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Sprint running mechanics are associated with hamstring strain injury: a 6-month prospective cohort study of 126 elite male footballers

Bramah, Christopher; Rhodes, Samantha; Clarke-Cornwell, Alexandra; Dos'Santos, Thomas

Authors

Samantha Rhodes

Thomas Dos'Santos



Contributors

Samantha Rhodes
Researcher

Thomas Dos'Santos
Researcher

Abstract

Objective: To investigate the association between sprint running biomechanics and sprint-related hamstring strain injury (HSI) in elite male football players. Methods: This prospective cohort study recruited 126 professional male football players from eight clubs in the English football league, who were followed across a 6-month period. Maximal velocity sprint running videos (240 fps) were collected from five teams during preseason (June to August) and three teams during the in-season period (October to March) and subsequently assessed using the Sprint Mechanics Assessment Score (S-MAS) by a single, blinded assessor. Sprint-related HSI within the previous 12 months and any new MRI-confirmed sprint-related HSI were reported by club medical staff. Incidence rate ratios were calculated using a Poisson regression model to determine the association between S-MAS and new sprint-related HSIs. Results: There were 23 players with a previous sprint-related HSI and 17 new HSIs during the follow-up period, with 14 sprint-related injuries. S-MAS values were significantly greater among players with a previous HSI (median difference (MD): 1, p=0.007, 95% CI: 0 to 3) and those sustaining a new sprint-related HSI (MD: 2, p=0.006, 95% CI: 1 to 3) compared with uninjured players. Adjusting for age and previous injury found a significant association between the S-MAS and prospective sprint-related HSIs, with an adjusted incidence rate ratio of 1.33 (95% CI: 1.01 to 1.76) for each one-point increase in S-MAS. Conclusions: This is the first study to identify an association between sprint running kinematics and prospective sprint-related HSI in elite male football players. Sprint running mechanics assessed using the S-MAS were associated with both past and future HSIs, with a 33% increase in the risk of a new HSI with every one-point increase in S-MAS. Given the association to injury, evaluating sprint mechanics within rehabilitation and injury prevention may be warranted.

Journal Article Type Article
Acceptance Date Mar 11, 2025
Online Publication Date Mar 23, 2025
Publication Date Mar 23, 2025
Deposit Date Mar 12, 2025
Publicly Available Date Mar 23, 2025
Journal British Journal of Sports Medicine
Print ISSN 0306-3674
Electronic ISSN 1473-0480
Publisher BMJ Publishing Group
Peer Reviewed Peer Reviewed
Volume 59
Issue 14
Pages bjsports-2024-108600
DOI https://doi.org/10.1136/bjsports-2024-108600
Keywords Football, Running, Rehabilitation, Sporting injuries, Hamstring Muscles