Kinematic modifications of the lower limb during the acceleration phase of bend sprinting.

JUDSON, Laura, CHURCHILL, Sarah, BARNES, Andrew, STONE, Joseph, BROOKES, Ian and WHEAT, Jonathan (2019). Kinematic modifications of the lower limb during the acceleration phase of bend sprinting. Journal of Sports Sciences.

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A decrease in speed when sprinting on the bend compared with the straight has been attributed to kinetic, kinematic and spatiotemporal modifications. Although maximal speed is dependent on an athlete's ability to accelerate, there is limited research investigating the acceleration phase of bend sprinting. This study used a lower limb and trunk marker set with 15 optoelectronic cameras to examine kinematic and spatiotemporal variables of the lower limb during sprinting on the bend and straight. Nine sprinters completed up to six 30 m maximal effort trials in bend (radius 36.5 m, lane one) and straight conditions. An increase in body lateral lean at touchdown resulted in a number of asymmetric kinematic modifications. Whilst the left limb demonstrated a greater peak hip adduction, peak hip internal rotation and peak ankle eversion on the bend compared with the straight, the right limb was characterised by an increase in peak hip abduction. These results demonstrate that kinematic modifications start early in the race and likely accumulate, resulting in greater modifications at maximal speed. It is recommended that strength and conditioning programmes target the hip, ankle and foot in the non-sagittal planes. In addition, sprint training should prioritise specificity by occurring on the bend.

Item Type: Article
Uncontrolled Keywords: Athletics; adduction; curve; motion capture; Sport Sciences; 1106 Human Movement and Sports Sciences; 1302 Curriculum and Pedagogy
Identification Number:
SWORD Depositor: Symplectic Elements
Depositing User: Symplectic Elements
Date Deposited: 18 Dec 2019 10:26
Last Modified: 17 Mar 2021 19:31

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