Comparison of Repositioning Error According to Eccentric and Concentric Contraction of the Ankle Dorsiflexor Muscle in the Ankle Joint

ABSTRACT

Purpose@#This study compared the movement control ability of the ankle joint according to the type of muscle contraction, namely, eccentric or concentric contractions. @*Methods@#Thirty-four healthy adult subjects participated in this study. As a single group, before the experiment, the subjects were trained on achieving the required position of the ankle around the target point by manually controlling the ankle dorsiflexion by 10°. Concentric contraction starts at 0° and continues until the target point of 10° is reached. During an eccentric contraction, the ankle joint starts at 20° ankle dorsiflexion and continues till the target point is reached. Movements using eccentric contraction and concentric contraction were randomly performed 3 times each. @*Results@#The results of comparing the difference in the movement control ability of each type of muscle contraction of ankle dorsiflexion showed that the measurement-remeasurement error was significant in eccentric contraction. @*Conclusion@#In this study, we found a difference in the ability to control movement according to whether the contraction is eccentric or concentric. Therefore, we propose that the ability to control movement is affected by the type of muscle contraction.