1998 年 11 巻 1 号 p. 113-121
The purpose of this study was to investigate quantitatively changes of the muscle activity on the whole body during the instep kicking. Twenty-seven soccer players participated in a shooting task consisting of ten kicks. They were classified into two groups (high-skilled and low-skilled) according to the performance of the shooting task. The results indicated that the high-skilled group relaxed trapezius activity just before the impact stage and tensioned the muscles on the leg efficiently. Our findings suggest that a ratio of the EMG activities during a kicking is valid for the quantitative analysis of the muscle activity as well as the integrated EMG value.