sacrifice yourself for the good of the team, no matter what role you play on the team-whatever you‘re playing 30 minutes or two minutes a game (Mark Messsier as quoted in Miller, 2001, p. 152). As this quote by Mark Messier illustrates, the importance of cohesion in sports team is recognized by even those who are best known for their individual prowess. Because it is critical for group development group maintenance, and the group‘s collective pursuit of its goals and objectives, cohesion has been identified as the most important small group variable (see Golembiewski, Hilles, & Kagno, 1974). Consequently, at the core of any team building program is the expectation that the intervention will produce a more cohesive group. Coaches, either alone or with the help of a sport psychologist, invariably seek ways to build an effective team. It‘s not enough for the coach to proclaim to his or her charges, let‘s act like a team. Consequently, coaches or sport psychology specialist often engage in what is known as team building. As Carron and Haussenblas (1998) noted, team building can be defined as team enhancement or team improvement for both task and social purpose. Thus, it would seem prudent for coaches to foster team building so that athletes may have meaningful experiences that ultimately may lead to a greater sense of unity and cohesiveness. However, sport is not the only physical activity domain which team building has been shown to be effective. Research by Carron and Spink (1993) and Spink and Carron (1993) have 223 shown that a team-building intervention program can have a substantial impact on perceptions of cohesiveness as well as on individual adherence behavior. In short, the group has a substantial stabilizing influence on its membership. Given that 50% of adults who initiate an exercise program drop out within the first 6 months (Dishman, 1994), this seems as important area for intervention. Owing to its distinct nature, the implementation of teambuilding interventions in sport and exercise setting is indirect. The coach/leader is generally the primary arbitrator of group goals, individual roles, and leadership style. As a consequence of this, all of these setting become more indirect as they must be filtered through the coach/leader in each instance. One approach to team-building intervention adopted by Carron, Spink, and Prapavessis (Carron & Spink, 1993) involved the use of a fourstage process comprising an introductory stage was to provide the coach/leader with a brief overview of the general benefits of group cohesion. For example, in team building with sport teams, the relationship between perceptions of cohesiveness and enhanced team dynamics was discussed (Prapavessis,, Carron & Spink, 1993).The conceptual stage was used to accomplish three purposes: (a) to facilitate communication with the coaches/leader about complex concepts (e.g, groups, cohesiveness); (b) to high light the interrelatedness of various components of the team building protocol and; and (c) to identify the focus for possible interventions (Carron & Spink, 1993). The purpose of the practical stage was to have coaches/leaders, in an interactive brainstorming session, generate as many specific strategies as possible to use for team building in their group. This was thought to be desirable for three reasons. First, coaches/leader differs in personality and preferences; therefore a strategy that might be effectively implemented by one coach/leader might not be by another. Second, groups differ, and coaches/leaders are the individuals most familiar with their groups. An intervention strategy that might be effective in one group might be ineffective in another. Finally, de Charm‘s (1976) origin-pawn research has shown that motivation is enhanced when individuals given greater control over personal behavior. Thus, coaches and exercise leaders are likely to be motivated to employ various team-building strategies because (a) they are given the opportunity to participate in the brainstorming session, and (b) they have control over which strategies they use with their team or class. Research by Carron and Spink (1993) and Spink and Carron (1993) in the exercise domain provide a good illustration of the type of activities characteristic of the practical stage. Carron and Spink encourage fitness instructors to develop specific strategies to use in their classes. Table 8-2 contains examples some of the specific team-building strategies identified by fitness leaders in the practical stage, as well as suggested strategies for coaches of sport teams. In the intervention stage, the team-building protocol were introduced and maintained by the coaches or exercise leaders in order to increase the level of 224 task cohesiveness of the groups. One team-building intervention that was implemented in a sport setting used elite male soccer teams (Prapavessis et al., 1996). The coaches involved in the team-building intervention attended a workshop 2 weeks before the beginning of the season, at which the specific strategies for implementing a team-building program were established. Throughout the preseason and then during 6 weeks of the season, the coaches emphasized the team-building strategies. Perceptions of cohesiveness were assessed in the preseason and after 8 weeks. No differences in cohesiveness were found, however, between the team-building, attention-placebo, and control conditions. One possible explanation advanced to account for these results was that many sport coaches inevitably engage in team-building strategies on their own. That is, they establish goals and objectives, work to ensure conformity to group norms, facilitate role clarity and role acceptance, and so on. Also, in sport teams, cohesion is an inevitable by-product of group processes (e.g., communication), an evolving group structure (e.g., development of roles) and group outcomes (e.g., winning/losing). Thus, a team-building program in a sport team would most likely combine in an interactive way with ongoing concomitants of cohesion. The lack of research in sport on the impact of team building in sport might wish to consider the athletes‘ opinions on collective areas of concern (i.e., targets for teambuilding strategies). For example, a needs assessment could reveal that team members understand and accept their roles and are well aware of the team‘s goal and objectives but perceive group cooperation to be minimal. Also, the inclusion of selected high status members of the team (captain, co-captains, highly skilled athletes) in implementing the team-building program could then be designed around this feedback. In this regard, Yukelson (1984) presented nine effective ways to enhance coach athlete communication systems and team harmony in sport teams: Open communication channels by providing opportunities for the athlete input. Communication is a group process, and mutual trust and respect are essential in order to keep the channels open. Develop pride and a sense of collective identify within the group by setting out realistic team, individual, and subunit goals. Feeling of pride and satisfaction develop when individuals and groups attain challenging but realistic goals. Strive for common expectations on what types of behavior are appropriate. An organizational philosophy should specify not only the desired objectives the group is striving to achieve but also the strategy, operating procedures, or means to reach these goals as well. Value unique personal contributions by emphasizing the importance of each of the roles that are necessary for group performance. 225 • The leader of an organization provides the team with the direction and encouragement it needs, and the athletes carry out their responsibilities to the best of their abilities. Key elements to achieve success; • Recognize excellence by rewarding exceptional individual performance. If realistic objectives are set out and each individual clearly understand his or her role, the outstanding execution of that role should be recognized to enhance feelings of pride and commitment in the group and its members. Strive for consensus and commitment by involving the total team in goalsetting activities. Use periodic team meetings to resolve conflicts. Many explosive situations can be resolved by encouraging open communication within the team. Stay in touch with the formal and informal leaders in the team. The team members with high prestige and status are not only a barometer for assessing the group‘s attitudes and feelings; they also are effective agents for implementing necessary changes. Focus on success before discussing any failures. A positive group climate is developed if the positive aspects of group and individual performance are highlighted before errors and omissions are discussed. Communication – Clear communication of expectations, responsibilities and guidelines promotes team work Knowledge and Skills – The members of the organization bring a variety of abilities, training and interests to the job. Members share their knowledge with each other in order to benefit the entire team. Productivity – The overall effectiveness of getting things done Quality – It is the agreed upon standard for performance, which is unique for every team. Safety and Security – Attention to working conditions, procedures, and safety and security regulations. Teamwork – It is measured by how well a group of people work together to achieve a common goal. Strategies for Building Team Harmony Get to know your colleagues Give positive feedback to your colleagues whenever you get the chance Give 100 percent effort, and work hard on your weaknesses Both negativism and positivism are highly contagious Resolve conflicts as quickly as possible 226 Get your attitude and disposition right before going to work Don‘t be a loudmouth or show-off Go out of your way to help your colleagues whenever you can Be fully responsible for yourself Be your own best igniter Communicate clearly, honestly, and openly with your boss Don‘t forget to have fun Team spirit • This component is to make sure that every member of the team realizes his role I the team is vital for team success. We will focus on three areas : The team will gather in a scrum like situation. The captain will give words of encouragement followed by team members pledging to give their best. Slogan or battle cry A word of prayer before commencing their physical warm up. Practical • • • • Heart to heart talk (I like you because...) Sharing my Strengths Team Problem Solving Activities Team Cohesion Activities 2. Test and Measurement in Sport Psychology The aims of psychological testing are: • • • • • • • • • • • Motivation Diagnosis and prescription Selection FPR team membership or special activities Determination of status for grades Aiding of skill learning Determination of method effectiveness Public relations Aiding of research Construction of norms and scoring scales Classification Program evaluation Psychological Assessment Tools 227 • • • • Mental Performance Inventory (MPI) Test of Performance Strategies (TOPS) Competitive State Anxiety Inventory -2R (CSAI-2R) Profile of Mood State (POMS) Mental Performance Inventory (MPI) - The mental performance inventory is a specially designed questionnaire to help you get a clearer idea of your mental strengths and weaknesses relative to the following 7 variables: • • • • • • • Self confidence Negative energy Attention control Visual and imagery control Motivational level Positive energy Attitude control Test of Performance Strategies (TOPS) -This is a 64-item inventory to measure psychological behaviors of athletes during competition as well as practice. Eight variables are measured relative to competition and practice behaviors. The eight variables are; • • • • • • • • Activation Relaxation Imagery Goal setting Self-talk Automaticity Emotional control Attentional control Competitive State Anxiety Inventory – 2R (CSAI-2R) - This is a 17 items measuring somatic anxiety, cognitive anxiety, and self-confidence among athletes in competitive setting. Profile of Mood States (POMS) - This questionnaire contains 24 simple mood descriptors, such as angry, energetic, nervous, and unhappy. Respondents indicate whether they have experienced such feelings on a 5-point scale (0 = not at all, 1 = a little, 2 = moderately, 3 = quite a bit, 4 = extremely). It measure the following variables: 228 • • • • • • Confusion Anger Vigor Fatigue Tension Depression PROFILE OF MOOD STATES (POMS) Name: ____________________________________Age:____________ Gender: M / F Sport: _______________________________Event / Position: ______________________ Number of years you have involved in this sport:__________ Date:________________ Below is a list of words that describe feelings. Please read each one carefully. Then tick in the box that best describe HOW YOU FEEL RIGHT NOW. Make sure you answer every question. No Feelings 1. Panicky 2. Lively 3. Confused 4. Worn out 5. Depressed 6. Downhearted 7. Annoyed 8. Exhausted 9. Mixed-up Not at all A little Moderately Quite a bit 10. Sleepy 11. Bitter 12. Unhappy 13. Anxious 14. Worried 229 Extremely 15. Energetic 16. Miserable 17. Muddled 18. Nervous 19. Angry 20. Active 21. Tired 22. Bad 23. tempered Alert 24. Uncertain 1 I feel jittery 2 3 I am concerned that I may not do as well in this competition as I could I feel self-confident 4 My body feels tense 5 I am concerned about losing 6 I feel tense in my stomach 230 Very much Moderately Somw what Not at all Competitive State Anxiety Inventory – 2 Revised (CSAI-2R) Name ____________________________________ Age ___________ Gender M / F Sport __________________________________ Event / Position ____________________ Number of years you have involved in this sport _________Today’s date _______________ Direction: A number of statements that athletes have used to describe theirfeelings before competition are given below. Read each statement and then cir le the appropriate number to the right of the statement to indicate how you feel RIGHT NOW – at this moment. There are no right or wrong answers. Do not spend too much time on any one statement, but choose the answer which describes your feelings RIGHT NOW. 7 I’m confident I can meet the challenge 8 I am concerned about choking under pressure 9 My heart is racing 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 I’m confident about performing well I’m concerned about performing poorly I feel my stomach sinking I’m confident because I mentally picture myself reaching my goal I’m concerned that others will be disappointed with my performance My hands are clammy I’m confident of coming through under pressure My body feels tight Test of Performance Strategy - This questionnaire measures performance strategies used by athletes in various sport situations. Because individual athletes are very different in their approach to sport, we expect the responses to be different. We want to stress, therefore, that there are no right or wrong answers. All that is required is for you to be open and honest in your response. Each of the following items describes a specific situation that you may encounter in your training and competition. Please circle how frequently these situations apply to you in the following 1-5 scales. During competition…. Strongly disagree neutral agree strongly disagree agree 1 2 3 4 5 I talk positively to myself to get the most out of competition My emotions keep me from performing my best I usually perform without consciously thinking about it I usually set personal performance goals I imagine competitive routine before I do it 231 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 I can increase my energy to just the right level I imagine screwing up during competition I am able to relax if I get too nervous I say things to myself to help my competitive performance My emotions get out of control under the competitive pressure I don‘ t think about performing much, I just let it happen I set very specific goals I rehearse the feel of performance in my imagination I do what needs to be done to get psyched up My self-talk is negative I find it difficult to relax when I am too tense I can manage my self-talk effectively When something upsets me, my performance suffers I perform on `automatic pilot‘ I set specific result goals for myself I rehearse my performance in my mind I psych myself up to get ready to perform I have thoughts of failure When the pressure is on, I know how to relax I say specific cue words or phrases to myself to help performance When I make a mistake, I have trouble getting my concentration back on track I play/perform instinctively with little conscious effort I evaluate whether I achieve my competition goals I can visualize competition going exactly the way I want it I can raise my energy level when necessary 232 I keep my thoughts positive When I need to, I can relax to get ready to performance 31 32 Scoring Sheet Performance Strategies During Competition Date: Item Item Item Item Self Talk 1 Emotional 2 Control Automaticity 3 9 10 17 18 25 26 11 19 Goal Setting Imagery Activation Negative Thinking Relaxation 4 12 20 27 28 5 6 7 13 14 15 21 29 22 23 30 31 8 16 24 32 Total Total/20 x100 Test of Performance Strategies (Training) • Directions: Each of the following items describes a specific situation that you may have encountered in your competition. Think back to the prime of your career, read each statement, and circle the appropriate number to the right of the statement to indicate how you usually felt. During training …. Strongly disagree neutral agree strongly disagree agree 1 2 3 4 I set realistic but challenging goals I have trouble controlling emotions when things are not going well I seem to be in a flow I use practice time to work on relaxation technique 233 5 6 I talk positively to myself to get the most out of practice I imagine watching myself as if on a video replay when I visualize my 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 performance My attention wanders while training I have trouble raising my energy if I feel slow I have very specific goals I am frustrated and emotionally upset when practice does not go well My movements and skills seem to flow (happen) naturally I practice relaxation techniques at workouts I motivate myself to train through positive self-talk I visualize successful past performances I have trouble maintaining concentration during long practices I practice increasing my energy during training sessions I set goals to help me use practice time effectively When things are going poorly, I stay in control of myself emotionally I am able to allow whole skill or movement to happen naturally without concentrating on each part of the skill Relax myself to get ready I say things to myself to help my practice performance I rehearse my performance in my mind Focus attention effectively I have difficulty increasing energy 234 level during workouts I don‘ t set goals for practices, I just go out and do it I lose my focus when I perform poorly I don‘ t think about performing much just let it happen I practice a way to relax Manage self-talk effectively When I visualize my performance, I imagine what it will feel like I am able to control distracting thoughts when training I practice a way to energize myself 25 26 27 28 29 30 31 32 Scoring Sheet Performance Strategies During Competition Date: Item Item Item Item Goal setting 1 Emotional 2 Control Automaticity 3 9 10 17 18 25 26 11 19 Relaxation Self-talk Imagery Attentional control activation 4 5 6 7 12 13 14 15 20 21 27 28 29 22 23 30 31 8 16 24 32 Total Total/20 x100 Ideal Performance State (IPS) • Athletes can‘t control whether they get into flow but they can set the stage to make it more likely to happen through Mental Skills Training (MST). Ideal performing state refers to attributes or qualities we want athletes to develop in order to be mentally ready for training and competition. Ideal Performance 235 State (IPS) is the ability to play one‘s best in any situation, particularly when encountering problems, adversity or failure. IPS is a constellation of all the ideal attributes combined in a way that brings out the best in performers when they have the most at stake. The coach can make use of the IPS form in order to monitor the athlete‘s performance and make sure the ideal mental conditions prevail. Positive Environment • A positive environment is characterized by : • Personal satisfaction Strong team identity Team cohesion Effective communication There are at least five ways to assist in the development of a positive environment : Plan for long term involvement in sport Offer multiple incentives Set goals Develop team harmony Communicate effectively Plan for long Term Involvement in Sport • When you plan for long term involvement in sport, you are also taking steps to give athletes a sense of personal satisfaction. For sport to be personally