出版社：Japan Society of Physical Education, Health and Sport Sciences
摘要：In round off backward tuck somersault on the mattress, the pressure at the time of take-off was measured by means of the strain gauge. In three groups of subjects consisting of experts, the moderately well trained and beginners respectively, the pressure given to the take-off board at the time of take-off, the take-off time, the length of time when the pressure was given to the board and the repulsion time were measured. Furthermore, these measurements were repeatedly taken during the process of learning the performance of the round off backward tuck somersault in two subjects. The results obtained were as follows: 1. The pressure per kg. of body weight at the time of takeoff was less in beginners than in experts. 2. The takeoff time of beginners was longer than that of experts. 3. The length of time the pressure was given to the board was more variable in beginners than in experts. 4. The repulsion time was longer in beginners than in the moderately well trained and in experts. 5. As the two beginners who became more adept in the performance, the pressure per kg. of body weight, the length of take-off time and of repulsion time approached the values obtained in experts.
其他摘要：In round off backward tuck somersault on the mattress, the pressure at the time of take-off was measured by means of the strain gauge. In three groups of subjects consisting of experts, the moderately well trained and beginners respectively, the pressure given to the take-off board at the time of take-off, the take-off time, the length of time when the pressure was given to the board and the repulsion time were measured. Furthermore, these measurements were repeatedly taken during the process of learning the performance of the round off backward tuck somersault in two subjects. The results obtained were as follows: 1. The pressure per kg. of body weight at the time of takeoff was less in beginners than in experts. 2. The takeoff time of beginners was longer than that of experts. 3. The length of time the pressure was given to the board was more variable in beginners than in experts. 4. The repulsion time was longer in beginners than in the moderately well trained and in experts. 5. As the two beginners who became more adept in the performance, the pressure per kg. of body weight, the length of take-off time and of repulsion time approached the values obtained in experts.
