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The purpose of this study was to find out the effects of depending on variations of speed in backward walking on lower extremities muscle. For this study, 30 members were randomly divided into three groups; groupⅠ(n=10, forward walking: 5km/h), groupⅡ(n=10, backward walking: 5km/h), groupⅢ(n=10, backward walking: 2.5km/h). This exercise was performed to 30 minutes 4 times a week for 4 weeks. This study was measured before the exercise and after 4 weeks. The result of this study are as follows. The muscle activity of rectus femoris was higher in backward walking group(p<.01) than in forward walking group and it was the highest at groupⅡ(p<.001). The quadriceps muscle strength of thigh was higher in backward walking group(p<.01) than in forward walking group and it was the highest at groupⅡ(p<.001). From these results, backward walking training was effective on muscle activity, strength of thigh muscle. Although fast speed backward walking was most effective, low speed backward walking that compare with forward walking was effective.

The Effect of Depending on Variations of Speed in Backward Walking on Lower Extremities Muscle