立幅跳びの身体重心の分析
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概要
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The trajectory of the Center of Gravity in standing broad jumping was calculated fromthe films taken by a 16 mm high-speed cinecamera. In this calculation, the mass of each body segment of the subject was used which was obtained through the precisemeasurements of the body. This result was compared with the integral values of the force obtained by the force plate. Furthermore, a parabola was obtained after the initial velocityin the flight phase was determined through the integration of the force. Then, this parabola was compared with the trajectory of the Center of Gravity which was calculated from the films. Although there are some measurment errors, this comparison has shown that the trajectory corresponds closely to the parabola.
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