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The effect of body position and mass centre velocity at toe off on the start performance of elite swimmers and how this differs between gender.pdf (743.65 kB)

The effect of body position and mass centre velocity at toe off on the start performance of elite swimmers and how this differs between gender

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posted on 2023-11-17, 15:04 authored by Imogen Shepherd, Martin Lindley, Oliver Logan, Aimee MearsAimee Mears, Matthew PainMatthew Pain, Mark KingMark King
The start in swimming is a crucial phase of a race, where improvements in performance can be made. Twenty-four elite swimmers race pace starts were recorded from five above and below water 50 Hz video cameras. Body position at toe off was calculated from the recordings and consisted of the two-dimensional mass centre position at toe off, and the arm, trunk, front leg and rear leg angles. Horizontal, vertical and resultant velocity of the mass centre at toe off, time to 5 m, 10 m and 15 m were also determined. Whilst time to 5 m (starting performance) differed by 0.17 s between genders, body position at toe off showed no significant differences. The difference in start performance was mainly due to a difference in horizontal velocity at toe off. The relationship between arm angle and start performance warrants further investigation as there was a range of techniques adopted but no clear link to performance. The trunk angle at toe off was correlated to starting performance for both males and females. This study demonstrates that the body position at toe off is no different between genders but is a critical determinant of starting performance for both males and females.

Funding

English Institute of Sport [grant number J16236]

British Swimming [grant number J16236]

History

School

  • Mechanical, Electrical and Manufacturing Engineering
  • Sport, Exercise and Health Sciences

Published in

Sports Biomechanics

Volume

22

Issue

12

Pages

1659-1668

Publisher

Informa UK Limited

Version

  • VoR (Version of Record)

Rights holder

© The authors

Publisher statement

This is an Open Access Article. It is published by Taylor and Francis under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

2021-04-14

Publication date

2021-05-19

Copyright date

2021

ISSN

1476-3141

eISSN

1752-6116

Language

  • en

Depositor

Prof Mark King. Deposit date: 20 May 2021

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