The correlation between isokinetic muscle strength and balance function in patients with chronic ankle instability
Objective In this study,correlations were performed between ankle isokinetic muscle strength and balance,to help the evaluation of factors relating to chronic ankle instability.Methods One hundred and fifty patients with chronic ankle instability(CAI)were randomly recruited as the study subjects.Isokinetic muscle strength was tested on the first day,and the results of tests examining bilateral varus valgus,metatarsal flexion and dorsiflexion at different angular velocities were collected.After two days of rest,the balance function tests,including static balance tests(one-leg heel elevation test,one-leg squat test)and dynamic balance tests(one-leg jump test,two-leg jump test and avoidance test)were conducted.We explored the difference in muscle strength between the muscle groups of the bilateral ankle joint,and the correlations between muscle strength and the dynamic and static balance tests.Results In patients with chronic ankle instability,the varus muscle strength of the affected side[(21.5±10.2)N·m]was significantly lower than that of the healthy side[(25.5±11.2)N·m;P＜0.05].There were no significant differences in valgus,metatarsal flexion or dorsal flexion strength between the healthy side and the affected side(P＞0.05).In the static balance test,there was a low correlation between the single leg standing test and varus muscle strength defect(r=0.246).There was a moderate correlation between the single heel elevation test and varus muscle strength defect(r=0.514).In the dynamic balance test,there was a low correlation between the avoidance test and varus muscle strength defect(r=0.229).Conclusion In the evaluation of chronic ankle instability,there is a correlation between isokinetic muscle strength and balance function.The balance function tests bring benefits to the clinical evaluation of ankle condition and isokinetic muscle strength.
Chronic ankle instabilityIsokinetic muscle strengthBalance function
万方数据
维普
