在大学舞蹈演员中,肢体对称指数使用修改后的恒星游览平衡测试和单脚跳跃
Kelley R Wiese1, Jatin P Ambegaonkar1, Jena Hansen-Honeycutt2
1Sports Medicine Assessment Research and Testing (SMART) Laboratory, George Mason University, Manassas, VA, USA.
概括
大学舞者在平衡和跳跃测试中表现出高腿对称性 (四肢对称性指数>90%),表明他们准备好恢复表演. 这表明使用未受伤的肢体作为创伤后恢复的基准.
科学领域:
- 运动医学 运动医学
- 舞蹈科学 舞蹈科学 舞蹈科学
- 生物力学 生物力学
背景情况:
- 舞蹈需要很高的体力和单方面运动,往往导致腿部主导和不对称.
- 用四肢对称指数 (LSI) 测量的腿部不对称性增加与运动员受伤风险更高相关.
- 关于腿部对称性的研究有限,特别是在大学舞蹈群体中.
研究的目的:
- 为了评估大学舞者用修改的恒星游览平衡测试 (mSEBT) 和单腿跳跃 (SLH) 测试来评估腿部对称性.
- 在特定的平衡和表演任务中确定大学舞者肢体对称指数 (LSI).
- 为受伤的舞者提供恢复表演决策的数据.
主要方法:
- 120名大学舞者 (105名女性,15名男性) 进行了mSEBT和SLH测试.
- 测试标准化为mSEBT的腿长 (%LL) 和SLH的身体高度 (%BH).
- 肢体对称指数 (LSI) 计算为 (下肢得分/上肢得分) × 100.
主要成果:
- mSEBT的平均LSI为99.1%±0.9%,表明高对称性.
- SLH的平均LSI为95.9%±3.5%,也表明高对称性.
- 舞者的LSI得分超过了健康,活跃的成年人的90%以上的门.
结论:
- 大学舞者在平衡和跳跃测试中表现出良好的腿对称性,与健康成年人相比.
- 反边肢体可以作为一个可靠的参考来决定伤害后的恢复.
- 将LSI整合到选中可以识别显著的不对称性,并指导舞者康复.
相关概念视频
01:21Rigid Body Equilibrium Problems - II
A rigid body is in static equilibrium when the net force and the net torque acting on the system are equal to zero.
Consider two children sitting on a seesaw, which has negligible mass. The first child has a mass (m1) of 26 kg and sits at point A, which is 1.6 meters (r1) from the pivot point B; the second child has a mass (m2) of 32 kg and sits at point C. How far from the pivot point B should the second child sit (r2) to balance the seesaw?
Consider two children sitting on a seesaw, which has negligible mass. The first child has a mass (m1) of 26 kg and sits at point A, which is 1.6 meters (r1) from the pivot point B; the second child has a mass (m2) of 32 kg and sits at point C. How far from the pivot point B should the second child sit (r2) to balance the seesaw?
00:59Center of Mass
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