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区域四头骨架构对角度特异性快速力表达的影响

Dustin J Oranchuk^1,2,3, William G Hopkins², John B Cronin¹

¹Sports Performance Research Institute New Zealand, Health and Environmental Sciences, Auckland University of Technology, Auckland, New Zealand.

Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme

|June 30, 2023

概括

中直骨的厚度和近接的大侧带的长度最好预测膝盖的快速伸展力. 研究人员应该专注于这些措施,以有效地对肌肉性能进行解剖评估.

科学领域:

生物力学生物力学
人体生理学人体生理学
运动科学运动科学运动科学

背景情况:

了解肌肉机制对于优化运动表现和身体准备至关重要.
虽然四肢体解剖学对整体肌肉功能的影响是已知的,但其对快速力量产生的具体影响是不太了解的.

研究的目的:

为了研究四头骨 (大侧骨,大腿直骨,大中间骨) 的区域解剖贡献,以在同位式膝盖延伸过程中快速表达力.

主要方法:

在24名男性中,超声波用于测量四头肌的近端,中端和远端区域的肌肉厚度 (MT),角 (PA) 和带长度 (FL).
参与者在各个关节角度进行了最大的同度膝盖延伸,以评估力量发展速度 (RFD0-200ms).
使用线性回归模型将区域解剖测量与RFD0-200ms.相关联.

主要成果:

中直骨的MT (√adjR2 = 0.41-0.51) 和近接的横向巨的FL (√adjR2 = 0.42-0.48) 是RFD0-200ms最强的个体预测因素.
观察到RFD0-200ms和其他区域性措施之间存在小到中等的相关性,包括巨大的横向肌肉MT和FL,以及大腿直肠和巨大的中间肌肉MT.
与中区域和近接测量相比,远距离和近接测量提供了最小的额外预测价值.

结论:

中部区域的直骨肌肉厚度和近接的大侧带的长度是有效预测膝盖快速伸展力的关键解剖因素.
这些发现表明,有针对性的超声波测量可以有效地评估对爆炸强度的解剖学贡献.
一般小到中等的相关性表明,神经因素可能在快速的力量表达中起着重要作用,与解剖学决定因素一起.

关键词:

长度张力张力肌肉结构肌肉结构肌肉结构长腿直肠 (rectus femoris) 是一个长腿直肠.扭矩扭矩是指扭矩.这是一个巨大的中间体Vastus intermedius.这是一个巨大的横向 (Vastus lateralis).

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