東京オリンピック大会出場重量挙選手を中心とした試合時三種目の動作分析結果について

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High ranking Japanese weightlifters in Tokyo Olympics and high ranking adults and high school students in the 20th Japan National Athletic Meeting were chosen for the subjects. We made research about them for many patterns of movements of the Olympic three lifts which seemed to be the most reasonable way in analyzing the rnovements of the lifters, by comparing the results which were gotten by the 16 mm 64 frames side filming method with their official records and lifting marks. This led to the following conclusion : l) At the: beginning of the clean, dead-lift, for the press the excellent lifters accelerate the bar at a higher speed, but the increase of speed after the beginning is not so much. The Olympic lifters pull up the bar bending more forward, at a knee level. But excessive foreword bending makes many lifters fail to clean wheel. 2) Excellent lifters begin pressing at a high speed by vigorous extension of their body, Less-trained lifters can not use vigorous extension of their body because of presing forward, or comming down the bar again, and bending the keener joints. 3) In the snatch excellent lifters pull up the bar at a higher speed to the knees, but they at a speed of lower acceleration from the knees. Even if they are excellent lifters, they often fail to snatch in the case of pulling with over-acceleration at that point. It is important also in the snatch to use effectively the power of lower ports oil the body. 4) It is evident from the loci of the bar that, if the bar travels upward vertically, or near vertically, squat-style lifters need to jump back properly In the case they do not jump back the for moves back and forth excessively. many lifters fail to snatch if they jump back too much. 5) In the clean for the jerk an increasing acceleration in dead lift phase during c][earn is necessary to become a successful lifter. It is necessary to concentrate the power of the lower parts of the body as much as possible to accelerate on the bar to a knee level. From the knee level excel lent lifters pull the bar by using the pulling power of shoulders more actively. The barbell falling down from the dead point
1966-03-01

東京オリンピック大会出場重量挙選手を中心とした試合時三種目の動作分析結果について

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