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기능적 족관절 불안정성 환자에서 발목 원판 훈련의 효과
나영무,문재호,성연재,이홍재,이한수,어은실 대한스포츠의학회 1999 대한스포츠의학회지 Vol.17 No.2
Objective : The purpose of this study is to determine the effect of the ankle disk training on the contraction pattern of peroneous longus and tibialis anterior muscles of the patients with functional ankle instability resulted from repeated inversion injury. Method : Fourteen patients with functional ankle instability and fourteen age-matched healthy subjects participated in this study. With attaching surface electrode to the peroneous longus and tibialis anterior muscles, inversion moment at the ankle was induced by a platform with trap door. While inducing inversion moment, onset time of contraction of the two muscles was assessed and compared by electromyography(EMG). And the changes in onset time of contraction between pretraining and post-six-week ankle disk training were assessed. Results : In experimental group, the onset time of contraction of the peroneus longus muscle during inversion moment was significantly slower than that of tibialis anterior muscle(p<0.05). And the difference of the onset time of contraction between peroneus longus muscle and tibialis anterior muscle was positively correlated with the number of time of injury(p<0.05). The onset time of contraction of the peroneus longus muscle in both stable and unstable ankle after the six-week ankle disk training became significantly short(p<0.05). Conclusion : This study examined the effect of ankle disk training as one form of proprioceptive training on muscle reaction times, and its results my explain why such training can help protect aganist further ankle sprain in patients with functional ankle instability.