Effect of Different Ankle Positions on Knee Extensor Muscle Force in Healthy Subjects

The aim of this study was to evaluate the effect of different ankle positions on knee extensor muscle force in healthy subjects. Twenty healthy male subjects with age range from 18 to 24 years participated in the study. The values of isometric knee extensor force were tested using a hand-held dynamometer (HHD). Results showed nonsignificant differences in the isometric knee extensor force between neutral ankle position and both ankle inversion and eversion. Whereas, there were significant differences in the isometric knee extensor force between neutral ankle position and both dorsi-flexion and planter-flexion. The study concluded that both ankle dorsiflexion and planter-flexion could be used to facilitate quadriceps muscle force in the rehabilitation program.