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调节收缩对下半身爆炸力后静态拉伸的影响
Ming Li1, Youngsuk Kim2, Weishuai Guo2
1Physical Education, Yantai University, Yantai, Shandong, China.
International journal of sports medicine
|June 24, 2024
概括
静态拉伸 (StS) 对下肢的爆炸性产生负面影响,特别是在深厚的膝盖角度. 将StS与条件收缩 (SC) 结合起来可以减轻这种效应,保持力量发展速度 (RFD).
科学领域:
- 运动科学 运动科学 运动科学
- 生物力学 生物力学
- 运动生理学 运动生理学
背景情况:
- 运动前的伸展方案会影响神经肌肉的表现.
- 静态拉伸 (StS) 对爆炸物运动的影响仍在争论中.
- 了解最佳的运动前策略对于运动表现至关重要.
研究的目的:
- 研究静态拉伸 (StS) 与静态拉伸与条件收缩 (SC) 对神经肌肉反应和力量发展速度 (RFD) 的影响.
- 在跳 (SJs) 期间,分析这些影响在不同的初始膝关节关节角度 (60°,90°,120°) 中.
主要方法:
- 12名参与者接受了三项随机试验:对照试验,StS试验和SC试验.
- 在SJ期间,神经肌肉反应和RFD在不同的膝盖角度进行测量.
- 数据收集涉及3D运动捕捉,EMG和力平台.
主要成果:
- 无论是StS还是SC都没有显著改变肌肉EMG振幅.
- 与SC和对照相比,StS在早期和峰值力阶段在120°初始膝盖角度显著降低了RFD.
- 在任何测试的膝盖角度上,SC并没有对RFD产生负面影响.
结论:
- 静态拉伸本身可能会损害下肢的爆炸性,特别是在更深的膝盖曲角度 (120°).
- 将静态拉伸与条件收缩 (跳跃跳跃) 结合起来,可以防止这种性能下降.
- 运动员应该考虑避免StS或在需要从深坐位置获得高初始功率输出的活动之前加入调节收缩.
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