adidas Football Research Innovations - Loughborough …sportsurf.lboro.ac.uk/workshops/4/HK.pdf ·...
Transcript of adidas Football Research Innovations - Loughborough …sportsurf.lboro.ac.uk/workshops/4/HK.pdf ·...
Surface Workshop Sheffield, April 3. 2007
adidas Football Research Innovations
H. Koerger, Sheffield 2007
TopicsFootball Innovation in between performance and injury preventionFIFA quality concept for artificial turf/ UEFA Football Turf Commissionadidas approach to analyze traction characteristicsConclusion
FOOTBALL INNOVATION
IN BETWEEN
PERFORMANCEAND
INJURY PREVENTION
H. Koerger, Sheffield 2007
adidas innovation team
H. Koerger, Sheffield 2007
Product Based Innovation Group• Working in specific areas of
innovation- Footwear- Apparel- Hardware- Balls
Supports Brand with Technology & Innovation
• Create Stories / Brand Platforms
What does
H. Koerger, Sheffield 2007
Multi Discipline Innovation Group
Innovation MangementIndustrial DesignEngineering (mechanical / electronic)DevelopmentBio MechanicsAdvanced Marketing Communications
Goal: Create Innovation Concepts
H. Koerger, Sheffield 2007
adidas Partner for Football R&D
Uni FreiburgHPL Uni CalgaryUni Loughborough STRGUni Sheffield SERGUni SiegenDeutsche Sporthochschule Köln
H. Koerger, Sheffield 2007
Product Innovation in Football
Comfort
Performance
Injury Prevention
Foot - Shoe - SystemSurface-
H. Koerger, Sheffield 2007
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)
H. Koerger, Sheffield 2007
Reasons for Football Injuries?
• Risk: Time in Season• Risk: Fatigue• Risk: Pre-Injuries• Risk: Missing muscular control• Risk: Football boot / ground conditions• Others…….
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Risk: Football boot /Ground conditions
Robot Traction TestCadaver tests – Studs to minimize direct injuries
HPL Uni Calgary
Fóotball Simulation
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FIFA Quality Concept for Artificial Turf
Slip resistance
horizontal movement related to players perception
the deceleration of the foot during stops
H. Koerger, Sheffield 2007
FIFA Quality Concept for Artificial Turf
Traction
needed for change of direction
measures torque necessary to start the motion of a studded sole
H. Koerger, Sheffield 2007
FIFA Quality Concept for Artificial Turf
H. Koerger, Sheffield 2007
FIFA Quality Concept for Artificial Turf
H. Koerger, Sheffield 2007
adidas Traction Tester
Test Boot
Applied Normal Load (700 N)
Load cell providingforce measurement
Actuator
Laptop to recordforce-time output
adidas Football - Artificial Turf
H. Koerger, Sheffield 2007
Starting (Translational Movement)
Representative of a player pushing
off for a sprint
Performance +++
Injury Prevention +
adidas Traction Tester
H. Koerger, Sheffield 2007
Pivotpoint of the
tractiontester
adidas Traction TesterTurning (Rotational Movement)
Representative of a player performing a quick turn
Injury Prevention +++
Performance +
(excessive rotational traction is correlated with injuries)
H. Koerger, Sheffield 2007
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
adidas benchmark
H. Koerger, Sheffield 2007
Mania FG Copa Mundial Pulse X-TRX SG World Cup
Benchmark Traction Natural Turf
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Force-Time Traces
Translation
0,0
0,2
0,4
0,6
0,8
1,0
1,2
1,4
1,6
1,8
2,0
0 1 2 3 4
Time (s)
COT
Copa
Mania TRX
World Cup
Pulse XTRX
(CO
T us
edfo
rsim
plic
ity)
Rotation
0
10
20
30
40
50
60
70
80
0 1 2 3 4
Time (s)
Torq
ue (N
m)
Copa
Mania TRX
World Cup
Pulse XTRX
benchmark traction natural turf
H. Koerger, Sheffield 2007
Natural-turf based Acceptance Zone defined using standard deviation of maximum and minimum values of
COT & Torque for well-established shoes
benchmark traction natural turf
Natural Turf SG and FG Benchmarks
1,73
1,41
1,711,56
0,0
0,5
1,0
1,5
2,0
World Cup (SG) Copa Mundial(FG)
Pulse XTRX (SG) Mania TRX (FG)
Turf
Max
imum
CO
T
Natural Turf SG and FG Benchmarks
63,1
75,4
55,660,0
0
20
40
60
80
World Cup (SG) Copa Mundial(FG)
Pulse XTRX (SG) Mania TRX (FG)
Turf
Max
imum
Tor
uqe
(Nm
)
Translation Rotation
H. Koerger, Sheffield 2007
COT v Torque for Accepted Configurations
0,0
0,5
1,0
1,5
2,0
2,5
0 10 20 30 40 50 60 70 80 90
Torque (Nm)
CO
TCOT v Torque for Accepted Configurations
Copa on Natural-DryTRX on Natural-Dry
