25赫兹GNSS单元的同时有效性和单元间可靠性,用于分析冲刺性能
Louis Dennison1, Grant M Duthie1,2, Fabian Ehrmann3
1Faculty of Behavioural and Health Sciences, Australian Catholic University, Strathfield, New South Wales, Australia.
Journal of strength and conditioning research
|October 24, 2024
概括
新的25赫兹全球导航卫星系统 (GNSS) 单元准确地测量冲刺表现,为教练提供可靠且具有成本效益的替代方案. 这些设备为训练和比赛期间的运动发展提供了有效和一致的数据.
科学领域:
- 运动科学 运动科学 运动科学
- 生物力学 生物力学
- 绩效分析 绩效分析
背景情况:
- 准确的冲刺分析对于运动员的发展至关重要.
- 传统的测量系统通常很昂贵或不适合现场使用.
- 更高的采样率全球导航卫星系统 (GNSS) 单位可能提供解决方案.
研究的目的:
- 为了评估与标准设备相比的25赫兹GNSS单元的并发有效性.
- 为了评估25赫兹GNSS单元的单元间可靠性.
- 为了确定GNSS单元对速度和冲刺时间测量的一致性.
主要方法:
- 使用30名运动员进行最大40米冲刺的同时有效性评估,同时通过GNSS,激光设备和计时门进行测量.
- 在60次加速 (0-60m) 期间,在车辆上使用三个GNSS单元测试了单位间的可靠性.
- 统计分析包括偏差,典型误差和类内相关系数 (ICC).
主要成果:
- 低平均偏差 (<1%) 和典型误差 (<2%) 表明GNSS和标准设备之间有很好的一致性.
- 在所有间隔时间 (0-10m至10-60m),总冲刺时间 (0-60m) 和最大冲刺速度 (ICC值在0.86至1.0之间) 中,发现了良好的至优异的单位间可靠性.
- 25赫兹GNSS单元显示出高有效性和可靠性,用于分析冲刺性能.
结论:
- 25赫兹GNSS单元是传统冲刺测量设备的有效,可靠和可行的替代方案.
- 这项技术使得可扩展的,同时评估多名运动员在现场设置中的冲刺表现.
- 教练可以利用GNSS数据在运动发展和训练中做出基于证据的决策.
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