Golf Biomechanics Instructor Training Level 1

Dr. Kwon’s
Golf Biomechanics
Instructor Training
Level 1
Dr. Kwon’s Bio
Young-Hoo Kwon, Ph.D., FISBS
• Professor of Kinesiology
• Director of Biomechanics Laboratory
Texas Woman’s University, Denton, TX, USA
Employment
• Associate & Full Professor, Dept. of Kinesiology, Texas Woman’s
University, Denton, TX (2002-)
• Assistant & Associate Professor, School of Physical Education,
Ball State University, Muncie, IN (1997-2002)
• Senior Researcher, Biomechanics Dept., Korea Institute of Sport
Sciences, Seoul, Korea (1993-1997)
Professional Activities
• Life Member & Fellow, International Society of Biomechanics in Sports
• Editor in Chief, Sports Biomechanics (2007-2014)
• VP of Publications (2002-2007) & Director (2008-2014),
International Society of Biomechanics in Sports
• Developer, Kwon3D Motion Analysis Suite (1991-)
Dr. Kwon’s Bio
Golf Swing Motion Analysis
PGA/Champions Tour
Long Driver
Tommy Armour III
Aaron Baddeley
Mark Brooks
Brad Elder
J.J. Henry
Mark Hensby
Charles Howell III
Trevor Immelman
Lucas Lee
Richard Lee
Jamie Lovemark
Scott Stallings
Daniel Summerhays
Tyrone Van Aswegen
Grant Waite
Tim Wilkinson
YE Yang
Jamie Sadlowski
LPGA/KLPGA Tour
NaYeonChoi
Julieta Granada
Hye Youn Kim
So Young Kim 2
Sue Kim
Meena Lee
Mi Hyang Lee
Saehee Son
Jennifer Song
Marissa Steen
+ Numerous Web.com Tour, Symetra Tour, mini tour, collegiate,
and junior players
+ Numerous teaching professionals
Dr. Kwon’s Golf Biomechanics
Instructor Training Level 1
Objectives
•To introduce basic mechanical quantities/concepts relevant to golf
swing
•To introduce key biomechanical principles of human movement
•To provide a firm mechanical/biomechanical framework of the
“mechanically good golf swing”
Class 1: Introduction
Class 2: Basic mechanical concepts
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• Mass
- Center of mass (CM)
• Force
- Properties
- Various forces
- Pressure
• Moment of force
- Moment arm
- Moment vs. moment arm
• Types of force
• Mechanical system & external force
• Force-force vs. force-moment approach
• Newton’s laws of motion
- Inertia
- Acceleration
- Reaction
Orientation
Golf swing biomechanics
Main themes & expected outcomes
Kinematics vs. kinetics
Types of motion
- Linear
- Angular
- General
- Analysis strategies
• Scalar vs. vector
- Vector addition/subtraction
- The tip-to-tale method
- Vector components
• Swing events & phases
Class 3: Golfer’s body
Class 4: Linear kinematics
• Degrees of freedom (DOFs) in the
golfer’s body
• Joint flexibility and range of motion
• Types of muscle contraction
• Hill’s muscle model
• Force-length relationship
• Force-velocity relationship
• Force-time relationship
• Stretch-shortening cycle
• Countermovement
• Muscular strength, endurance, and
power
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Class 5: Functional swing plane
Class 6: Angular kinematics
• Popular swing planes
- Ben Hogan
- Hank Haney
- Jim Hardy
- Double-pendulum & triple-pendulum
• Functional swing plane (FSP)
- Clubhead trajectory plane
- Properties
- Position of FSP
- Moving reference frame
• Swing style classification based on FSP
• Popular models revisited
• Motion planes (MPs) of the joints
• Upper body- vs. lower body-dominant
swing
• Functional double-pendulum (FDP)
- On-plane motion
• Angular position
- X-factor & shoulder/hip line angles
- Upper and lever angles
- Motion range
• Angular velocities
• Kinematic sequence
• Angular accelerations
• Club motion: linear vs. angular
- Radian
- Displacement & velocity relationships
- Acceleration relationship
Degrees of freedom (DOFs)
Position & relative position
CM of the golfer’s body
Trajectory & displacement Velocity &
speed
• Acceleration
- Interpretation
- Tangential vs. normal acceleration
• Body CM motion
• Change of direction motion
Class 7: Linear & angular kinetics
Summary and Closing
• Ground reaction force
- Ground reaction force (GRF)
- Center of pressure (CP)
- Ground reaction moment (GRM)
• Foot-ground interaction
- GRF moments
- Pivoting & foot contact moments
• Analysis of the stepping drill
• Moment of inertia
- Radius of gyration
- Club
• Momentum
- 2nd law revisited
- 1 st law revisited – momentum
conservation
- Club
- Local & remote angular momentums
• Impulse
• Newton’s equation of motion
- Golfer + club
- Club
- Lower body – inverse dynamics
• Ground-up vs. core-down?
• Angular momentum generation vs.
transfer
• Mechanically natural/good swing?
• Q&A
COURSE SCHEDULE LEVEL 1
Day 1
8:30-9:00a 9:00-10:20a 10:30a-12:20p 12:30-1:30p 1:30-2:50p 3:00-4:20p 4:30-5:50p Day 2
Registration
Introduction
Basic mechanical concepts
Lunch
Golfer’s body
Linear kinematics
Functional swing plane
9:00-10:20a Angular kinematics
10:30a-12:20p Kinetics 1
12:30-1:30p Lunch
1:30-3:20p Kinetics 2
3:30-4:00p Summary and closing