The purpose of this study is to find out, by analyzing the barbell lift technique, how the differences in kinetic variables affect technical affairs, resulting in the differences among the different groups. For this, male players were classified according to their careers, and the comparative 3-dime...
The purpose of this study is to find out, by analyzing the barbell lift technique, how the differences in kinetic variables affect technical affairs, resulting in the differences among the different groups. For this, male players were classified according to their careers, and the comparative 3-dimensional image analysis was performed. 9 male weight lifting player were examined by 3-dimensional analysis, and the results are as follows: 1) Regarding the time spent for action, all the 3 groups show little difference in all phases. 2) Regarding the pull action and the second pull action, which are the first and second phases of the barbell longitudinal displacement, respectively, the Group C with the best career showed the lowest value among the 3 groups. Regarding the sit-up and stand-up actions, which are the third and fourth phases, respectively, there was little difference. 3) Regarding the front-back displacement, all the 3 groups showed little difference during the second pull action and the sit-up action, which are the second and third phases, respectively. 4) Regarding the barbell speed, all the 3 groups showed little difference in all phases. 5) Regarding the displacement of the physical center of gravity, all the 3 groups showed little difference in all phases. 6) Regarding the change in the articular angle, all the 3 groups showed little difference in all events. The result of the analysis of lift action according to the career showed that the group with less career and the group with intermediate career used more energy than is necessary; while, the group with the best career used energy efficiently by adjusting the height of barbell low when they pull and lift. All the 3 groups showed little difference in the time spent on action, barbell speed, front-back displacement and the displacement of physical center of gravity. Therefore, in order to use energy efficiently, there would have to be improvement in the time spent on action, barbell speed, the longitudinal and front-back displacements of barbell, and the displacement of physical center of gravity.
The purpose of this study is to find out, by analyzing the barbell lift technique, how the differences in kinetic variables affect technical affairs, resulting in the differences among the different groups. For this, male players were classified according to their careers, and the comparative 3-dimensional image analysis was performed. 9 male weight lifting player were examined by 3-dimensional analysis, and the results are as follows: 1) Regarding the time spent for action, all the 3 groups show little difference in all phases. 2) Regarding the pull action and the second pull action, which are the first and second phases of the barbell longitudinal displacement, respectively, the Group C with the best career showed the lowest value among the 3 groups. Regarding the sit-up and stand-up actions, which are the third and fourth phases, respectively, there was little difference. 3) Regarding the front-back displacement, all the 3 groups showed little difference during the second pull action and the sit-up action, which are the second and third phases, respectively. 4) Regarding the barbell speed, all the 3 groups showed little difference in all phases. 5) Regarding the displacement of the physical center of gravity, all the 3 groups showed little difference in all phases. 6) Regarding the change in the articular angle, all the 3 groups showed little difference in all events. The result of the analysis of lift action according to the career showed that the group with less career and the group with intermediate career used more energy than is necessary; while, the group with the best career used energy efficiently by adjusting the height of barbell low when they pull and lift. All the 3 groups showed little difference in the time spent on action, barbell speed, front-back displacement and the displacement of physical center of gravity. Therefore, in order to use energy efficiently, there would have to be improvement in the time spent on action, barbell speed, the longitudinal and front-back displacements of barbell, and the displacement of physical center of gravity.
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