why? - inside.fei.org 2_ppt-fei footing project... · agneta egenvall elin hernlund cecilia...
TRANSCRIPT
![Page 1: WHY? - Inside.FEI.org 2_PPT-FEI footing project... · Agneta Egenvall Elin Hernlund Cecilia Lönnell UK, AHT: Rachel Murray Vicki Walker Carolyne Tranquille UK, Myerscough: Sarah](https://reader034.vdocument.in/reader034/viewer/2022052105/604063c6a2aaee7a4f0d7cca/html5/thumbnails/1.jpg)
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WHY?
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Forces between hoof and ground determine performance as well as risk of orthopaedic injury
We know that every force generated by the horse has a counter force which is the ground
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We know the mechanics and forces of horse locomotion
We know details about the vertical and horizontal forces when the hoof touches the ground
We have indentified five factors (functional properties) that characterise surfaces
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Hoof ground interaction biomechanics
• Three important and different events
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Impact
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Loading
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Propulsion/push off
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The mechanical
hoof
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Properties and features of the Orono mechanical hoof
• Both Vertical and horizontal • Load cells and accelerometers
• Horse hoof landing speed • Horse load,15 kN • Horse load rate
• Important due to viscoelastic properties
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Summary BASIC STUDY
• We have developed and applied a standardised testing method
• We have measured over 400 competition and training surfaces
• As a result we know • Details of surface properties • The basics of how construction affects the body of the
horse • That maintenance is of equal importance as
construction • The basics of how maintenance interact with
construction
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Sweden: Lars Roepstorff Agneta Egenvall Elin Hernlund Cecilia Lönnell
UK, AHT: Rachel Murray Vicki Walker Carolyne Tranquille
UK, Myerscough: Sarah Jane Hobbs Alison Northrop Jaime Martin
US: Mick Petersson Christie Mahaffey
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EQUESTRIAN SURFACES – A GUIDE
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THE FIVE FUNCTIONAL PROPERTIES
• Is necessary to characterize how the footing affects the horse
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Surface firmness
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Surface firmness
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Cushioning
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Cushioning
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Responsivness
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Responsivness
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Grip
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Grip
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Uniformity
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FEI footing study RIDER EVALUATION
• We have compiled data from 10 different 4 and 5* events during autumn 2013
• We have asked >300 top riders to evaluate competition and warm-up arenas. 54% response >600 arena evaluations
• The riders graded the same properties that were objectively measured
• As a result we have concluded that the subjective judgment of riders matches the objective measurements
• We can now recommend a range of measurements satisfying rider expectations for competition surfaces
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Event L
Event Y
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Maximal vertical acceleration / Surface firmness
B
D
G
L
Y
O
P
S
V
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0
0.5
1
1.5
2
2.5
3
3.5
4
0 5 10 15 20 25 30
0 to
5 s
cale
eva
laua
tion
Arena number
Firmness
Subjective evaluation
Mechanical hoof
Linear(Subjective evaluation)
Linear(Mechanical hoof)
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0
0.5
1
1.5
2
2.5
3
3.5
4
0 5 10 15 20 25 30
0 to
5 s
cale
eva
laua
tion
Arena number
Cushioning
Subjective evaluation
Mechanical hoof
Linear(Subjective evaluation)
Linear(Mechanical hoof)
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0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
0 5 10 15 20 25
0 to
5 s
cale
eva
laua
tion
Arena number
Responsivness
Subjective evaluation
Mechanical hoof
Linear(Subjective evaluation)
Linear(Mechanical hoof)
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0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
0 5 10 15 20 25
0 to
5 s
cale
eva
laua
tion
Arena number
Grip
Subjective evaluation
Mechanical hoof
Linear(Subjective evaluation)
Linear(Mechanical hoof)
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0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
0 5 10 15 20 25 30
0 to
5 s
cale
eva
laua
tion
Arena number
Uniformity
Subjective evaluation
Mechanical hoof
Linear(Subjective evaluation)
Linear(Mechanical hoof)
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0
1
2
3
4
5
6 12 10 4 22 11 5 2 3 21 30 9 29 24 16 23 28 26 17 1 20 15 19 7 8 14 18 13 25 27
Over all evaluation LSM +/- 2SE
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The way forward
• The tool exists • Recommendation on thresholds can be given • Evolution
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The perfect footing??