技术不对称性对500米速滑表现的影响
Zimeng Liu1, Meilin Ding2, Masen Zhang3
1School of Sport Science, Beijing Sport University, Beijing 100084, China.
Bioengineering (Basel, Switzerland)
|September 27, 2024
概括
精英速度滑冰运动员在直径滑冰中表现出显著的技术不对称性,但这种不对称性似乎不会影响整体表现. 分析揭示了联合角度和质量转移中心的双边差异.
科学领域:
- 生物力学 生物力学
- 运动科学 运动科学 运动科学
- 人类运动分析 人类运动分析
背景情况:
- 技术不对称性在体育运动中很常见.
- 了解它对滑冰运动的影响对于性能优化至关重要.
研究的目的:
- 研究双边技术不对称性对直径速滑表现的影响.
- 量化关节角度的不对称性,质量中心移位和时间参数.
主要方法:
- 在500米直径滑冰比赛中对20名精英滑冰运动员的分析.
- 测量联合角度,质量中心 (COM) 转移和相位特定速度.
- 计算不对称指数 (ASI) 和与绩效指标的相关性.
主要成果:
- 在膝盖,推开,干部和部角度观察到显著的双边不对称性 (p < 0.05).
- 男人滑冰运动员表现出更大的右推卸速度和更长的左滑翔时间.
- 在整个滑冰周期中发现了显著的COM转移不对称性 (p < 0.001).
- 不对称指数和整体表现之间没有发现显著的相关性 (p ≥0.067).
结论:
- 精英速度滑冰运动员在直道滑冰中表现出明显的双边技术不对称性.
- 这些观察到的不对称性与整体表现没有显著的相关性或负面影响.
相关概念视频
01:04Social Facilitation
31.9K
Not all intergroup interactions lead to negative outcomes. Sometimes, being in a group situation can improve performance. Social facilitation occurs when an individual performs better when an audience is watching than when the individual performs the behavior alone. This typically occurs when people are performing a task for which they are skilled.
31.9K
01:10Energy Diagrams - II
4.6K
Energy diagrams are important to understand the dynamics of a system. The topology of an energy diagram helps illustrate the equilibrium points of the system.
The point in the energy diagram at which the system’s potential energy is the lowest is known as the local minima. The system tends to stay in this position indefinitely unless acted upon by a net force. The slope of the potential energy diagram at the local minima is zero, indicating that zero net force is acting on the system. The...
The point in the energy diagram at which the system’s potential energy is the lowest is known as the local minima. The system tends to stay in this position indefinitely unless acted upon by a net force. The slope of the potential energy diagram at the local minima is zero, indicating that zero net force is acting on the system. The...
4.6K