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Journal Article

Citation

Dauty M, Menu P, Fouasson-Chailloux A, Ferréol S, Dubois C. Muscles Ligaments Tendons J. 2016; 6(1): 116-123.

Affiliation

Department of Pôle MPR, Hôpital Saint Jacques, CHU NANTES, France.

Copyright

(Copyright © 2016, CIC Edizioni Internazionali)

DOI

10.11138/mltj/2016.6.1.116

PMID

27331039

PMCID

PMC4915450

Abstract

OBJECTIVES: previous studies investigating the ability of isokinetic strength ratios to predict hamstring injuries in soccer players have reported conflicting results. HYPOTHESIS: to determine if isokinetic ratios are able to predict hamstring injury occurring during the season in professional soccer players. STUDY DESIGN: case-control study; LEVEL OF EVIDENCE: 3.

METHODS: from 2001 to 2011, 350 isokinetic tests were performed in 136 professional soccer players at the beginning of the soccer season. Fifty-seven players suffered hamstring injury during the season that followed the isokinetic tests. These players were compared with the 79 uninjured players. The bilateral concentric ratio (hamstring-to-hamstring), ipsilateral concentric ratio (hamstring-to-quadriceps), and mixed ratio (eccentric/concentric hamstring-to-quadriceps) were studied. The predictive ability of each ratio was established based on the likelihood ratio and post-test probability.

RESULTS: the mixed ratio (30 eccentric/240 concentric hamstring-to-quadriceps) <0.8, ipsilateral ratio (180 concentric hamstring-to-quadriceps) <0.47, and bilateral ratio (60 concentric hamstring-to-hamstring) <0.85 were the most predictive of hamstring injury. The ipsilateral ratio <0.47 allowed prediction of the severity of the hamstring injury, and was also influenced by the length of time since administration of the isokinetic tests.

CONCLUSION: isokinetic ratios are useful for predicting the likelihood of hamstring injury in professional soccer players during the competitive season.


Language: en

Keywords

eccentric; muscle contraction; sports; strength

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