开发一个基于MediaPipe的框架,用于表球前手的生物力学量化
Yuanyuan Lyu1, Xiaoling Duan2, Chen Yang1
1School of Sport and Health Science, Nanjing Sport Institute, Nanjing, China.
Frontiers in sports and active living
|September 2, 2025
概括
桌球前手的击球通过增加手臂和旋转运动来优化. 这项研究量化了轻量级诊断的关键生物力学参数,
科学领域:
- 生物力学
- 运动科学
- 人类运动分析
背景情况:
- 桌球需要精确的技巧才能达到最佳表现.
- 现在的诊断工具可能很麻烦和昂贵.
- 需要轻量级的单摄像头解决方案来进行可访问的分析.
研究的目的:
- 在乒乓球前手中量化身体部分的运动关系.
- 为基于单摄像头的轻量级诊断开发可解释的指标.
- 为了确定与球速度相关的生物力学参数.
主要方法:
- 分析了34名女性乒乓球运动员 (年龄在9.1-21.7岁之间).
- 使用MediaPipe进行位置时间序列分析以提取速度,角度和角速度.
- 计算主体内和主体间的相关系数,以链接运动和球速.
主要成果:
- 增加的球速度与更大的线性手臂运动 (肩膀,肘部,手腕) 和旋转运动 (上臂,肩膀线,部线) 相相关.
- 过度的对侧肩曲/伸缩和打球侧肘曲/伸缩降低了球速.
- 球的速度随着年龄的增长而增加到14.3岁,然后平稳.
结论:
- 基于MediaPipe的框架可以在乒乓球中进行高效的生物力学分析.
- 这种方法为轻量级的实时分析解决方案提供了有希望的基础.
- 确定关键的动力学参数可以为教练和球员的发展提供信息.
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