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首页> 外文会议>International Symposium on Biomechanics in Sports vol.1; 20050822-27; Beijing(CN) >ANALYSIS OF ANGULAR MOMENTUM THE WHOLE BODY DURING GLIDE HITTING AND KICK HITTING IN BASEBALL
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ANALYSIS OF ANGULAR MOMENTUM THE WHOLE BODY DURING GLIDE HITTING AND KICK HITTING IN BASEBALL

机译：滑行命中和踢中命的全身体角动量分析

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摘要

The purpose of this study were to analyze the biomechanical characteristics of glide and kick hitting in baseball which exerted by professional baseball players in Taiwan. Five professional baseball players were selected as the subjects. The experiment used two JVC-DV 9800 high-speed digital cameras(120 Hz).The video data was treated by Kwon3D 3.0 motion analysis system. The following are the main results: The kick hitting could get better rotation benefit and optimum. In the stride phase, angular momentum of the body is increasing by body inertia. In the rotation phase, the velocity increasing of the body center of gravity makes the angular momentum increase. The largest angular momentum appears right before the ball hit. Because the body inertia in ball hitting moment was very small, the angular momentum was mainly affected by angular velocity. In the phase, the average value, largest value and hitting moment value of angular momentum with kick hitting are larger than those with glide hitting. Therefore, the kick hitting could get larger linear and angular momentum.
机译：这项研究的目的是分析台湾专业棒球运动员所发挥的滑行和踢球的生物力学特性。选出了五名职业棒球选手作为对象。实验使用两台JVC-DV 9800高速数码相机（120 Hz），视频数据经过Kwon3D 3.0运动分析系统处理。以下是主要结果：踢球可以获得更好的旋转效果和最佳效果。在跨步阶段，身体的角动量因身体惯性而增加。在旋转阶段，身体重心的速度增加会使角动量增加。最大的角动量出现在击球之前。由于击球力矩中的物体惯性很小，因此角动量主要受角速度影响。在该阶段中，踢脚击中角动量的平均值，最大值和击中力矩值大于滑行击中角动量的平均值，最大值和击中力矩值。因此，脚踢可以得到更大的线性和角动量。

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