Analysis of lower limb internal kinetics and electromyography in elite race walking

Hanley, Brian and Bissas, Athanassios ORCID: 0000-0002-7858-9623 (2013) Analysis of lower limb internal kinetics and electromyography in elite race walking. Journal of Sports Sciences, 31 (11). pp. 1222-1232. doi:10.1080/02640414.2013.777763

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Abstract

The aim of this study was to analyse lower limb joint moments, powers and electromyography patterns in elite race walking. Twenty international male and female race walkers performed at their competitive pace in a laboratory setting. The collection of ground reaction forces (1000 Hz) was synchronised with two-dimensional high-speed videography (100 Hz) and electromyography of seven lower limb muscles (1000 Hz). As well as measuring key performance variables such as speed and stride length, normalised joint moments and powers were calculated. The rule in race walking which requires the knee to be extended from initial contact to midstance effectively made the knee redundant during stance with regard to energy generation. Instead, the leg functioned as a rigid lever which affected the role of the hip and ankle joints. The main contributors to energy generation were the hip extensors during late swing and early stance, and the ankle plantarflexors during late stance. The restricted functioning of the knee during stance meant that the importance of the swing leg in contributing to forward momentum was increased. The knee flexors underwent a phase of great energy absorption during the swing phase and this could increase the risk of injury to the hamstring muscles.

Item Type: Article
Article Type: Article
Uncontrolled Keywords: Elite athletes; Gait; Inverse dynamics; Joint kinetics; Track and field
Subjects: G Geography. Anthropology. Recreation > GV Recreation Leisure > GV557 Sports > GV0711 Coaching
G Geography. Anthropology. Recreation > GV Recreation Leisure > GV557 Sports > GV1060 Track and field athletics
Q Science > QP Physiology > QP301.H75 Physiology. Sport
Divisions: Schools and Research Institutes > School of Sport and Exercise > Applied Sport & Exercise Sciences
Research Priority Areas: Sport, Exercise, Health & Wellbeing
Depositing User: Nassos Bissas
Date Deposited: 17 Jun 2020 11:17
Last Modified: 17 Jun 2020 11:30
URI: http://eprints.glos.ac.uk/id/eprint/8396

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