使用IMU和可变性功能集群在冲刺前游泳期间对生物力学能力进行分析
Antoine Bouvet1,2,3, Robin Pla4,5, Erwan Delhaye1,2
1M2S Laboratory (Movement, Sport & Health), University Rennes 2, ENS Rennes, Bruz, France.
Sports biomechanics
|June 18, 2024
概括
精英游泳者表现出一种"冲动"的冲动,其重复性较低,以达到最大速度. 这种变化的组合是爆炸性前爬泳的关键,可以为训练策略提供信息.
科学领域:
- 生物力学 生物力学
- 运动科学 运动科学 运动科学
- 游泳表现分析 游泳表现分析
背景情况:
- 了解冲刺前爬行表现的生物力学决定因素对于优化训练至关重要.
- 以前的研究集中在平均动力学上,对周期内和周期间的变化不太注意.
研究的目的:
- 通过识别技术性冲动特征,在冲刺前部爬行过程中对生物力学能力进行分析.
- 为了研究冲击变化,游泳速度和比赛口径之间的关系.
主要方法:
- 91名游泳者 (从娱乐游泳到世界级游泳) 进行了25米全力以赴的冲刺,他们戴着一个穿戴在阴道上的惯性测量单元 (IMU).
- 循环内部和循环间的3D动力学变异性使用功能双分区模型进行了集群.
- 使用统计分析 (ANOVA,Chi-squared,Gamma统计) 基于技术和性能来比较集群.
主要成果:
- 游泳者表现出不同的技术概况,包括循环内 ("平滑"和"冲动") 和循环间 ("低,中等"和"高重复性").
- 这些技术档案因游泳速度和竞争水准而受到显著歧视.
- "冲动性"的周期内变异性和"低重复性"的周期间变异性的组合与最高速度 (1.86 m/s) 和精英比赛水平有关.
结论:
- 特定的周期内和周期间冲动变量的组合对于达到顶峰冲刺前爬行性能至关重要.
- 技术技能在游泳可能涉及特定对齐的冲动模式和相对于任务需求的分散.
- 这种数据驱动的方法可以增强传统的基于眼睛的技术评估,并指导短跑者的训练,强调爆炸力和身体稳定性.
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