satisfying it must continuously change expand and progress. Athletes might experience personal satisfaction in sport by: • Continually improving their performance level Contributing as a leader in the organization Becoming more self-directed and depending less on coaches. Offer Multiple Incentives - There are various ways of offering multiple incentives such as recognize achievement in areas other than performance: 236 Effort – put forth in training and competition Skill development – improving skill and rate on improvement Task execution – supportive behavior such as attendance and punctually. Work volume – the amount of work completed. Performer interaction – positive relationship among team members. • Coaches should also use social acceptance, recognition, responsibility, advancement, or growth within the sport as incentives. • Set Goals - When you encourage athletes and coaches to set goals to exchange thoughts, aspirations and idea, you are developing a positive environment. In addition, the goals provide direction for the team. • Both team and individual goals can be used to deal with discipline issues. Focusing on goals, rather than on an athlete‘s violation avoids accusation, reduces the chances that the athlete will get defensive and gives the athlete a chance to explain his or her side of the story. In using this approach, you should: Focus on team goals Discuss the means of attaining these goals Described how the athletes has been neglecting on violating these goals • • • Develop Team Harmony - Team harmony refers to positive interpersonal relationship among team mates. It is characterized by effective communication, respect for one another, a feeling of closeness, a friendly atmosphere, mutual acceptance and mutual encouragement. For team harmony to develop, athletes must appreciate and understand one another, communicating honestly and sharing ideas, philosophies and goals is the first step in developing team harmony. The following strategies may be used to develop team harmony. Use a specific discussion starter. A sample questionnaire could be used as a discussion starter. Have athletes fill out the forms individually and then facilitate the sharing of responses in a group. The discussion should lead athletes to see how they depend on one another. Team slogans or sayings - Another way to highlight interdependence is to have athletes come up with a team slogan or saying. Here is one way to develop such a slogan: The team divides into groups of 3 or 4 237 Each group develops a slogan Each group present slogan to entire team Athletes discuss the value of each slogan The team develops one slogan that combines the strengths of each group‘s slogan • The process is more important than the slogan. It is discussion and sharing that leads to team harmony. • Reciprocal Teaching - This technique provides athletes with an effective way to coach one another. It transfers the responsibility for instruction to athletes. The role of the coach is to guide positive interactions among athletes. Reciprocal teaching facilitates the development of effective communication and mutual acceptance. • It is important to practice reciprocal teaching systematically otherwise feelings may get hurt, and discord may occur. Athletes must adopt attitudes of cooperation, appreciation, responsibility and interdependence. • Communicate effectively - Effective communication is both a product of and a contributor to a positive environment. Athletes should be encouraged to: Listen well Speak clearly Stay expressive Encourage one another during practice and competition Achieving excellence in Sports • Mental Skills Training has been approached from a variety of perspectives and has been studied as a cognitive process, as an educational aid, as a diagnostic or therapeutic tool, in conjunction with the various forms of altered 238 states of consciousness. Coaches and researchers have come to realize the importance of the function of the brain in planning and controlling skills. • They have noted that the mind is a virtually untapped reservoir in terms of its relationship to and control over many bodily functions and processes. Hemery (1990) states that your state of mind directly affects how you perform. Your body responds to your thoughts. If you are aiming for peak performance you want to be in a state of readiness: mentally and physically you want to be neither too tense nor too relaxed. Implementing Mental Skills Training • Most athletes have developed core mental skills to a sufficient degree that they can function well in day to day situations or even in low- level competitive events. But when confronted with more demanding, pressure packed situations, they may falter. This can be most frustrating to athletes and their coaches because they know they have the potential to perform well. • Not recognizing that the performance problems are due to a lack of mental skills, coaches may encourage athletes to work even harder on their physical skills. A gymnast may spend extra time on an apparatus. A basketball player may spend extra time shooting free throws after practice. Distance runners may pound their bodies even harder, sometimes to the point of overtraining. Indeed, some performance problems might stem from physical issues, such as inadequate training or poor biomechanics. However, in many cases inadequate mental skill could be the cause. A coach who does not know how to help athletes develop the necessary mental skills usually does one of three things, tries to support the athletes with empathy and encouragement, select another athletes who may be less talented physically but can perform better under pressure, or aggravates the problem by placing more pressure on the athlete to begin performing up to his or her capability. The alternative of course is to capitalize on advance in sport psychology. Coaches from all sports are increasing recognizing that athletes can learn and improve the mental skills needed to achieve excellence in sport. Rather than leaving mental skills development to chance these essential skills by incorporating MST into their athletes training program. • Does Mental Skills Training (MST) Work? 239 • The idea that mental skills training can improve performance is not new. Even before the growth of sport psychology, some athletes were using MST technique. Today‘s coach recognizes that even small adjustment may have a huge impact on competitive outcomes. For example in sport where time is a factor, a fraction of a second can make the different between a first and last place finish between a great and subpar performance. Mental skills training may be what it takes for athletes to shave that fraction of a second. The record breaking performances of the future will be achieved not by athlete who only training harder physically, but by those who also train smarter mentally. • Research evaluating the effectiveness of MST programs draws the same conclusion: mental training can improve performances across a wide variety of sports. In fact, as many as 85% of the studies conducted to evaluate MST showed positive performance effects (Greenspan & Feltz 1989; Meyers, Whelan & Murphy 1996; Vealey 1994, Weinberg & Comar 1994). In general, he consensus of sport psychology research, coaches and athletes is that mental skills training can enhance performance. What Are Mental Plans? • Pioneered applied sport psychology by Terry Orlick (1986), mental plan involves a series of systematic, individualized strategies designed to build mental skills into an athlete‘s game. Mental plans help athletes develop maintain or regain their flow mind-set so that they can remain mentally tough during the ebb and flow of competition and play their best. Mental plans are a means of implementing mental training tools and skills so that your athletes become more systematic in their mental, as well as physical, approaches to practice and competition. • Mental plans designed to prepare athletes for practice and competition (mental preparation plans) consist of steps to help them reach the mental state needed to perform their best. Athletes move deliberately through the steps – which might include goal setting, self-talk, imagery, energization, or any other mental training tool or skill – in an order that helps them personally create a flow mind-set. Mental plans for use during practice and competition include steps designed to maintain a flow mind-set and reach critical goals. Athletes also need to develop mental plans to help them get back on track when things go wrong in practice or competition. Mental plans should become routines that your athletes follow to combine mental and physical skills in order to enhance performance. They differ from the inflexible and impractical superstitious ritual that many performers blindly follow. Such rituals control 240 the athlete and prompt repeated robotic behavior that cannot enhance performance (e.g., put left sock on before right, or jersey before shorts; never step on lines when walking to or from the mound; always warm up with the same partner), whereas athletes are in control of mental plans and can be use them to realistically promote better performance. Mental plans are based on sound research and theory and are designed to help performers promote, sustain, and regain a flow mind-set. They enhance automaticity and mental toughness, thus helping athletes perform optimally in pressure-packed competitive situations. Mental plans are athletes‘ blueprints for excellence. Critical Mental Situations in Sport • Identifying mental distractions in sport - An analysis and study of mental distractions in sport is vital so that athletes are not derailed in achieving optimum performance. The coach must be able to help the athletes identify the internal as well as the external distractions affecting athletes during competition. • An exercise or activity must be done in order to identify the distractions and minimize their influence on performance. This activity is further reinforced by suggesting coping measures to the distractions faced in competition. Examples of distraction in sports: Unable to sleep Thinking of former loss High expectations Lack of confidence Fear of failure Off-site pre-competition strategies • A pre competition strategy contains all the behaviors which need to be performed prior to the commencement of the competitive performance. The central feature of the strategy is preparation for all circumstances