The effect of the bend on technique and performance during maximal effort sprinting

CHURCHILL, Sarah M., SALO, Aki I.T. and TREWARTHA, Grant (2015). The effect of the bend on technique and performance during maximal effort sprinting. Sports Biomechanics, 14 (1), 106-121.

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Abstract

This study investigated changes in performance and technique that occur during maximal effort bend sprinting compared to straight-line sprinting under typical outdoor track conditions. Utilising a repeated measures design, three-dimensional video analysis was conducted on seven male sprinters in both conditions (bend radius: 37.72 m). Mean race velocity decreased from 9.86 m/s to 9.39 m/s for the left step (p = 0.008) and from 9.80 m/s to 9.33 m/s for the right step (p = 0.004) on the bend compared to the straight, a 4.7% decrease for both steps. This was due mainly to a 0.11 Hz (p = 0.022) decrease in step frequency for the left step and a 0.10 m (p = 0.005) reduction in race step length for the right step. The left hip was 4.0° (p = 0.049) more adducted at touchdown on the bend than the straight. Furthermore, the bend elicited significant differences between left and right steps in a number of variables including ground contact time, touchdown distance and hip flexion/extension and abduction/adduction angles. The results indicate that the roles of the left and right steps may be functionally different during bend sprinting. This specificity should be considered when designing training programmes.

Item Type:	Article
Additional Information:	Published online: 21 Apr 2015.
Research Institute, Centre or Group - Does NOT include content added after October 2018:	Centre for Sports Engineering Research
Identification Number:	https://doi.org/10.1080/14763141.2015.1024717
Page Range:	106-121
Depositing User:	Sarah Churchill
Date Deposited:	01 Jun 2015 15:27
Last Modified:	18 Mar 2021 04:34
URI:	https://shura.shu.ac.uk/id/eprint/10043

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