뇌손상으로 인한 인체 마비근육의 토크 = 각도 특성

다국어 초록 (Multilingual Abstract)

The purpose of this study is to quantify the effect of damages of central nerve system, like stroke, on mechanical changes in paretic skeletal muscle. To test this, 11 persons with hemiplegia, both male and female in their 50s, were selected as the subjects of this study, and having synchronized dynamometer, electromyography and electrical stimulator, a variety of variables were measured. With regard to mechanical properties, torque-angle relationship was elicited by measuring the maximal torque of the ankle joint in plantarflexion. As for statistical verification, repeated measures ANOVA was conducted, and in case that there were significant differences in sub variables according to the changes in ankle angle, contrast test for the rest of the ankle angles based on anatomical 0° was performed. The results of analysis are as follows; 1) Maximal torque The results from analysis revealed that the maximal torque was greater in the paretic side than in the non-paretic side (p=.030) at all other angles, excluding the plantarflexion of 30° when resting, and at the time of twitch contraction rather than of resting (p=.000). And the more dorsiflexion increased, the greater the torque of ankle joint became (p=.000). 2) Torque-Angle Relationship Results from analysis indicated that the torque-angle relationship curve was inclined to make rather upward shift in the paretic side than in the non-paretic side.