so that a player‘s attentional control is maintained towards goal achievement. • Normal planned routine prior to arriving at the competition venue is categorized as the off-site pre competition strategies. • Factors to be considered during this phase of competition should include: Wake-up procedures 241 Events of the day Rest Maintaining confidence Control of activation Self-oriented thoughts Method of eliminating anxiety and negative thoughts On-site Pre-competition Strategies • The interval between arriving at the competition site and starting the competition is crucial. At this time, athletes are susceptible to the influence of minor events. The primary concerns at this site are completing preparations, controlling emotions and focusing thoughts. • At the competition site, the activities preferred should constitute competition preparation. The amount of time for doing that is planned. The preparation for competition should be planned, practiced and predictable (planning and coping strategies. • The activities at this stage should focus on task relevant factors and to deny any distractions. Pre-competition activities include: Determine when to report to the coach Breathing Exercises Relaxation Exercises Physical Warm-up Mental Rehearsal Simulation Exercises Using positive self-talk Monitoring activation Distractions control Refocusing Competition Strategies • The purpose of a competition strategy is to develop sufficient information and mental activation to consume totally the time of the competition. The 242 opportunity for distractions to occur is minimized if a proper attentional focus is achieved. The activities at this stage include: • Concentration on task relevant factors • A major potion of any competition strategy should involve concentration on the technical aspects of the activity, such as: • Skills Plays Offensive moves Defensive moves Pacing Other relevant tasks Cue Words Studies have shown that actions are accelerated when an individual thinks of selfcommands. If a player wants to be fast in action, then he should think fast word while performing. If a player wants to be strong, then he should think strong words at the appropriate time. Thus, the assertion that ―how you think is how you perform. Think of performance as a number of moods‘ or performance quality such as speed, strength, balance, stability, agility, persistence or power. Use strong words to control mood of actions in performance. Some common cue words are listed below: Strength : Crush, solid, force, squash, powerful and muscle Power (force) : Heave, smash, blast, bang, and explode Speed : Fast, alert, whip, flick, jab, smack, thrust and dash. Persistence : Press, pressure, drive,drag,smother,and continue. Confidence :Great,bold,push,superb,beautiful,fantastic and concentrate. o Balance : Solid, firm, anchored, rigid, block, and hard. o o o o o • Positive Self-statements - These are positive statements which encourage the player to continue with the performance. Positive self-statements should be used at critical times in a performance when fatigue is increasing, during a session of lost points and during a monotonous period. 243 • Segmentation - In sport which spans a long duration such as hockey, football, marathon running, and distance swimming, it is difficult for players to be flexible and to adjust to situational tactics if the final outcome is the only goal. Segmentation is a strategy to avoid fatigue and boredom by breaking into phases, parts, sets, ends, etc. • Benefits of a competition strategy. Cope with pain Cope with fatigue Recover from a loss of concentration Control anger Types of Mental Plans • The role of mental plans is to develop, maintain and regain a flow mind-set. Mental preparation plans help performers create a flow mind-set before practice and competition. Mental performance plans help athletes maintain their flow mind-set while practicing and competing. And mental recovery plans help competitors regain their emotional composure and get back into a flow mind-set when they‘ve been taken out of their game. Mental Preparation • Mental preparation plans help your athletes warm up mentally by using a structured routine to promote a flow mind-set that will enable them to practice and play at their best. Most athletes find it helpful to integrate their best. Most athletes find it helpful to integrate their warm-up into their physical one, thus readying their mind and body together. Preparation plans include a basic plan for ideal conditions and a backup plan for use when the warm-up is constrained by time or circumstance. Your athletes‘ mental preparation plans should be designed like a pilot‘s preflight checklist-to be worked step by step. Preparation plans for practice and competition should be quite similar, with changes made only in those steps that must differ based on the situation. This continuity helps athletes seamlessly transfer skills from practice to competition. • Mental Performance Plans 244 • Mental performance plans are used during practice and competition to help athletes perform their best by maintaining and using their flow mind-set. They typically include a standard mental performance plan for use when things go well and backup mental performance plans to cover several common contingencies when problems occur or when the standard plan proves ineffective. Standard mental performance plans focus on athletes‘ goals for practice or competition and on action plans for attaining them. These plans are usually tailored to one of three main categories of competition: races or routine, self-paced tasks, and interactive sports. For races and routines, standard mental performance plans focus on developing specific strategies to maintain a flow mind-set during each major segment of the event. Self-paced task (e.g., golf, field events, archery, basketball free throws and tennis and volleyball serves) are repetitive, and athletes should construct and automate pre-performance and between-performance routine that will happen, standard mental performance plans should focus on strategies for anticipated critical points the contest (e.g., last 3 minutes of the game, or first play after a timeout) or for reacting to specific good or bad performance trends (e.g., after a turnover, or a run of point) plans can be devised for interactive sports with breaks in the action, such as tennis and American football. Backup mental performance plans emphasize overcoming specific problems that regularly arise, or adjusting goals to get the most out of practice or competition in the face of trouble. Problems in practice might include sluggishness due to lack of sleep, a lack of focus, or a coach‘s bad mood. Problems in competition might include a large early deficit, an unruly crowd, of fallout from a key mistake. Backup mental performance plans help athletes forge ahead even when conditions are not optimal. Mental Recovery Plans • Backup mental performance plans address recurring or predictable problems; mental recovery plans help you recover from unexpected or uncommon setbacks where you become emotionally flustered and get taken out of your game. Mental recovery plans don‘t necessarily allow performers to completely return to form, but they do help them make the best difficult situations and perform as well as circumstances allow. A mental recovery plan is a simple routine designed for the wide range of unexpected practice and competitive situations that occasionally catch competitors off guard and cause them lose composure (e.g., distracting nonsport problems, controversial officiating decisions, trash talking by opponents, or stupid mistakes of their own). Mental recovery plans are general in design to provide a standard coping routine that can be used regardless of the problem that caused the loss of composure. Developing Thinking Players 245 • Tactics - This is the ability to use specific strategies in a match to give your team an advantage: • • • • Strength and weaknesses of the opposition Strength and weaknesses of your team For a tactic to be successful: Your players understand the reason for such a tactic The players involved understand the specific roles they must play your players is capable of fulfilling the role required to use the tactic Tactics can be applied to many situations in the game such • • • • • • • • At an individual level To a group level To the team as a whole When your team has possession When the opponent has possession At the restarts or in open play In particular areas of the pitch During particular phases of the game Examples of tactics • • • • • • • • • Reduce players effectiveness by using man to man marker Force the ball to a particular part of the pitch Stopping the play when the opposition have the ball Placing high pressure on a particular opponent Forcing a particular opponents to drag one way Using overhead into a specific zone of the ground Closing off a game Using very wet conditions to advantage Using a psychological weakness of an opponent to your advantage Match Plan - A match plan is like a blueprint of what you would like to happen in a game. Contents of match plan: • • • The style of play required for the match Specific tactics and strategies Set price discussion making sure all players are clear of their involvement 246 Pointers to a Match Plan: • • • • Predicting what will occur in match is very difficult. However with good planning the match can be orchestrated in an effective way Be realistic when setting up a match plan Should be given at least 2 hours before match Allow for creative thinking and on filed decisions. Match Plan - Use of video • • • • • • Able to watch the movements (with the ball / off the ball) of a talented players, to plan a tactic to close off the player Better prepared to attack or defend pc Attacking patterns of opponents Defensive positions of opponents Better understanding of opponents patterns Analysis of competitive situation Mental Warm Up Sport and exercise psychologists have long studied the causes and effects of arousal, stress and anxiety in the competitive athletic environment. Many professional managers and coaches are interested in the physiological and psychological benefits of warm up. We are traditionally used to the physical warm up as a means of physical and mental readiness prior to competition. In order to perform at peak level, you want to be in a state physically. it is highly evident that a good physical warm up often