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Lower limb joint kinetics in the starting blocks and first stance in athletic sprinting

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Author's post-print (627.8Kb)
Author
Brazil, Adam
Exell, Timothy
Wilson, Cassie
Willwacher, Steffen
Bezodis, Ian
Irwin, Gareth
Date
2016-08-17
Acceptance date
2016-09-06
Type
Journal
Publisher
Taylor & Francis
ISSN
0264-0414
1466-447X (ESSN)
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Abstract
The aim of this study was to examine lower limb joint kinetics during the block and first stance phases in athletic sprinting. Ten male sprinters (100 m PB, 10.50 ± 0.27 s) performed maximal sprint starts from blocks. External force (1000 Hz) and three-dimensional kinematics (250 Hz) were recorded in both the block (utilising instrumented starting blocks) and subsequent first stance phases. Ankle, knee and hip resultant joint moment, power and work were calculated at the rear and front leg during the block phase and during first stance using inverse dynamics. Significantly (P < 0.05) greater peak moment, power and work were evident at the knee joint in the front block and during stance compared with the rear block. Ankle joint kinetic data significantly increased during stance compared with the front and rear block. The hip joint dominated leg extensor energy generation in the block phase (rear leg, 61 ± 10%; front leg, 64 ± 8%) but significantly reduced during stance (32 ± 9%), where the ankle contributed most (42 ± 6%). The current study provides novel insight into sprint start biomechanics and the contribution of the lower limb joints towards leg extensor energy generation.
Journal/conference proceeding
Journal of Sports Sciences;
Citation
Brazil, A., Exell, T., Wilson, C., Willwacher, S., Bezodis, I. and Irwin, G. (2016) 'Lower limb joint kinetics in the starting blocks and first stance in athletic sprinting. Journal of Sports Sciences, 35(16) pp.1629-1635
URI
http://hdl.handle.net/10369/8463
DOI
http://dx.doi.org/10.1080/02640414.2016.1227465
Description
This article was published in Journal of Sports Sciences on 06 September 2016 available at http://dx.doi.org/10.1080/02640414.2016.1227465
Rights
http://www.rioxx.net/licenses/under-embargo-all-rights-reserved
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  • Sport Research Groups [1083]

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