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LMS is a recipient of a predoctoral contract FI-AGAUR (2021 FI_B 00595), and PLC is a recipient of a predoctoral contract FPU (FPU20/02747) del Ministerio de Universidades de Espana. This research was funded partially by TAARS and INEFC.The authors would like to express their gratitude to the volunteer players for their effort and commitment to the study. The authors would like to express their gratitude to Dr. Mario Lloret for his valuable technical assistance and to Anna Codina for her meticulous analysis and quantification of immunofluorescence studies. Furthermore, the authors are thankful to PB Anguera football club for their participation and generosity in providing competitive matches.

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Hamstrings on focus: Are 72 hours sufficient for recovery after a football (soccer) match? A multidisciplinary approach based on hamstring injury risk factors and histology

Publicado en:Journal Of Sports Sciences. 42 (12): 1130-1146 - 2024-08-02 42(12), DOI: 10.1080/02640414.2024.2386209

Autores: Carmona, Gerard; Moreno-Simonet, Lia; Cosio, Pedro Luis; Astrella, Andrea; Fernandez, Daniel; Cadefau, Joan Aureli; Rodas, Gil; Jou, Cristina; Milisenda, Jose Cesar; Cano, Maria Dolores; Aranega, Raquel; Marotta, Mario; Grau, Josep Maria; Padulles, Josep Maria; Mendiguchia, Jurdan

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This study aimed to assess acute and residual changes in sprint-related hamstring injury (HSI) risk factors after a football (soccer) match, focusing on recovery within the commonly observed 72-h timeframe between elite football matches. We used a multifactorial approach within a football context, incorporating optical and ultrastructural microscopic analysis of BFlh (biceps femoris long head) muscle fibres, along with an examination of BFlh fibre composition. Changes in sprint performance-related factors and HSI modifiable risk factors were examined until 3 days after the match (MD +3) in 20 football players. BFlh biopsy specimens were obtained before and at MD +3 in 10 players. The findings indicated that at MD +3, sprint-related performance and HSI risk factors had not fully recovered, with notable increases in localized BFlh fibre disruptions. Interestingly, match load (both external and internal) did not correlate with changes in sprint performance or HSI risk factors nor with BFlh fibre disruption. Furthermore, our study revealed a balanced distribution of ATPase-based fibre types in BFlh, with type-II fibres associated with sprint performance. Overall, the results suggest that a 72-h recovery period may not be adequate for hamstring muscles in terms of both HSI risk factors and BFlh fibre structure following a football match.

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