regulates the physical and physiological signs associated with activation or arousal of the body. It is the mental components which have yet to be addressed effectively prior to competition. Relaxation routine • • • Sit comfortably in a relaxed position with your back straight, your legs apart, your feet flat on the floor Inhale slowly and deeply through your nose as you expand your abdomen Hold your breath for a count of 10 second 247 • • Exhale slowly through your nose, pull your abdominal muscles in as you push all the air out of your lungs Now slowly inhale again and repeat the sequence practice this for 2-3 minutes Self Talk - The feeling of being positive during competition can determine the rate of success or failure. Examples of positive statements. • • • • • • I am a strong and fluid athlete I am as good as any other athlete at the competition today I am confident and ready I am in control and focused Enjoy training and competing I am successful and winning Imagery - Imagery refers to the process of seeing yourself on a screen in your mind‘s eye, consciously evoking and guiding thoughts in which you appear towards a specific and successful conclusion. Now imagine yourself on the site where you are going to perform, See yourself performing different skills with accuracy and precision. See how aggressive and energetic you feel out there. You feel so confident and in control. Your passes are accurate and you feel physically fit as you fight for ever opportunity that arises. See yourself encouraging your teammates with positive words and praises. Everybody is giving their 100% out there and enjoying it. The Mental Skills Training Approach We‘ve discussed the importance of psychology factors and the benefits associated with MST but have yet to describe mental skills training approach that provided the foundations for the rest of the book. MST is the systematic and consistent use of mental training tools – goal setting, imagery, relaxation and energization, and self-talk, to build the mental skills, or psychological attributes that coaches want their athletes to have - motivation , energy, management, attention, stress management, and confidence. The fundamental premise behind MST is that using mental training tools or techniques can enable athlete to develop the desired mental skills (see figure 3.2). Stated another way, mental skills are the end products we are trying to achieve to enhance mental toughness and create a flow state of mind. Mental training tools are the methods used develop athletes‘ mental skills (Vealey 1988). 248 Table 3.1 illustrates a few of the potential applications of each mental training tool and how it affects several mental skills. For example athletes who find it hard to maintain motivation during off-season training can use goal setting to provide a sense of direction and purpose in their workouts. Goal setting may also help them develop other mental skills. As they make progress toward attaining their goals, their self-confidence increased. During the season they may begin to set goals to improve not only their physical skills but also their mental game. As they become proficient at goal setting, their personal goals become the standards by which they evaluate success and failure. Setting goals based on improvement and skill mastery – rather than judging success and failure exclusively in term of winning and losing-may help dissipate some of the pressure athletes feel when competing. Table 3.1 Using the Four Mental Training Tools to Develop A athletes‘ Mental Skills GOAL SETTING Setting realistic but challenging short-term goals provides a sense of direction, thereby increasing motivation as reflected in increased effort and persistence Challenging, realistic goals help athletes get into their optimal energy zone and direct that energy to the task at hand. Effective goals direct athletes attention to what they need to focus on to succeed Although striving to win is important, focusing on winning can create excessive stress. When athletes perceive the challenge not as winning but as achieving their own realistic set performance goals, the challenge will always be near the athletes present skill level and will create on optimal skill challenge balance Consistent goal attainment raises self-confidence IMAGERY Teaching athletes to image themselves attaining their goals help raise their motivation By imagining previous strong performances, athletes can identify their optimal energy levels and strategies for getting into an effective energy zone prior to performing Using imagery effectively requires the ability to focus on desired images and thus can be used to develop attentional skills Imagery can be used to help athletes manage competitive stress. Athletes are less 249 likely to experience elevated stress if they have imagined themselves dealing effectively with obstacles and unanticipated events that create stress RELAXATION AND ENERGIZATION Learning to energize when feeling flat and developing the ability to relax when over aroused can help build motivation Relaxation and energization technique can help athletes consistently enter and stay in their attention to the task at hand. Relaxation and energization techniques help athletes improve their concentration skills Learning to purposefully relax when experiencing stress can help athletes manage their emotions. And energizing techniques can be used when athletes feel that lowlevel stress is preventing them from getting into their ideal mental state for performing By learning to control their energy levels through relaxation and energizing athletes will develop a sense of control which in turn enhances self-confidence SELF-TALK Athletes can use self-talk to help motivate themselves Self-talk can either raise or lower energy. Athletes can use effective self-talk strategies to reach their ideal mental state before competing Focusing on task relevant cue words can help athletes focus their attention or regain focus if they are momentarily distracted Stress level is strongly influenced by athletes perception and interpretations of event that happen before and during competition. Athletes can use self-talk to develop a positive outlook on event that normally result in elevated stress Positive self-talk can be used to raise self-confidence, whereas negative self-talk can lower it. Periodization Approach To Mental Training. Periodization refers to the process of dividing the yearly training plan into periods and phases. A periodization approach to mental training refers to integrating mental training into yearly training plan in such a way that the mental training objectives are compatible with the objectives of the other training components. It 250 does not make sense, for example, for a basketball team to emphasize precompetition preparation and competition strategies at the start of the seasonplayers are mainly building general fitness. The conceptual model presented supports a periodization approach to mental training. In this process, athletes first learn a basic mental skill such as relaxation (in a quiet darkened room). Then they learn how to adapt it to a sport (for instance, taking a penalty kick, using a brief breathing technique to relax before each kick in practice). Finally, athletes develop a strategy for using relaxation in a game situation (using progressive relaxation before a game, taking centering breaths as they walk on to the field, then shaking out their legs just before the kick). The coach must be aware of the different focus during each phase of the training period. • The General preparatory phase focuses on the evaluation of mental skills as well as learning basic mental skills • The Specific preparatory phase will focus on adapting and practicing mental skills in sports-specific situation and to maintain basic skills • The Pre competition phase will develop and practice focus plan, use focus plan in simulations and maintain basic mental skills • The Competition phase will evaluate and refine focus plan, use mental skills to prepare for specific opponents and competitions, use mental skills for stress management • The Transition phase will focus on the use of mental skills to aid regeneration and lower stress, maintain fitness and prevent staleness through recreational activities. Enhanced Enjoyment In addition to improving performance, MST can be a great tool for increasing athletes‘ enjoyment and enhancing their ability to find satisfaction and fulfillment in their demanding sport activities. Training can be difficult and athletes may experience excessive stress or struggle with the pressure of competition. Learning mental skills can help athletes handle competitive stress and feel selfconfident, thus enhancing both their performance and enjoyment of their sport. If one of the tenets of your coaching philosophy is for athletes to enjoy their sport experiences, MST can help. Strong Life Skills Mental skills training also facilitate athletes‘ personal development. Mental training lends itself well to a philosophy aimed at athletes‘ growth and development-physical, mental, social, moral and emotional. In fact, mental training is training in life skills such as learning how to set goals, how to handle 251 pressure and criticism and how to stay focused on the task at hand. These skills can enhance sport performance but they can also improve performance in any achievement area – school, music, theater, or career. Those who believe deeply in the value of sport often claim that it can help teach young people how to become leaders to be more self-confident, to develop better interpersonal skills and to exercise self-discipline. But these potential benefits of sport participant do not happen automatically coaches must structure athletes sport experiences to help athletes gain these psychological benefits. Mental training provides a framework for the development of athletes‘ life skills. Practical • • Chart the Mental Skills Training in your periodization plan. Explain why you choose these skills in your training. Plan a short term and long term mental training for your athletes. “When I meet a man I never think of race, colour and religion but I feel that I have met another member of my human family” “If we cannot love the person whom we see, how can we love God, whom we cannot see” UNIT 9 MOTOR BEHAVIOUR 252 NO 1. 2. Contents: TOPIC Augmented Feedback in Learning Kinematic Feedback and Feedbacks 253 other 3. 4. 