The comparison of knee isokinetic performances and anthropometric measurement of professional soccers who play different position

Abstract

The aim of our study is determine knee flexibility and knee isokinetic performance of soccer players who play different position. In this study nineteen professional soccer players who play in Kocaelispor were choosen as a subjects. Range of movement (ROM)of knee and  the knee flexion/extension muscle strengths were measured. In this measurement were used  60, 180 and 300 deg/sec con-con angular velocity protochol using biodex system III dynamometer.Statistically significant difference was found of total work of knee extensor in 60°/s between forwards and midfielders and also between forwards and defenders(p<0.05). Ekstansor muscle strength of forwards less than which of defenders and which of midfielders. Statistical differences were shown in 60°/s Peak Torque/body weight of between midfielders and defenders. Defenders have higher extensor muscle strength but lower values ROM. As the muscle strength and volume increase muscle get shorter. This can make risk for injures.While an exercise program is prepared play position must taken into consideration after isokinetic tests. Especially joint flexibility is indicator for future injures.