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Characterising initial sprint acceleration strategies using a whole-body kinematics approach

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journal contribution
posted on 07.12.2021, 17:53 by James J. Wild, Ian N. Bezodis, Jamie S North, Neil E Bezodis
Sprint acceleration is an important motor skill in team sports, thus consideration of techniques adopted during the initial steps of acceleration is of interest. Different technique strategies can be adopted due to multiple interacting components, but the reasons for, and performance implications of, these differences are unclear. 29 professional rugby union backs completed three maximal 30 m sprints, from which spatiotemporal variables and linear and angular kinematics during the first four steps were obtained. Leg strength qualities were also obtained from a series of strength tests for 25 participants, and 13 participants completed the sprint protocol on four separate occasions to assess the reliability of the observed technique strategies. Using hierarchical agglomerative cluster analysis, four clear participant groups were identified according to their normalised spatiotemporal variables. Whilst significant differences in several lower limb sprint kinematic and strength qualities existed between groups, there were no significant between-group differences in acceleration performance, suggesting inter-athlete technique degeneracy in the context of performance. As the intra-individual whole-body kinematic strategies were stable (mean CV = 1.9% to 6.7%), the novel approach developed and applied in this study provides an effective solution for monitoring changes in acceleration technique strategies in response to technical or physical interventions.

History

Published in

Journal of Sports Sciences

Publisher

Taylor & Francis

Acceptance Date

22/09/2021

Publication Date

06/10/2021

Version

VoR (Version of Record)

Citation

Wild, J. J., Bezodis, I. N., North, J. S., & Bezodis, N. E. (2021) 'Characterising initial sprint acceleration strategies using a whole-body kinematics approach', Journal of Sports Sciences, 1-12. DOI: 10.1080/02640414.2021.1985759

Print ISSN

0264-0414

Electronic ISSN

1466-447X

Cardiff Met Affiliation

  • Cardiff School of Sport and Health Sciences

Cardiff Met Authors

Ian Bezodis

Cardiff Met Research Centre/Group

  • High Performance

Copyright Holder

© The Authors

Language

en