5 Retention and Transfer of Learning Conditions of Practice Facilitating Learning and Performance 1. Augmented Feedback in Learning Feedback is that class of sensory information that is movement related, and it can classified into two basic categories (intrinsic to the task ) and augmented (supplementary to the task). Tow major classes of augmented feedback are Knowledge of Performance (KP), and Knowledge of Results (KR), which is information about verbal post movement information about performance outcome. Much research suggests that information about performance is the single most important variable for motor learning (except for practice it self).Information about the learner’s movements (KP) can be given through videotape replays, recordings of the force-time characteristics of the movement (kinetics), or representations of the movement trajectories (kinematics); and all these appear to be best when it precisely specifies information which is critical for movement efficiency and that cannot be obtained from other sources of feedback.KR precision refers to the accuracy with which the KR is given. Performance improves with increases in precision up to a point, with no further increases in performance thereafter. Presenting combinations of qualitative and quantitative KR, based upon a goal related band with of correctness, has both strong applied and theoretical merits. Early research indicated that the relative frequency of KR (the percentage of trials on which KR was given) was irrelevant for learning, whereas the absolute frequency (the number of KR presentations given) was the critical determinant. More recent data using transfer designs contradicts this position, indicating that both are clearly important. Trials on which no KR is given appear to contribute to learning in the task, but not as much as the KR trials do. The trials-delay and summary-KR procedures, in which the KR for a given movement is separated from the movement by other trials, were shown to 254 produce detrimental effects on motor performance, but positive effects on learning. Augmented feedback appears to have several possible mechanisms for enhancing learning. It acts as information. It acts to form associations between movement parameters and resulting action. And it acts in a motivational role. Augmented feedback also has guidance property that can degrade learning. • A learner can receive various kinds of sensory information during skill rehearsal • But, Augmented, Extrinsic feedback about errors provided by the instructor is one of the more important sources of information • Instructors often present feedback verbally (telling individuals what they did correctly and incorrectly), but they can also present feedback in other forms, such as visually (video replays). • Instructional feedback is best when it is simple and when it refers to only one movement feature at a time, particularly when that feature deals with something that the learner controls. Extrinsic Feedback can Serve the following simultaneous functions: Energize individuals and increase their motivation . Reinforce learners for correct performance or discourage incorrect performance. Provide learners with information about the nature and direction of their errors and suggest ways of correcting them Make learners so dependent on the feedback that their performance suffers when the information in withdrawn 255 2. Kinematic Feedback and other Feedbacks • Athletes can gain information about many aspects of their own movements through various sensory channels • These forms of information are inherent to the normal execution of a particular movement • Sometimes the performer knows that something has gone wrong before the movement is even completed • In many situations, this inherent feedback requires almost no evaluate at all (e.g. missed the ball in softball) • But other aspects of inherent feedback are not so easily recognizable, and perhaps the performer must learn to evaluate them (gymnast) • It would certainly seem reasonable to think of videotape replays as a powerful mode in which to present KP • From a motor skills viewpoint, replays will contain a record of many of errors made, and the individual can detect these directly and attempt to correct them on the next trial • Video replays should probably be augmented by an instructor who can pick out the important details and can instruct the learner to ignore the irrelevant aspects. • Feedback about kinematics involves various measures derived from movement such as position, time, velocity, and patterns of coordination • Effectiveness of kinematics feedback depends on the nature of the task goal • Biological process (e.g., blood pressure, breathing rate, EMG) are measured electronically and used as feedback 256 • Kinetic Feedback is about the force characteristics of a movement (e.g., starting block for sprinter) • Descriptive Feedback – Feedback that describes the errors made during the performance of a skill • Example: You performed 5 out of 10 hits correctly • Conveys relatively little useful information • Prescriptive feedback provides learners with information they can use to make more effective corrections in their subsequent movements • Example: In the next hit, you need to swing the bat faster • Prescriptive feedback is more useful to learners than descriptive feedback. • Practical Give one example each of learning a skill in your sport to Compare Descriptive Feedback and Prescriptive Feedback to the learners. 3. Retention and Transfer of Learning To understand how the motor system is structured so that skills can be produces “on demand” and practical because usually much time and effort have gone into the learning of the skills • Memory Motor memory is the persistence of the acquired capability for performance A skill has been learned if and only if it can be retained relatively permanently If we can still perform a skill after not having practiced it for a year, then we have a memory of the skill 257 Memory is the capability for performance, not a place where that capability is stored • Forgetting Refers to the loss of such capability Loss of memory and is a concept of theoretical rather than a behavioral, level of thinking • Retention and Transfer Retention refers to the persistence of lack of persistence of the performance, is considered at the behavioral level rather than at the theoretical level It might tell us whether or not memory has been lost Retention test usually involves retesting subjects on the same task or conditions Transfer test has subjects switching to different tasks or conditions • Absolute Retention, a measure of retention based on the level of performance on the retention test • Different Score, most common relative-retention score taking the difference between the performance level at the end of the originallearning session and the beginning of the retention test • Percentage Score, the difference score divided by the amount of change in performance and multiplied by 100 from the original-learning trials • Transfer of Learning 258 Whether practicing a task would produce benefits or losses ( or neither for another task). Example : Badminton to Tennis, Squash to Badminton; Gymnastic to Break Dance) Transfer experiments ( 2 groups, Group A-Task A + B, Group B – task B only) Positive Transfer – The gain in capability on one task as a result of practice or experience on some other task. Negative Transfer – The loss in capability for one task as a result of practice or experience in some other task 4. Conditions of Practice • Attempts to understand the many variables that determine the effectiveness of the conditions of practice. • The most important condition is the Amount of Practice • More learning will occur if there are more practice trials • In structuring the practice session, the number of practice attempts should be maximized • Deliberate practice in terms of “activities” that have been specially designed to improve the current level of performance • Deliberate practice requires effort and is not inherently enjoyable • Individuals are motivated to practice because practice improves performance • Pre-practice Considerations - Factors that have been shown to operate before the practice session begins: 259 Motivation for learning Important that people be motivated to learn a motor task in order for maximally effective learning to occur If the motivation level is too low, people might not be sufficiently motivated to practice at all; or no learning would be the result. Making The Task Seem Important It is important that the learner see the task as one that is desirable to learn A person might be much more interested in learning the skills after seeing them performed by role models in world-class competition. Goal Setting Performers try to attain goals that are set before they begin practicing “Do your best” goals are not as effective as other types of goals Specific, difficult goals produce better performance than either no goals Short-term goals and a combination of short-term and long-term goals facilitated performance as compared to long-term goals only 260 • Verbal Information - To give a person some sort of “idea” or image of the task to be learned, videotapes, verbal instructions, and demonstration are important Instructions Most common ways to give students on initial orientation to the new skill is through verbal instruction Instruction can also provide useful and important information about the movement itself Instruction can emphasize the ways in which one can recognize one’s own errors Perceptual Pre-training Give the learner exposure to the stimuli that will be experience in the task Modeling One important way to facilitate learning is to demonstrate the skill so the learners can directly observe the elements of the action • Use videotape or photos of skilled performers Distribution of Practice Massed practice means put things together, running work periods very close together with either no rest at all or very brief rest intervals in between 261 Distributed practice means spacing these intervals of work apart with longer periods of rest Given constant periods of work, short rest periods depress performance relative to longer rest periods The longer the rest period, the better performance Continuous practice would likely cause muscular fatigue to develop, and this fatigue could be expected to depress performance Another factor that has been shown to effect learning is the amount of