在重复的冲刺循环中应用的节奏对肌肉特征的影响
Sebastian Klich1, Kamil Michalik2, Bogdan Pietraszewski3
1Department of Paralympic Sport, Wrocław University of Health and Sport Sciences, 51-612, Wrocław, Poland. sebastian.klich@awf.wroc.pl.
European journal of applied physiology
|January 4, 2024
概括
与较低的节奏相比,在最佳节奏下重复的冲刺循环会导致四头肌肌单位在四头四头肌发生更大的变化. 这突出了节奏对强度运动期间肌肉适应的影响.
科学领域:
- 运动生理学 运动生理学
- 体育 生物力学 运动 生物力学
- 肌肉生理学 肌肉生理学
背景情况:
- 了解肌单位适应对于优化运动表现至关重要.
- 冲刺循环协议被广泛用于评估生理和机械反应.
- 节奏显著影响了对神经肌肉系统的生物力学需求.
研究的目的:
- 为了研究在最佳和70%的最佳节奏重复冲刺骑行对四头肌肌单元属性的影响.
- 为了比较不同循环节奏之间的生理反应和机械性能.
- 分析肌肉厚度的变化,带的长度,pennation角度和刚度.
主要方法:
- 20名休骑自行车者在随机顺序中以最佳和70%的最佳节奏完成了重复的冲刺骑自行车协议.
- 测量了大腿直骨,大腿侧骨和大腿中间骨的肌单位属性 (厚度,带长度,笔纹角,度).
- 测量是在基线,运动后立即,以及运动后1小时使用超声波成像进行的.
主要成果:
- 在两种节奏中,运动后立即测量的所有四头肌 (RF,VL,VM) 的肌肉厚度和角增加.
- 带的长度在直骨 femoris 减少,而硬度在直骨 femoris 和横骨 vastus 减少.
- 按照最佳节奏协议,肌肉特征的变化更为明显.
结论:
- 与较低的节奏相比,在最佳节奏下重复冲刺循环会诱导较大的肌单元变化.
- 在最佳节奏下对肌单元的较高负荷可能会推动这些更显著的适应.
- 研究结果为骑自行车者提供了关于运动强度和节奏特定训练策略的见解.
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