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修改飞行时间方法:开发一种新的,更准确的方法来使用智能手机应用程序测量垂直跳跃高度
Takuya Nishioka1, Shota Yamaguchi1, Takayuki Inami1
1Institute of Physical Education, Keio University, Yokohama, Japan.
International journal of sports physiology and performance
|November 5, 2024
概括
一种新的修改后的飞行时间方法 (FTM) 通过考虑下肢曲来准确测量垂直跳跃高度 (JH). 这种可靠和有效的实地方法为传统的飞行时间测量提供了方便,低成本的替代方案.
科学领域:
- 生物力学 生物力学
- 运动科学 运动科学 运动科学
- 人类运动分析 人类运动分析
背景情况:
- 飞行时间方法 (FT) 是一种方便的实地技术,用于测量垂直跳跃高度 (JH).
- 由于下肢在着陆期间的曲,FT可以高估JH.
- 需要一个经过验证和可靠的方法来解决这个局限性.
研究的目的:
- 引入和评估一种修改的飞行时间方法 (FTM) 来测量垂直跳跃高度 (JH).
- 与传统的FT和冲动动量 (IM) 方法相比,评估FTM的有效性和可靠性.
- 为了确定FTM是否准确地测量JH,即使在降落时下肢曲.
主要方法:
- 24名男性参与者进行了反运动跳跃.
- 用力板 (1000 Hz),高速智能手机视频 (240 fps) 和拟议的FTM来测量跳跃高度.
- FTM使用智能手机追踪大三叉体标记器来计算飞行时间和JH.
主要成果:
- 与冲动动量 (IM) 方法相比,FT显著高估了JH (P < .001).
- 对于JH计算,FTM与IM没有显著差异.
- FTM表现出与IM和高可靠性的强烈,近乎完美的相关性 (ρ = .987),表现优于FT (ρ = .882).
结论:
- 修改的飞行时间方法 (FTM) 为测量反移动跳跃高度提供了卓越的并发有效性和高可靠性.
- 通过减轻下肢曲引起的高估值,FTM准确地测量了JH.
- 对于从业者来说,FTM提供了一个方便,低成本,更有效的基于现场的替代方案来评估垂直跳的性能.
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