تاثير اجراي يك دوره تمرين قدرتي بر ميزان نسبت قدرت عضلات اورتور به اينورتور در بازيكنان فوتبال مبتلا به بي‌ثباتي مزمن مچ پا

The effect ofsix weeks strength training on eversion to inversion ratios in soccer players with chronic ankle instability

Ankle sprain is considered as common athletic injuries and long-time disabilities after initial injury cause athletes loose more time and function deficit .The aim of this study was to examine the effect of ankle strength training on eccentric eversion/concentric inversion peak torque ratios in soccer players with chronic ankle instability. Twenty four soccer players participate in this study that separated in to a unstable or healthy group. After clinical evaluations, isokinetic tests were performed in concentric and eccentric nlode on ankle. Post tests were performed in unstable ankle group after six weeks strength training three times a week. Speeds on isokinetic test were selected 60 and 120 degree per second. We used t-student for Statistical analysis. Statistical analysis for evertor peak torque/body weight in both speeds was significantly less in unstable group. No significant differences were observed in evertor, invertor and invertor/body weight ratios between control and unstable group. This study specified that weakness of evertor muscle maybe one of factors contribute in chronic ankle instability and strength training can improve muscle strength ratios in these subjects.