adidas Football Research Innovations

Transcription

adidas Football
Research Innovations
Surface Workshop
Sheffield, April 3. 2007
Topics
¾ Football Innovation in between performance
and injury prevention
¾ FIFA quality concept for artificial turf/ UEFA
Football Turf Commission
¾ adidas approach to analyze traction
characteristics
¾ Conclusion
H. Koerger, Sheffield 2007
FOOTBALL
INNOVATION
IN BETWEEN
PERFORMANCE
AND
INJURY PREVENTION
adidas innovation team
What
does
Product Based Innovation Group
• Working in specific areas of
innovation
-
Footwear
- Apparel
- Hardware
- Balls
Supports Brand with Technology &
Innovation
• Create Stories / Brand Platforms
Multi Discipline Innovation
Group
Innovation Mangement
Industrial Design
Engineering (mechanical / electronic)
Development
Bio Mechanics
Advanced Marketing Communications
Goal: Create Innovation Concepts
adidas Partner for Football R&D
Uni Freiburg
HPL Uni Calgary
Uni Loughborough STRG
Uni Sheffield SERG
Uni Siegen
Deutsche Sporthochschule Köln
Product Innovation in Football
Performance
SurfaceFoot - Shoe - System
Injury Prevention
Comfort
Injury Statistics
High injury rates (13-35 injuries
per 1000 h) (Giza, 2003)
64%-88% lower extremities
(Ekstrand, 1983)
17%-21% Ankle and 20 % Knee
(ACL: 64% Stop to continue
sport) (Orchard, 2001)
Reasons for Football Injuries?
•
Risk: Time in Season
•
Risk: Fatigue
•
Risk: Pre-Injuries
•
Risk: Missing muscular control
•
Risk: Football boot / ground conditions
•
Others…….
Risk: Football boot /
Ground conditions
Fóotball Simulation
Robot Traction Test
Cadaver tests – Studs to minimize direct injuries
HPL Uni Calgary
FIFA Quality Concept for Artificial Turf
Slip resistance
¾ horizontal movement related to players perception
¾ the deceleration of the foot during stops
Traction
¾ needed for change of direction
¾ measures torque necessary to
start the motion of a studded
sole
adidas Football - Artificial Turf
adidas Traction Tester
Applied Normal
Load (700 N)
Load cell providing
force measurement
Laptop to record
force-time output
Test Boot
Actuator
Starting (Translational
Movement)
Representative of a player pushing
off for a sprint
Performance +++
Injury Prevention +
Turning (Rotational Movement)
Injury Prevention +++
Performance +
(excessive rotational traction is
correlated with injuries)
Pivot point of the traction tester
Representative of a player
performing a quick turn
adidas benchmark
Goal: Quantify traction values of adidas football shoes
on FIFA recommended artificial turfs
Objectives
traction benchmark of 4 well-established and
successful shoe-natural grass combinations
Compare natural grass combinations to 6 shoe
types on 4 artificial turf samples under dry
and wet conditions
Benchmark Traction Natural Turf
Mania FG
Copa Mundial
Pulse X-TRX SG
World Cup
benchmark traction natural turf
Force-Time Traces
Translation
Rotation
2,0
80
70
1,6
60
1,2
Copa
ManiaTRX
1,0
WorldCup
PulseXTRX
0,8
0,6
Torque (Nm)
1,4
COT
(COT used for simplicity)
1,8
50
Copa
Mania TRX
40
World Cup
Pulse XTRX
30
20
0,4
10
0,2
0
0,0
0
0
1
2
3
4
Time (s)
1
2
3
Time (s)
4
benchmark traction natural turf
Translation
Rotation
Natural Turf SG and FG Benchmarks
1,73
1,71
1,56
1,41
1,5
75,4
80
1,0
0,5
Maximum Toruqe (Nm)
Maximum COT
2,0
Natural Turf SG and FG Benchmarks
63,1
55,6
60
60,0
40
20
0
0,0
World Cup (SG)
Copa Mundial Pulse XTRX (SG) Mania TRX (FG)
(FG)
Turf
World Cup (SG)
Copa Mundial Pulse XTRX (SG) Mania TRX (FG)
(FG)
Turf
Natural-turf based Acceptance Zone defined using
standard deviation of maximum and minimum values of
COT & Torque for well-established shoes
COT v Torque for Accepted Configurations
2,5
2,5
Extreme
Translational
