Abstract
By using the surface electrodes to record the electromyograms of the muscles of the lower limbs, we studied the instep kick action with a soccer ball. By using an experienced player and one without experiences we came out with different results. 1. Different muscles are used. 2. Differences in the pattern of action potensial were noted. Largely noticed was the stableness of the thigh-joints and the ankle-joints. The kick was given with the extension of knee-joints. The main muscles used in this movement were m. quadriceps femories and the adducent muscles. With the unexperienced, unstableness Was found at the thigh-joints and ankle-joints contoary to those of the former.
