后腿衍生动力有助于保加利亚部伸展的阻力
Hiroshi Arakawa1,2, Hikaru Nakashima3, Xuanrui Li2
1Department of Physical Education, International Budo University, Chiba, Japan.
International journal of exercise science
|September 5, 2025
概括
保加利亚分 (BSS) 产生显著的后腿阻力 (MRL),这是部延伸的关键因素. 调整姿势宽度和干部倾斜可以优化这种负荷,用于部伸缩器训练.
科学领域:
- 生物力学
- 运动学
- 强度和健康状况
背景情况:
- 保加利亚分 (BSS) 是一种以部延伸为重点的单方面炼.
- 一个理论的后腿衍生时刻 (MRL) 与前延伸 (MHE) 已被提议,但未经实验验证.
- 了解影响MRL的因素对于优化部伸缩器训练的BSS至关重要.
研究的目的:
- 在BSS中经验验证后腿衍生时刻 (MRL) 的存在.
- 调查幅和干倾斜角度对MRL的影响.
- 确认MRL和头臂干段引力矩 (MHAT) 对部总延伸阻力的贡献.
主要方法:
- 九名训练有素的雄性进行体量BSS,其姿势宽度 (宽,窄) 和干倾斜 (额外,自然,缩小).
- 使用运动捕捉和力平台来量化MRL,MHAT和MHE.
- 分析的重点是MRL的数量及其对外部总耐药性的比例.
主要成果:
- 这种MRL对总抗性有显著的贡献,其范围在49-86Nm之间,取决于位的宽度.
- 占总耐药性的62%至98% (MHAT+MRL).
- 在狭窄的姿势中,MRL随着更直立的体位而增加.
结论:
- 这项研究提供了第一份关于MRL作为BSS实质性耐药成分的实验证据.
- 这些发现支持提出的机械模型,表明MRL和MHAT与MHE非常相符.
- 实践者可以操纵姿势和干姿势来调节MRL,增加部伸展器的负荷,减少前倾.
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