Abstract
In the Physical training, the intensity of the mechanical effect of the mass load upon the body varies depending on the vertical motion and the acceleration of the body. The authors intended in this thesis to analyze, using a cinematogragraphic technique, the following two aspects of the curl movement, one of the typical weight training methods: (1)Measurement of the mechanical effective value which the training load, including the mass of the body segments, shows during the curl movement. (2)Examination of the cycle patterns of the vertical motion, velocity, mechanical energy, power and force. The results of this experiment are listed below. 1: The ratio between the dumbell weight and the mechanical effective value in motion was as follows: the value of this ratio when average in time was five with the dumbell weighing 1.2kg.: three with 3.00kg.; two with 5.00kg, and the maximum value was ten to fifteen with the dumbell weighing 1.20kg.; five with 3.00kg.; three to four with 5.00kg. 2: The curves of selected parameters showed the following patterns. The vertical motion showed a mono-peak wave pattern, while the change in velocity Showed two similar peaks. The pattern of the power and force looked very much alike: a large positive peak followed by a small negative peak, a small positive peak, and finally a large negative peak. 3: There were certain phase differences in the pattern between the velocity and energy, and between the power and force.