variability in a practice sequence Many task have variability inherent to them (open skills) This effect is not so obvious, especially when the task involves Closed Skills One way to obtain on indication of the effect of practice variability is to assess retention performance, after a period of time The effects of practice variability seem to depend on the nature of the learners (age) College women profited from practice variability much more than college men did • Mental Practice Mentally practicing a skill (i.e., imagining performing it, without any associated overt actions) can be shown to produce large positive transfer to skill in the actual task • Part Versus Whole Practice 262 A very common techniques for teaching motor skills is to break them down into smaller parts, to eliminate the burden of repeating the simpler parts of the entire task This would be seem to be an effective procedure when the task is very complex and cannot be grasped as a whole If practice is given on the part, it would certainly transfer highly to the whole task, as the part would seem to be identical to one element of the whole • The “traditional” methods of continuous drill on a particular action (i.e., practicing one skill repeatedly until it is correct) are probably not the most effective way to learn • Practicing a number of tasks in some nearby randomized order will be the most successful means of achieving the goal of stable learning and retention. • Principles of Practice Specificity We should attempt to match those conditions in acquisition practice with those expected Distributed-practice conditions were better for retention than massed practice In relation to the contextual interference effect, random practice produces better retention performance than blocked practice • Practical You are the coach teaching Receiving Skill to the new under 16 boys Volleyball team. Group 1 – Blocked Practice (one feeder, toss ball up, 60 trials) 263 Group 2 – Random Practice (3 sub-groups, one toss ball up (20 trials), one throwing (20 trials), one hitting the ball to receiver (20 trials). Questions for discussion: Which group of practice resulted in better performance during acquisition? Why? Which type of practice resulted faster learning after one training session? Practical 2 Catching Stone (Male vs. Female) Applications: Pre-practice Considerations Blocked Practice & Random Practice 5. Facilitating Learning and Performance To design an effective plan of instruction, practitioners must know something about the: • Background • Abilities • Experiences of learners • The underlying mechanisms of human performance • The learning goal and target context • Feedback Table 1: Checklist for Diagnosing a Learning Situation Who? What? Where? 264 Learner Characteristics Task (Target skill) Target context Characters o Age o Previous experience o Motivation o Stage of learning o Abilities o Attention o Arousal o Memory o Information –processing capability Goal(s) of Learning o Discrete, serial or continuous o Motor or cognitive o Closed or open o Closed-Loop control o Exteroceptive feedback o Proprioceptive o Recreational o Competitive o Clinical o Home o Presence or absence of others feedback o Open-loop control o Motor program o Generalized motor program o Program Learning o Parameter learning o Error detection and o Spatial accuracy correction o Temporal accuracy o Skill refinement o Object manipulation o Generalization o Information-processing o Speed accuracy tradeoff demands o Risk of injury Table 2: Checklist for Designing the Learning Experience Practice Preparation Practice presentation 265 Practice feedback o Goal setting o Clarifying expectations o Intrinsic feedback o Outcome goals o Managing arousal o Extrinsic feedback o Performance goals o Focusing attention o Knowledge of results o Process goals o Providing instructions o Knowledge of o Stage of learning o Providing o Transfer of learning o Target skills o Target behaviors o Target context o Performance measures o Simulations o Outcome o Part practice o Process o Slow-motion practice o Error detection practice o Amount of feedback o Providing mental o Average feedback practice o Summary feedback o Procedures o Precious feedback o Imagery o Frequency feedback Practice structure o Schema development o Constant practice o Varied practice o Facilitating transfer o Blocked practice o Random practice o Consistent and varied performance demonstrations o Instructional decisions o Offering guidance o Type of feedback o Providing physical o Program or parameter practice o Visual. mapping 6. Applying the Principles of Skill Learning 266 Verbal, manual o Descriptive or prescriptive or Suppose you are a coach teaching a tennis team. If you are teach your players to serve in tennis. 1. How do you determine if they are actually learning what you are taught them? 2. What will you look for to assess their progress in learning to serve? 3. How can you be certain that what you are observing is the result of learning and not just luck? A solid understanding of the principles and process underlying skill learning and of the factors successful practitioners consider when diagnosing, designing, and assessing a person’s learning experience. However, the best way to evaluate your comprehension of this information is to see how well you can apply it in providing instructional assistance for an actual learner (athletes). How do you think you might respond to the challenge? How well can you diagnose a learning situation? How well can you design a learning experience? How effectively can you assess that experience? What type of rational and research documentation might you offer in support of your decisions? • Practical Based on your own sport and refer to the components of the conceptual model of motor performance (Table 1). Identify those components that might be relevant for skill learning in your sport. Once you have identified the factors that are relevant to your chosen skill, decide how you might design the learning experience, in other words, determine the instructional options listed in Table 2 that might promote the most effective goal achievement for your athletes. You might want to make several photocopies of this table on which to make notes as you proceed with this task. The following are questions you might consider in designing the learning experience: 267 How will I establish communication with the athletes? What types of outcome, performance, and process goals do we need to set? Will I need to assist the athletes in managing arousal? If so, how? Will attention focus be an issue? If so, how might I promoter an optimal focus? What types of practice do I need to provide? How might I go about structuring practice? How might I go about providing feedback? Assessing the learning experience – The final piece of the working strategy pertains to assessment. If we can evaluate improvement in skill learning accurately, we will be able to provide the athletes with helpful information about achievement as well as feedback about possible adjustments to make performance even better. Thinking good thoughts, precede good actions. “ If you judge people, you have no time to love them” 268 UNIT 10 SPORTS MEDICINE 10.1 Rehabilitation of sports injury (1 hour) 10.1.1 Definition Rehabilitation is defined as the process of restoration of the injured athlete to full function as required by the sport. 10.1.2 Components of Rehabilitation a) Muscle Conditioning b) Flexibility c) Neuromuscular Control d) Functional Exercises e) Sports Skills f) Correction of Abnormal Biomechanics g) Maintenance of Cardiovascular Fitness h) Psychology *Integration of Individual Components into a progressive rehabilitation program 269 10.1.3 Stages of rehabilitation a) Initial Stage: (from onset of injury to full, pain-free ROM) RICE Treatment & Electrotherapy – for pain relief and minimising swellingIsometric Exercises, followed by Active and Passive ROM exercises – to improve ROM and activate and strengthen muscles; Type of activity, duration, Frequency, Intensity and complexity depends on pain-free ROM. Start with non-weight bearing (NWB) exercises and progress to partial and finally full weight bearing (FWB) – incorporate proprioceptive exercises for stability and improves strength Resistance exercises with theraband / light weights – helpful in strengthening and endurance training. *Photos – Isometric exercises, passive ROM, balance board, light weights, theraband. b) Intermediate Stage: Prerequisites: Ability to resume activities of daily living, much improved ROM and reasonable strength. Increase in frequency of active and passive ROM and initiate stretching exercises and joint mobilisation – to promote flexibility (realignment of scar tissue)Progressively increase the load & repetitions through the painfree ROM using free-weights, pulleys, theraband, tubing, exercise devices (exercise bike, treadmill, hydrotherapy, stair-climber)– to increase strength, power and endurance ; Progress to more functional, closed kinetic chain exercises – to promote weight bearing exercises Introduce more difficult proprioceptive and balance exercises progressively; Lower limb exercises: supervised walking, jobbing, striding and agility Upper limb exercises: supervised wiping exercises, ball balance exercises, wobble board exercises; Start sports specific activities without using affected limb: e.g. stationary shooting (basketballer with lower limb injury), footwork for badminton athlete with shoulder injury. *Other treatment modalities e.g. joint mobilisation, RICE, electrotherapy and massage therapy may be utilised to promote progress. c) Advance Stage: (commencement of functional activities related to sport until return to play) Prerequisite: good strength and endurance with full flexibility and ROM; able to do proprioceptive, agility and functional exercises without adverse effects; Muscle conditioning specific to activity of sports: power for sprinters and weight lifters (high load, low repetitions); endurance for distance runners or swimmers (low load, high repetitions); Fast-speed isotonic exercises and functional plyometric exercises; Progressive through a sequence of functional activities required for the sport: jogging, striding, bounding, agility skills of increasing complexity intensity and volume. Ball and racquet skills: stroke, lob, jab, smash; Identify biomechanical abnormality and technique faults (video analysis). Participate in 270 between 70-90% normal training load. Introduce more sports specific skills progressively. d) Return to play: If an injured athlete returns to play prematurely a) injury may be recurrent or chronic b) injury may worsen c) May predispose to other injuries An injured athlete may return to play once the following criteria has been fulfilled – completed specified duration of healing and supervised rehabilitation program; no persistent swelling and pain-free ROM; adequate strength and endurance, good flexibility, proprioception and balance; adequate cardiovascular fitness; regained skills, psychological mindset and training form for sports, corrected biomechanical anomaly (if any). 