The effect of fatigue on first stance phase kinetics during acceleration sprint running in professional football players

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Abstract

ABSRACT The study examined the effect of a fatiguing protocol on first stance phase kinetics during acceleration sprint running in professional football players. Nineteen participants (Age: 26±5 years; Height: 1.84±0.08 m; Mass: 83.4±8.9 kg) completed three x 30 m maximal acceleration sprints from a standing start before completing the Yo-Yo intermittent recovery test level 1. Three x 30 m maximal acceleration sprints were then repeated post-fatigue. Light gates recorded sprint times from 0-5 m, 0-10 m, 0-15 m and 0-30 m. Force platforms collected ground reaction force of the first stance phase of the sprint run. Differences between pre- and post-fatigue were observed in the sprint times over 0-15 m (P = 0.015; CI [0.007, 0.110]) and 0-30 m (P = 0.004; CI [0.056, 0.234]). Peak medial-lateral ground reaction force was lower (P = 0.045; CI [-0.146, -0.005]) post- than pre-fatigue. The ratio of force were significantly different between pre- and post-fatigue for the medial-lateral and anterior-posterior comparison (P = 0.017; CI [-0.063, -0.010]), and the medial-lateral and vertical comparison (P = 0.012; CI [-0.036, -0.007]). Football players altered their sprint mechanics to reduce medial-lateral loading and orient the force in an increased anteroposterior and vertical direction in order to maintain 0-10 m sprint performance. Practitioners should observe medial-lateral force contributions and improve sprint technical efficacy.

Original languageEnglish
Pages (from-to)90-96
Number of pages7
JournalScience and Medicine in Football
Volume5
Issue number2
Early online date30 Jul 2020
DOIs
Publication statusPublished - 2021

Bibliographical note

This is an Accepted Manuscript of an article published by Taylor & Francis in Science and Medicine in Football on 30/07/2020, available online: http://www.tandfonline.com/10.1080/24733938.2020.1799064

Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders.

Keywords

  • Biomechanics
  • Fatigue
  • Kinetics
  • Performance
  • Physiology

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation
  • Tourism, Leisure and Hospitality Management

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