earticle

영어

The purpose of study was to clear up the environmental risk factor that can be easily occurred ankle sprain during gait (stance phase) and one leg standing at various ramp environment. Twenties healthy males of 48 subjects is participated in this study. Participants was measured muscle activation on peroneus longus during both conditions (walk across the ramp and one leg stand in the transverse direction) of seven different angle (0°, 2°, 5°, 10°, 15°, 20°, 25°). The measured data were analyzed using one-way ANOVA to investigate the effect of muscle activation on the each condition. The statistical analyses were performed using SPSS ver. 17.0 and p-value less than 0.05 were considered significant for all cases. A post-hoc test was performed by Tukey’s test. This study was approved by Kyungsung University's Human Research Ethics Committee. The study showed that more muscle activities on peroneus longus is increased by increasing the ramp angle. Post-hoc analysis demonstrated that the peak and mean of muscle activity increased significantly with a ramp angle of 10° and 25° during gait and one-leg stand. According to the study results, ankle sprain can be easily occurred when cross walk and one-leg stand on a ramp from higher than 10°, and highest risk was angle of 25° or more. As a people with peroneus longus weakness walks a ramp, the ramp angle has a cross relationship with the sprain on the ankle. If people with peroneus longus weakness walk on the more than 10° of ramp angle, they will need a lot of attention for prevent sprain on ankle. This study will provide the basic data about conditions of prevention ankle sprine ; when patients with peroneus longus weakness are walking and one-leg standing on the cross ramp.