The Comparison of Isokinetic Parameters of Hip and Knee Joint Muscles in Professional Soccer Players with Athletic Groin Pain and Healthy One: Implications for Sports Injuries Prevention

This study aimed to investigate the comparison of isokinetic parameters of hip and knee joint muscles in professional soccer players with athletic groin pain (AGP) and healthy ones.

32 soccer players (control group (n=16) and AGP group (n=16)) who take part in the first and second division league participated in this study. The isokinetic dynamometer with a speed of 90 degrees per second was used to evaluate the selected isokinetic parameters.

The independent sample T-test showed that the mean power and rate of torque development in concentric contraction except in knee flexors muscles was significantly higher in the control group. The relative peak of torque in the adductor muscles group in concentric contraction and the hip and knee flexor-extensor groups in concentric and eccentric contraction was also significantly higher in the control group than the AGP ones. In the control group, the hip extensor muscle torque in concentric contraction occurred significantly at a higher flexion range of motion. The acceleration time of the knee extensor muscle group in concentric and eccentric contraction and the adductor group in concentric contraction was significantly shorter than the APG group.

The present study's findings showed that athletic groin pain could affect the isokinetic profile of the hip and knee joint muscles, which were more pronounced in concentric contraction. It is suggested that coaches pay special attention to concentric contractions in the final stages of an athlete's back to the sport.