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. 2016 May 19;6(1):116-23.
doi: 10.11138/mltj/2016.6.1.116. eCollection 2016 Jan-Mar.

Prediction of hamstring injury in professional soccer players by isokinetic measurements

Marc Dauty  1 , Pierre Menu  2 , Alban Fouasson-Chailloux  2 , Sophie Ferréol  2 , Charles Dubois  2
Affiliations

Prediction of hamstring injury in professional soccer players by isokinetic measurements

Marc Dauty et al. Muscles Ligaments Tendons J. .

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.

Keywords: eccentric; muscle contraction; sports; strength.

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Figures

Figure 1
Figure 1
Study design.
See this image and copyright information in PMC

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