一项横截面研究,比较异动力学动力仪的被动和偏心模式,以评估训练有素运动员的偏心扭矩:方法考虑
Anne Delextrat1, Andreu Sastre-Munar2, Mark de Ste Croix3
1Department of Sport and Health Sciences and Social Work, Oxford Brookes University, Oxford, UK.
European journal of sport science
|January 26, 2025
概括
与异心模式相比,异动力学动力仪的被动模式可以更好地评估膝关节延伸附近的腿筋异心强度 (PTHecc) 的峰值. 然而,异常模式对于评估扭矩发展速度 (RTD) 可能更优越.
科学领域:
- 生物力学 生物力学
- 运动科学 运动科学 运动科学
- 运动生理学 运动生理学
背景情况:
- 在使用异常模式来测量峰值腿筋异常强度 (PTHecc) 时存在技术限制.
- 在预测运动表现或受伤风险因素方面,PTHecc的有效性有限.
- 需要比较不同的异动力学模式来评估腿筋强度.
研究的目的:
- 为了比较峰值腿筋异常强度 (PTHecc) 和异常和被动模式之间的其他异动力学变量.
- 为了评估异动力学模式对腿筋扭矩测量的影响,在各种膝盖角度和速度.
主要方法:
- 20名男子曲棍球运动员在60°·s-1和180°·s-1之间进行了最大的异常腿筋收缩,使用异常和被动模式在异动力学动力计上.
- 测量包括峰值扭矩 (PTHecc),峰值扭矩角度 (APT),角度特定扭矩和扭矩发展速度 (RTD).
主要成果:
- 与异常模式相比,被动模式仅在非主导腿部产生了显著更大的PTHecc.
- 被动模式导致APT,RTD和膝盖曲附近的角度特定扭矩显著减少.
- 被动模式显示在膝盖延伸 (10°-40°) 附近的角度特定扭矩显著增加.
结论:
- 虽然可以使用异心和同心模式来比较异动力学数据,但被动模式更好地用于评估峰值扭矩或膝关节附近的扭矩.
- 离心模式可能更适合评估变量,例如运动初始阶段的扭矩发展速度 (RTD).
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