游泳者在背部起步技术期间的有效行动
Karla de Jesus1,2, Kelly de Jesus1,2, Luís Mourão1,3
1Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal.
Sensors (Basel, Switzerland)
|September 28, 2023
概括
背游泳者通过模拟的结构动作在起跑过程中产生显著的力,约占总推进力的40%. 了解这些力机制有助于优化背部启动技术和训练.
科学领域:
- 运动科学 运动科学 运动科学
- 生物力学 生物力学
- 游泳表现表现 游泳表现表现
背景情况:
- 了解游泳开始时的外部力量对于优化推进至关重要.
- 之前的分析集中在一般启动力学上,缺乏对背部冲动力产生的具体见解.
研究的目的:
- 为了评估背部开始时的水平和垂直力.
- 为了区分结构和推进力组件在背部开始.
- 为教练和研究人员提供有效的背部启动策略的信息.
主要方法:
- 模拟的结构力量使用两个身体位置 (和延伸).
- 测量了10名竞争性背泳泳者在15米的最大开始时所施加的外部力.
- 从测量力中减去模拟的结构力来确定推进力.
主要成果:
- 模拟的结构力约占总启动推进力的40%.
- 推进水平力增加,而垂直力在起飞前的最后0.05秒减少.
- 观测到最优的起飞角度约为20度.
结论:
- 结构力量在背部启动推进中发挥着重要作用.
- 特定的机械策略可以提高背部启动的有效性.
- 这些发现可以提高抵抗训练与游泳表现的可转移性.
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