運動動作と生理機能(VII) : アイス・ホッケーのショット動作

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Since 1969,the studies of relationship between trhee-dimentional locomotion of lumbar region and electrophysiological phenomena have been investigated by use of our devised PLPA (Physical Locomotion Pursuit Analyzer, SN method) This time, we took the shot motion of the ice hockey skater among voluntary motion and compaired the athlete and the non-athlete on the motion of the lumbar region, the electromyogram of upper limbs and the twist of the body. The obtained results in this experiment are as follows; 1. Motion of the lumbar region investigated by the use of PLPA. 1) The right handed athlete moves his lumbar region from lower right to upper right on impact of the shot motion, and then moves to lower left. That is to say that the lumbar region of subject is the center of motion. 2) The non-athlete moves his lumbar region from a little bit lower left to the upper right on impact. Because a large motion is shown, we do not think it is as effective a shot motion. 2. Electromyogram of upper limbs. 1) On impact of the athlete, the discharge appeared on 1. m. biceps brachii by drawing the stick and also on r. m. triceps brachii by pushing. 2) On impact of the non-athlete, the burst of discharge, however it was small, appeared. But the discharge on 1. m. deltoideus continued after impact. In the future we will investigate the motion of exercise, and think it will be a help to the teachers.
1979-03-31