从两个微技术传感器记录的加速计时间序列中的平均值和的比较,在年轻精英橄球联赛球员的累积球过程中以100与1000Hz的频率记录
Bruno Fernández-Valdés1, Ben Jones2,3,4,5,6, Sharief Hendricks2,3
1Research Group in Technology Applied to High Performance and Health, TecnoCampus, Department of Health Sciences, Universitat Pompeu Fabra, 08302 Barcelona, Spain.
Sensors (Basel, Switzerland)
|January 8, 2025
概括
较高的采样速度可以在爆炸过程中捕获更准确的运动数据. 1000 Hz 加速度计适用于分析橄球球,为球员表现和伤害预防提供更好的洞察力.
科学领域:
- 运动科学 运动科学 运动科学
- 生物力学 生物力学
- 可穿戴技术可穿戴技术
背景情况:
- 目前用于团队运动的全球定位系统 (GPS) 设备通常采样频率为5-15 Hz,这可能不足以捕捉像碰撞这样的短暂爆炸性行为.
- 众所周知,非常高频采样能够捕捉运动的快速变化,这对于分析体育运动中的高影响事件至关重要.
- 了解采样频率对数据准确性的影响对于优化表现分析和精英运动员受伤风险评估至关重要.
研究的目的:
- 为了比较来自100 Hz和1000 Hz三轴加速度计的平均加速度和值,在橄球运动员的解决行动中.
- 评估采样频率对在短,爆炸性的运动运动中量化外部负荷和运动复杂性的影响.
主要方法:
- 十一名精英青少年男子橄球联赛球员参加了比赛,进行了200次攻克行动.
- 每个玩家同时佩戴两个三轴加速度计,采样100 Hz和1000 Hz,每个玩家同时佩戴两个三轴加速度计.
- 分析重点是平均加速,样本 (SampEn) 和近似 (ApEn),以评估频率之间的数据差异.
主要成果:
- 与100Hz装置相比,1000Hz加速度计记录的平均加速度值明显高 (p < 0.05).
- 使用100Hz加速度计分析时,样本 (SampEn) 和近似 (ApEn) 显著更高 (p < 0.05).
- 在所有分析的参数中,两种设备之间发现了强烈的相关性 (R2 > 0.5,p < 0.0001),这表明尽管频率差异很大,但仍然存在良好的协议.
结论:
- 采样频率对团队体育分析中从加速度计获得的数据质量和指标产生重大影响.
- 1000Hz的采样频率似乎更适合准确地捕捉像橄球 tackles 这样的短暂,爆炸性的行动的细微差别.
- 更高的采样频率为更精确的运动数据收集提供了潜力,有助于详细的性能和生物力学分析.
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