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Workload and injury incidence in elite football academy players.

Authors
  • Delecroix, Barthélémy1
  • Delaval, Benoit2
  • Dawson, Brian3
  • Berthoin, Serge1
  • Dupont, Gregory4
  • 1 Univ. Lille, Univ. Artois, Univ. Littoral Côte d'Opale, EA 7369 - URePSSS - Unité de Recherche Pluridisciplinaire Sport Santé Société , F-59000 Lille , France. , (France)
  • 2 Adaptations physiologiques à l'exercice et réadaptation à l'effort, Université de Picardie Jules Verne , Amiens , France. , (France)
  • 3 School of Human Sciences (Sport Science, Exercise and Health), The University of Western Australia , Perth , Australia. , (Australia)
  • 4 The Football Exchange, Research Institute for Sport and Exercise Sciences, Liverpool John Moores University , Liverpool , UK.
Type
Published Article
Journal
Journal of Sports Sciences
Publisher
Informa UK (Taylor & Francis)
Publication Date
Dec 01, 2019
Volume
37
Issue
24
Pages
2768–2773
Identifiers
DOI: 10.1080/02640414.2019.1584954
PMID: 30821604
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

The aim of this study was to prospectively analyse the relationship between workloads and injury in elite football academy players. Elite football academy players (n = 122) from under-19 (U19) and under-21 (U21) of a professional football team competing in UEFA European Cups were followed during 5 seasons. Injuries were collected and absolute workload and workload ratios (4-weeks, 3-weeks, 2-weeks and week-to-week) calculated using a rolling days method with the help of the session Rate of Perceived Exertion. There was no association between absolute workload or workload ratio with the injury incidence in the U19. In the U21, the level of cumulative absolute workloads during 3-weeks (RR = 1.39, p = 0.026) and during 4-weeks (RR = 1.40, p = 0.019) were associated with an increase in injury. There was no association between workload ratio and injury in U21. The significant link between high cumulated 3-weeks and 4 weeks workloads and injury in U21 confirmed the requirement to monitor the internal subjective workload in U21 in order to prevent injury. Further studies exploring the relationships between workload and injury are required in football academy.

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