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No association between perceived exertion and session duration with hamstring injury occurrence in professional football

Lolli, L, Bahr, R, Weston, M, Whiteley, R, Tabben, M, Bonanno, D, Gregson, W, Chamari, K, Di Salvo, V and van Dyk, N (2019) No association between perceived exertion and session duration with hamstring injury occurrence in professional football. Scandinavian Journal of Medicine & Science in Sports, 30 (3). pp. 523-530. ISSN 0905-7188

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Abstract

Training and competition loads have emerged as modifiable composite risk factors of non‐contact injury. Hamstring strains are the most common injuries in football with substantial burden on the individual player and club. Nevertheless, robust evidence of a consistent load‐hamstring injury relationship in professional football is lacking. Using available data from the Qatar Stars League over three competitive seasons, this study investigated the separate and combined effects of perceived exertion and session duration on hamstring injury occurrence in a sample of 30 outfield football players. Load variables were calculated into 7‐day, 14‐day, 21‐day, 28‐day periods of data, and week‐to‐week changes for average ratings of perceived exertion (RPE; au) score and session‐RPE (s‐RPE; session‐duration urn:x-wiley:09057188:media:sms13591:sms13591-math-0001 score), plus the cumulative training and match minutes and s‐RPE, respectively. Conditional logistic regression models estimated load‐injury relationships per 2‐within‐subject standard deviation increments in each candidate variable. Associations were declared practically important based on the location of the confidence interval in relation to thresholds of 0.90 and 1.11 defining small beneficial and harmful effects, respectively. The uncertainty for the corrected odds ratios show that typically high within‐subject increments in each candidate variable were not practically important for training‐ and match‐related hamstring injury (95% confidence intervals range: 0.85 to 1.16). We found limited exploratory evidence regarding the value of perceived exertion and session duration as etiological factors of hamstring injury in Middle‐East professional football. Monitoring remains valuable to inform player load management strategies, but our exploratory findings suggest its role for type‐specific injury risk determination appears empirically unsupported.

Item Type: Article
Additional Information: This is the peer reviewed version of the following article: Lolli, L, Bahr, R, Weston, M, et al. No association between perceived exertion and session duration with hamstring injury occurrence in professional football. Scand J Med Sci Sports. 2020; 30: 523– 530. https://doi.org/10.1111/sms.13591 which has been published in final form at http://dx.doi.org/10.1111/sms.13591. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Uncontrolled Keywords: 1106 Human Movement and Sports Sciences
Subjects: R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions: Sports & Exercise Sciences
Publisher: Wiley
Related URLs:
Date Deposited: 05 May 2020 12:36
Last Modified: 05 May 2020 12:36
DOI or Identification number: 10.1111/sms.13591
URI: http://researchonline.ljmu.ac.uk/id/eprint/12883

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