Analysis of isokinetic knee strength in soccer players in terms of selected parameters

Abstract

Purpose: The aim of study is to analyse isokinetic knee strength in soccer players in terms of selected parameters. Methods: A total of 30 subjects, 15 soccer players and 15 controls, were included in the study. Isokinetic knee strength measurements at angular speeds of 60°sec-1, 180°sec-1 and 240°sec-1 and pro-agility tests were conducted on the subjects. A body analyser was used for height, weight and body mass indexes (BMI) values. The training ages of the subjects and the positions of the soccer player group were recorded on personal information forms. Results: When the agility parameters were compared between football and control groups, a statistical difference was found in favour of the soccer player group (p < 0.05). When the effects of body composition and isokinetic knee strength on agility were analysed, negative significant correlation was found between weight and agility, BMI and agility and 240° right knee extension strength and agility (p < 0.05). When the positions of soccer players and isokinetic knee strengths were compared, significance was found between 60° right extension strength of defenders and midfielders and 60° left extension-flexion strengths of defenders and midfielders and forwards in favour of defenders (p > 0.05). Conclusions: In conclusion, it was found that isokinetic knee strength did not have an influence on agility in low angular speeds, except for 240°sec-1 right extension. According to positions, as the isokinetic knee strength of defenders decreased, they showed higher results when compared with other positions.