10.2 Medical Conditions in athletes (2 hours) 10.2.1 Asthma and Exercise Induced Asthma Bronchial Asthma: An attack of persistent cough, wheezing (high pitched breathing), chest tightness or pain; may worsen with physical exercise; Athletes with “Exercise induced asthma” has an asthma attack during or after physical exercise. May be triggered especially in the cold; during Upper Respiratory Infections (Colds or flu), exposure to allergens and irritants Require physical assessment and spirometry to determine severity and treatment options for good control. Treatment with Inhalers require TUE Exemption and oral corticosteroids and bronchodilators are not allowed. Oral Leukotriene Antagonists (Singulair) may be used as an alternative which does not require Anti-Doping notification. Treatment of chronic upper airway disease (e.g. Allergic Rhinitis and Chronic Sinusitis) has been shown to be beneficial. Return to play: if the athlete can breathe comfortably without asthma symptoms. 10.2.2 Gastrointestinal Problems Endurance runners often suffer from abdominal cramps and diarrhoea during prolonged moderate intensity exercise. This may be due to delayed gastric emptying time, diminished blood flow to the large intestine, reduced absorption of fluid during exercise. Other symptoms are heartburn, nausea, bloating, flatulence, rectal bleeding.Treatment: Reduce training load and anti-diarrhoeal medication. 10.2.3 Athlete’s Hematuria Prolonged running may also predispose to hematuria due to reduced blood supply to the kidneys and increased renal parenchymal permeation. Symptoms usually resolves itself with reduced training load or rest. 271 However, the athlete will need to be examined by a doctor to rule out other medical conditions. 10.2.4 Menstrual Problems Female athletes who suffer from dysmenorrhoea (period pain) may be offered options of timing of menses before or after a competition event. The athlete should consult a doctor at least 1 month before the event to ensure that intervention with oral contraceptive pills could be attempted. Endurance athletes may occasionally suffer from amenorrhoea (delayed period) due to hormonal changes associated with increased ‘mileage’ (duration of training). Prolonged periods of amenorrhoea should be treated to prevent osteoporosis. Such athletes should also be referred to the doctor and nutritionist if the Female Athlete’s Triad (amenorrhoea, anorexia, osteoporosis) is suspected. 10.2.5 Skin Infections Skin infections (e.g. tinea infection, impetigo, viral warts, herpes simplex) are common amongst athletes in contact sports (e.g. rugby, soccer, wrestling). Athletes with such conditions should be adequately treated and symptom free before return to play. 10.2.6 Sudden Cardiac Death Sudden cardiac death is an uncommon occurrence collapse and death in athletes during exercise due to various causes. Atheltes who are < 35 yrs old may have structural congenital heart lesion (hypertrophic cardiomyopathy). Athletes > 35 yrs old may collapse due to Coronary Arterial Disease. Other causes are heart valve structural problems or disease or arrhythmia. 10.2.7 Contraindications to sports In certain medical conditions, participation in sports may predispose the athlete to further harm and danger. It is the responsibility of the coach to identify situations that may put the athlete at risk and act accordingly. The coach must consult the Medical Officer if the athlete has the following contraindications: a) Absolute Contraindications Sensory: Detached Retina, Severe hearing loss (tympanic perforation), severe myopia, Seizure disorder (depends on sport), Concussion; Brachial Plexus Injury; Spine: Spondylosis, Spondylolisthesis, Cervical Spine Instability, Cervical Stenosis, Herniated Disc with Cord Compression; Abdominal: Enlarged liver or spleen, Active hepatitis, Inguinal hernia; General Illnesses: Acute Febrile Illness, Uncontrolled Diabetes, Severe and Moderate Hypertension, Cardiovascular: Coronary Arterial Disease, Valvular Heart Disorders, Cardiac Arrhythmias; Pulmonary: Pneumothorax, Hemothorax, Tuberculosis, Blood disorder: Hemophilia & bleeding tendencies; severe anaemia; Skin: Herpes Simplex, Measles, Chicken Pox, viral warts, tinea infection (fungal); 272 *NB: while active skin lesions, no direct skin contact or mat activities like wrestling (herpes gladiatorum), gymnastics, martial arts; Single Organ: Eye, Ear, Kidney, testicle (for contact sports) b) Relative Contraindications Hypertension, Diabetes Mellitus, hyperthyroidism, anaemia; impetigo; 10.2.7 Prevention of Infectious Diseases Infectious diseases can be transmitted during sporting activity. Modes of transmission in athletic settings include a) b) c) d) Person-to-person contact, Food & Water Borne Airborne/droplet spread Vector Bourne 10.2.7.1 Person-to-Person Contact: e.g. HIV, Hepatitis B, Herpes Simplex, Gonorrhoea, Syphilis, Candidal infection; Viral warts; Taenia Infection; Onychomycosis; Impetigo; Preventive measures: a) Vaccination (if applicable) b) Safe sex: single partner, barrier methods (condom), avoid unnatural practices c) precautions of contamination from wounds (gloves, wound dressing) d) personal hygiene 10.2.7.2 Food & Water Borne: Acute Gastroenteritis; Typhoid, Hepatitis A, Cholera; Preventive measures: a) b) c) d) Hand washing Drinking boiled water Hygienic food preparation and food handling Vaccination (if applicable) 10.2.7.3 Airborne / Droplet: Haemophilus Influenza A and B (flu), Coxsackie Virus; Preventive measures: a) b) c) Vaccination (if available) Avoid contact with ill athlete Hand washing and Personal Hygiene 10.2.7.4 Vector Bourne: Dengue fever, Chikungunya, Malaria, Yellow Fever; Preventive measures: a) b) c) Insect repellent and larvicide (e.g. Abate) Long-sleeve attire and mosquito netting Malaria prophylaxis: Malarone or Mephaquin tablets 273 d) Vaccination: Yellow fever 10.3 Medical Preparedness for competition and travel (1 hour) 10.3.1 Pre-event preparation Sports injuries and medical emergencies can be prevented with adequate preparation before the sporting event. The role of a coach is essential in ensuring that the risk of such injuries and emergencies are minimised. Role of coach: a) b) c) d) e) f) g) h) Ensure that athlete undergoes pre-participation medical examination and identify athletes with medical conditions Determine suitability of return to play for injured athletes Identify nutritional supplements and medication used by athletes and inform Medical Officer and notify Anti-Doping Agency (MASDOC) Appoint Medical Personnel responsible for the team Inform injury risk and medical conditions Prepare first-aid box, taping kit and coolman (Ice box) Identify medical facilities and support (include referral) available at the event Identify time for food intake, warm-up, cool-down and rest *Coaches are advised to undergo training for Cardiopulmonary Resuscitation Basic Training 10.3.2 Event Coverage a) Identify medical facility and person-in-charge at the venue b) Ensure that Medical Personnel is present during warm-up and cool-down c) Ensure that athletes are well-hydrated d) Ensure that open wounds are covered with wound dressing e) Tape injured parts before warm up and ensure tape is removed after cooldown f) Ensure that protective devices are properly applied by athletes g) Accompany injured athlete to hospital (if medical personnel is not available) 10.3.3 Preparation for travel a) Pre-participation medical examination to certify fitness of participation and to identify risk of injury and medical conditions b) Vaccination of team members (at least 2 weeks prior to travel) c) Briefing of team members d) Planning of duration of stay before competition to prevent jet-lag e) Sleep hygiene during travel: adjust to time of destination, avoid alcohol intake, carbonated drinks and fatty foods f) Prepare medical first-aid kit, taping kit and coolman (ice box) g) Arrange for Insurance Coverage during travel and competition *NB: Some insurance policies do not cover for participation in competitive sports 11. ASPECTS OF JET LAG – DIET WHILE TRAVELLING 274 One aspects of team preparation prior to touring overseas is the ability to cope with jet lag and finding suitable programs to ensure the hockey players are able to perform to the best of their ability in the shortest recovery time. Jet Lag program which mainly relates to diet, sleep patterns and passive exercise while are travelling, which are of benefit to the athlete. 11.1 Recommended Programme before Departure a) No caffeine – i.e coffee , tea b) No coke, also diet coke c) No chocolaté, Mars bars etc. d) Less Salt e) Reduce Alcohol drinks. 11.2 During Flight. a) As above – before depature. b) No carbonated drinks. c) Little cocentrated orange juice d) Less Calories – don’t eat everything that is put in front of you on the plane – avoid excessive peanuts etc. e) Drink lots of fluid – mineral water – Not carbonated. f) No Alcohol drinks. 11.3 Other Points to Remember on the Plane. a) Walk around every 1- 2 hours. b) Stretching exercice – Hamstrings, quads etc. c) Back flexibility exercise after sitting and sleeping for a long time. d) Ankle and foot mobility exercises. Explanation of all the intellectuals of the world do not equal the experience of one individual. 275
Similar documents
kebangsaan - Majlis Sukan Negara Malaysia
a new training facility specifically for AWD takes a lot of time and financial expenditure, inclusive training is something that we have to really consider in the future. PRACTICAL APPLICATION FOR ...
More informationContents
are of current interest and are making significant contributions to the ever increasing body of knowledge in sport and exercise sciences. The programme adopts a wide range of delivery formats, incl...
More information