XTRX on Natural-Wet Wolrd Cup on Natural-Wet
0,0
0,5
1,0
1,5
2,0
2,5
0 10 20 30 40 50 60 70 80 90
Torque (Nm)
CO
T
Extreme Torque
InsufficientTorque
InsufficientTranslationalTraction
Extreme TranslationalTraction
COT v Torque for Accepted Configurations
0,0
0,5
1,0
1,5
2,0
2,5
0 10 20 30 40 50 60 70 80 90
Torque (Nm)
CO
T
AcceptedZone
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Copa Mundial Mundial Team
Predator Mania TRX Predator Pulse XTRX
TRX Turf F30 HG
benchmark traction artificial turf
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COT v Torque for Accepted Configurations
0,0
0,5
1,0
1,5
2,0
2,5
0 10 20 30 40 50 60 70 80 90
Torque (Nm)
CO
T
AcceptedZone
COT v Torque for Dry Polythan Configurations
Copa
Mundial
Mania FGPulse SG
TRXturf F30 HG
0,0
0,5
1,0
1,5
2,0
2,5
0 10 20 30 40 50 60 70 80 90
Torque (Nm)
CO
T
Results:dry sample 1
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COT v Torque for Accepted Configurations
0,0
0,5
1,0
1,5
2,0
2,5
0 10 20 30 40 50 60 70 80 90
Torque (Nm)
CO
T
AcceptedZone
COT v Torque for Polythan Wet Configurations
Copa
Mundial
Mania FGPulse SG
TRXturf
F30 HG
0,0
0,5
1,0
1,5
2,0
2,5
0 10 20 30 40 50 60 70 80 90
Torque (Nm)
CO
T
Results:wet sample 1
H. Koerger, Sheffield 2007
COT v Torque for Accepted Configurations
0,0
0,5
1,0
1,5
2,0
2,5
0 10 20 30 40 50 60 70 80 90
Torque (Nm)
CO
T
AcceptedZone
COT v Torque for Dry XL Configurations
Copa
Mundial
Mania FGPulse SG
TRXturf
F30 HG
0,0
0,5
1,0
1,5
2,0
2,5
0 10 20 30 40 50 60 70 80 90
Torque (Nm)
CO
T
Results: dry sample 2
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COT v Torque for Accepted Configurations
0,0
0,5
1,0
1,5
2,0
2,5
0 10 20 30 40 50 60 70 80 90
Torque (Nm)
CO
T
AcceptedZone
COT v Torque for XL Wet Configurations
CopaMundial
Mania FG
Pulse SG
TRXturf
F30 HG
0,0
0,5
1,0
1,5
2,0
2,5
0 10 20 30 40 50 60 70 80 90
Torque (Nm)
CO
T
Results: wet sample 2
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Copa Rotation Traces on Dry Surfaces
0
10
20
30
40
50
60
70
80
0 1 2 3 4
Time (s)
Torq
ue (N
m)
Natural Dry (FG)
Field Turf Dry
Polytan Dry
Tarkett Sommer Dry
XL Dry
natural grass
Sample1
Sample2
Sample3
sample4
Comparing Torque-Time Traces:
•Warning: we mustconsider the completetrace!!!
natural turf - rotation
0
10
20
30
40
50
60
70
80
0 1 2 3 4
Time (s)
Torq
ue (N
m)
Copa
Mania TRX
World Cup
Pulse XTRX
benchmark traction artificial turf
H. Koerger, Sheffield 2007
Conclusions:Traction outsoles deliver lower torques compared to traditional outsoles
Important parameters
Peak ForcesForce Time Curves
A shoe recommendation is only reasonable for a certain combination of surface and surface condition (moisture, maintenance, wear, aging, …)!
benchmark traction
H. Koerger, Sheffield 2007
University of Freiburg
Study with Football Players: stud configurations and knee injuries
Benchmark of different stud configurations (traditional Studs versus TraXion studs).
Measure the influence on specific loads of the human skeleton (especially the knee).
H. Koerger, Sheffield 2007Electromyography
m. vastus
medialis
m.
peroneaus
m. tibialis
anterior
m. gastrocnemius
m. bicepsfem.
H. Koerger, Sheffield 2007
0 10 20 30 40 50 60 70 80 90 100
0.00
1.00
2.00
3.00
Normalised (percent)
Mom
ent (
New
tonm
etre
per
kilo
)D
ors
Pla
nAnkle Dors/Plan Moment
0 10 20 30 40 50 60 70 80 90 100
-0.50
0.00
0.50
1.00
Normalised (percent)
Mom
ent (
New
tonm
etre
per
kilo
)A
ddA
bd
Ankle Ab/Add Moment
0 10 20 30 40 50 60 70 80 90 100
-0.40
-0.30
-0.20
-0.10
0.00
0.10
0.20
0.30
0.40
0.50
Normalised (percent)
Mom
ent (
New
tonm
etre
per
kilo
)In
tE
xt
Ankle Rotation Moment
Change of directionsChange of directions
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0 10 20 30 40 50 60 70 80 90 100
-2.0
-1.0
0.0
1.0
2.0
3.0
Normalised (percent)
Mom
ent (
New
tonm
etre
per
kilo
)Fl
exE
xtKnee Flex/Ext Moment
0 10 20 30 40 50 60 70 80 90 100
0.00
1.00
Normalised (percent)
Mom
ent (
New
tonm
etre
per
kilo
)V
arV
alg
Knee Valg/Var Moment
0 10 20 30 40 50 60 70 80 90 100
-0.40
-0.30
-0.20
-0.10
0.00
0.10
0.20
0.30
0.40
0.50
Normalised (percent)
Mom
ent (
New
tonm
etre
per
kilo
)In
tE
xt
Knee Rotation Moment
Change of directionChange of direction
H. Koerger, Sheffield 2007
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!
H. Koerger, Sheffield 2007
Thank you!