The effect of isometric and isokinetic Hamstring and Quadriceps muscle strength on Hamstring strain prediction in professional, amateur and juniors German soccer players

Authors

  • Yahya Kianmarz

DOI:

https://doi.org/10.12922/jshp.v7i2.141

Keywords:

strength imbalance, torque, Injury prevention, soccer

Abstract

Abstract

Hamstring strain is one of the most prevalent injuries in soccer. Lower extremity muscle asymmetry and strength deficiency have been introduced as risk factors for predicting a Hamstring strain. The aim of this study was to analyze the relationship between the lower extremity asymmetry and strength deficiency on Hamstring strain in soccer players. Hamstring and Quadriceps isokinetic and isometric strengths were obtained and Hamstring to Quadriceps conventional and functional ratio were calculated between the injured and uninjured leg. The results indicate that the Hamstring’s isokinetic concentric strength at both 60°.s-1 and 180°.s-1,and isokinetic eccentric strength at 60°.s-1 were significantly different between the injured and uninjured leg. The Quadriceps isokinetic concentric strength at 60°.s-1 was significantly different between the injured and uninjured leg. Similar differences were observed between the maximum isometric strength and eccentric leg press strength between the injured and uninjured leg. However, these differences in strength did not predict Hamstring strain.     

Keywords: strength imbalance, torque, Injury prevention, soccer

Author Biography

  • Yahya Kianmarz

    Universität HamburgInstitut für Sport- und Bewegungsmedizin
    Turmweg 2, 20148 Hamburg, Germany

Additional Files

Published

2019-10-28

Issue

Vol. 7 No. 2 (2019): Journal of Sport and Human Performance

Section

Original Research Articles

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