Traction
2,0
2,0
XTRX on Natural-Wet
Wolrd Cup on
Natural-Wet
COT
COT
1,5
1,5
TRX on Natural-Dry
Insufficient
Translational
Traction
1,0
1,0
Copa on Natural-Dry
Accepted
Zone
0,5
0,5
Insufficient
Torque
Extreme
Torque
0,0
0,0
00
10
10
20
20
30
40
50
50
Torque (Nm)
(Nm)
Torque
60
60
70
80
90
benchmark traction artificial turf
Copa Mundial
Mundial Team
Predator Mania TRX
Predator Pulse XTRX
TRX Turf
F30 HG
Results:
COT
COT
v vTorque
Torque
for
for
Dry
Accepted
Polythan
Configurations
dry
sample 1Configurations
2,5
2,5
Pulse SG
Mania FG
2,0
2,0
Mundial
F30 HG
TRXturf
Copa
1,0
1,0
Accepted
Zone
COT
1,5
1,5
0,5
0,5
0,0
0,0
00
10
10
20
30
30
40
50
Torque (Nm)
60
70
80
90
Results:
COT
vv
Torque
forfor
Polythan
Wet
Configurations
COT
Torque
Accepted
wet
sample
1Configurations
2,5
Mania FG
2,0
Pulse SG
Mundial
F30 HG
1,5
COT
TRXturf
1,0
Copa
Accepted
Zone
0,5
0,0
0
10
20
30
40
50
Torque (Nm)
60
70
80
90
Results:
COTv vTorque
Torquefor
forAccepted
Dry
Configurations
COT
Configurations
dry XL
sample
2
2,5
2,0
Mundial
TRXturf
1,5
COT
Copa
Pulse SG
Mania FG
1,0
F30 HG
Accepted
Zone
0,5
0,0
0
10
20
30
40
50
Torque (Nm)
60
70
80
90
Results:
COT
COTvvTorque
Torquefor
forAccepted
XL
Wet
Configurations
Configurations
wet
sample
2
2,5
2,5
2,0
2,0
COT
1,5
1,5
Copa
Mania FG
1,0
1,0
TRXturf
Mundial
Accepted
F30 HG
Pulse SG Zone
0,5
0,5
0,0
0,0
00
10
10
20
30
30
40
50
Torque (Nm)
60
70
80
90
benchmark traction artificial turf
Comparing Torque-Time Traces:
Copa Rotation Traces on Dry Surfaces
natural turf - rotation
80
80
70
70
60
50
Torque (Nm)
Torque (Nm)
60
40
30
natural grass
Natural Dry (FG)
•Warning: we must
Copa
consider the complete
40
Mania TRX
trace!!!
50
World Cup
30
Pulse XTRX
Sample1
Field
Turf Dry
20
20
Sample2
Polytan
Dry
Sample3
Tarkett
Sommer Dry
10
10
XLsample4
Dry
0
0
1
2
3
Time (s)
4
0
0
1
2
3
Time (s)
4
benchmark traction
Conclusions:
¾ Traction outsoles deliver lower torques compared to
traditional outsoles
¾ Important parameters
¾ Peak Forces
¾ Force Time Curves
¾ A shoe recommendation is only reasonable for a
certain combination of surface and surface
condition (moisture, maintenance, wear, aging, …)!
Study with Football Players:
stud configurations and knee injuries
University of
Freiburg
Benchmark of different stud
configurations (traditional Studs
versus TraXion studs).
Measure the influence on specific
loads of the human skeleton
(especially the knee).
m. vastus
medialis
m. biceps
fem.
m. gastrocnemius
m.
tibialis
anterior
m.
peroneaus
Electromyography
Ankle Dors/Plan Moment
Dors
Add
Moment (Newtonmetre per kilo)
2.00
0.50
1.00
0.00
-0.50
0
10
20
30
40
50
60
70
80
90
100
Abd
0.00
Plan
Ankle Ab/Add Moment
1.00
3.00
0
10
20
Normalised (percent)
30
40
50
60
70
80
90
100
Ankle Rotation Moment
Int
0.50
0.40
0.30
0.20
0.10
0.00
-0.10
-0.20
-0.30
H. Koerger,
Sheffield
2007
Change
of
Change
of directions
directions
Ext
-0.40
0
10
20
30
40
50
60
70
80
90
100
Knee Valg/Var Moment
Knee Flex/Ext Moment
Var
Flex
3.0
2.0
1.00
1.0
0.0
0.00
-1.0
0
10
20
30
40
50
60
70
80
90
100
Valg
Ext
-2.0
0
10
20
30
40
50
60
70
80
90
100
70
80
90
100
Knee Rotation Moment
Int
0.50
0.40
0.30
0.20
0.10
0.00
-0.10
-0.20
-0.30
Ext
-0.40
Change
of
Change
of direction
direction
H. Koerger,
Sheffield
2007
0
10
20
30
40
50
60
Final Conclusions
•
TRAXION Studs do have positive
influence on Performance and NO
negative influence on knee injuries!
•
We are able to measure and evaluate
traction behavior of all shoe
surface/ground conditions.
•
We want to offer the possibility to
choose the optimal Football boot
solution for all players!
Thank you!

adidas Football Research Innovations

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