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Ankle moment generation and maximum-effort curved sprinting performance.
1Human Performance Laboratory, University of Calgary, Canada. gluo@kin.ucalgary.ca
Optimizing ankle joint mechanics with wedged footwear significantly improved curved sprinting speed by enhancing ground reaction force. This suggests ankle moment generation is a key factor in athletic performance during high-speed turns.
Area of Science:
- Biomechanics
- Sports Science
- Athletic Performance
Background:
- High-speed turning in sports relies on ground reaction forces.
- Ankle joint moments are critical for generating these forces.
- Extreme ankle inversion/eversion during curved sprints can limit performance.
Purpose of the Study:
- To investigate how ankle moment generation influences curved sprinting speed.
- To determine if modified footwear can enhance ankle joint mechanics and performance.
Main Methods:
- 17 male athletes performed maximal curved sprints with and without specialized wedged footwear.
- Measurements included ankle joint angles, moments, ground reaction forces, and sprinting speed.
- Wedged footwear aimed to neutralize frontal-plane ankle positions.
Main Results:
- Wedged footwear reduced ankle eversion and increased plantarflexion moment.
- Centripetal ground reaction force and impulse increased significantly with wedged footwear.
- Curved sprinting speed improved by 4.3% with the wedged footwear.
Conclusions:
- Ankle moment generation is a critical performance constraint in curved sprinting.
- Modifying footwear to optimize ankle mechanics can enhance athletic performance.
- Targeting ankle joint function offers a novel approach to improving turning speed.
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