先进的鞋类技术尖端对冲刺加速的影响:多次N-of-1试验
Benjamin Bernuz1, Steven Laujac2, Cedric Sirial3,4
1Physical Medicine and Rehabilitation Departement, Neuro-Locomotor Day Hospital Unit, Leon Berard Hospital, Hyères, France. b.bernuz@leonberard.com.
Sports medicine - open
|August 30, 2024
概括
耐克先进的鞋类技术 (AFT) 冲刺尖刺增强运动员的加速和速度. 个人的反应各不相同,突出了对冲刺运动鞋个性化研究的需要.
科学领域:
- 体育运动的生物力学
- 竞技表现分析运动员表现分析
- 运动工程 运动工程
背景情况:
- 先进的鞋类技术 (AFT) 已经为长距离跑步建立,但它对冲刺尖峰的影响仍未得到充分研究.
- 广泛采用AFT冲刺尖峰需要了解它们对性能和加速的影响.
- 在对AFT冲刺尖峰技术的临床或社会经济考虑之前,研究是必不可少的.
研究的目的:
- 为了比较耐克® AFT冲刺尖头 (NAS) 和标准尖头鞋 (SS) 之间的冲刺性能和加速参数.
- 通过使用NAS与SS.来研究冲刺表现的实体内和实体间的修改.
- 分析力-速度特征的变化和其他生物力学因素.
主要方法:
- 采用多个N-of-1设计,有21名精英短跑者在NAS和SS条件下进行30米短跑.
- 在单个会议内使用双盲,双对随机程序.
- 测量了30米冲刺时间,力-速度概况 (F0,V0,Vmax,Pmax,RFmax,DRF,FVP斜率),并控制了风和鞋子质量等混因素.
主要成果:
- 与SS相比,NAS显著提高了30米冲刺时间-0.02s (SMD=0.4,p=0.014) 与SS相比.
- 在最大速度 (Vmax:SMD=0.9,p<0.001) 和初始速度 (V0:SMD=0.7,p<0.001) 以及水平力比 (RFmax:SMD=0.5,p=0.043) 中观察到的主要改进.
- 力量生产保持不变;个人反应显示出显著的变化,一些运动员有所改善,一个运动员显示下降.
结论:
- 耐克AFT冲刺尖通过增加速度和水平力比来积极影响冲刺加速.
- 显著的个体间反应变异性表明单个案例实验设计对未来研究的有用性.
- 了解个体反应对于优化在运动训练和比赛中使用AFT冲刺尖峰至关重要.
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