종류별 기능성 인솔 착용에 따른 하지근육의 근활성도 분석

Abstract

The purpose of this study was to compare the difference in muscle activity of the lower extremity muscles according to the type of functional insole during normal walking. A total of fourteen male college students were recruited for this study. They were asked to walk with a general insole, a type A insole and a type B insole at a walking speed of 108 steps/min. To measure muscle activity of the lower extremities, EMG electrodes were attached to 7 muscles of the left lower extremity (gluteus medius, gluteus maximus, biceps femoris, gastrocnemius lateralis, adductor, rectus femoris, tibialis anterior). A one-way ANOVA was performed to compare the muscle activity (% RVC) of the lower extremity muscles according to the type of functional insole. The results showed that there were significant differences in biceps femoris (F=20.839, p=.000) and adductor (F=5.448, p=.008) among insole types. From the findings of this study, the following conclusions were derived: First, type A insole (with a mechanism to prevent arch deformation of the foot) was statistically significantly lower in biceps femoris activity than general and type B insoles due to the impact relaxation function of the material attached to the heel. Second, type B insole (supported by a hard wedge in the medial arch) was statistically significantly lower in adductor activity than type A insole, and thus can be effective in preventing the inversion or eversion of the foot.