全球定位系统技术的有效性,以测量精英冲刺者冲刺的最大速度
Matthew Thome1,2, Robin T Thorpe3,4, Matthew J Jordan1,5
1School of Medical and Health Sciences, Centre for Human Performance, Edith Cowan University, Joondalup, Western Australia.
Journal of strength and conditioning research
|November 28, 2023
概括
全球定位系统 (GPS) 技术可以测量精英短跑者的最大速度冲刺,但其高估可能会限制检测小的性能增长. 这项研究验证了10赫兹GPS与雷达对冲刺分析的有效性.
科学领域:
- 运动科学 运动科学 运动科学
- 生物力学 生物力学
- 竞技表现运动员的表现
背景情况:
- 精准测量最快速冲刺 (Vmax) 对于精英冲刺者来说至关重要.
- 可穿戴全球定位系统 (GPS) 技术为跟踪冲刺表现提供了一个便携式解决方案.
- 与多普勒雷达等标准措施相比,10赫兹GPS的同时有效性需要在精英人口中进行彻底的调查.
研究的目的:
- 评估10Hz可穿戴GPS技术在精英短跑者中测量Vmax的并发有效性.
- 为了比较从10赫兹GPS获得的Vmax测量与来自47赫兹多普勒雷达系统的测量.
- 确定10赫兹GPS适用于监测精英短跑运动员的外部负载和性能变化.
主要方法:
- 精英100米和200米短跑者 (n=7) 参加了这项研究.
- 速度和时间数据同时采集使用10赫兹GPS和47赫兹多普勒雷达在最大60米冲刺努力期间.
- 使用布兰德-阿尔特曼95%一致限值 (LOA) 和类内相关系数 (ICC) 分析了有效性.
主要成果:
- 10赫兹GPS显示出与多普勒雷达的高度一致性,其ICC为0.99 (95%CI:0.98,1.0).
- GPS和雷达之间的Vmax的平均差异 (LOA) 为-0.11m·s-1 (95%CI: -0.17, -0.05),表明GPS略有高估.
- 通过10赫兹GPS观察到的高估值 (约1%) 大于精英短跑运动员 (0.1-0.2%) 典型的年度改进.
结论:
- 与多普勒雷达相比,10赫兹的GPS技术是测量Vmax和监控精英短跑者外部负载的有效工具.
- 虽然GPS显示出良好的一致性,但其对Vmax的轻微高估可能会阻碍在训练有素的运动员中检测出小而有意义的性能改善.
- 教练和研究人员在解释10赫兹GPS的Vmax数据时应考虑潜在的高估值.
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