使用体重支的步骤频率和肌肉活动的变化会影响人类对侧鼻走路的呼吸系统反应
Mako Fujita1, Kiyotaka Kamibayashi1, Masahiro Horiuchi2
1Faculty of Health and Sports Science, Doshisha University, 1-3 Tatara Miyakodani, Kyotanabe, Kyoto, 610-0394, Japan.
Scientific reports
|September 19, 2023
概括
形行走期间体重支的减少增加了通风幅度,这与较大的前肌肉活动有关. 这表明,当体重减少时,肌肉活动驱动呼吸反应.
科学领域:
- 运动生理学 运动生理学
- 生物力学 生物力学
- 呼吸系统生理学 呼吸系统生理学
背景情况:
- 了解运动肌肉活动和呼吸控制之间的相互作用对于运动科学至关重要.
- 体重支 (BWS) 是一种工具,用于研究运动期间的神经肌肉和生理反应.
- 侧腔走路提供了一种可控的方法来研究动态生理反应.
研究的目的:
- 为了研究下肢肌肉活动和呼吸响应之间的关系,在形行走与不同程度的体重支.
- 为了确定体重减轻如何影响通风和肌肉活动的幅度和阶段.
- 为了探索前肌活动和在体重变化条件下通风之间的关联.
主要方法:
- 15名健康的参与者在0%,30%和50%的体重支持下在跑步机上行走.
- 步行速度在不同频率下以正弦方向 (3-6公里/小时) 变化.
- 呼吸对呼吸通风,二氧化碳输出和前肌肉活动 (电肌图) 被测量;用于侧变异分析,使用富里埃分析.
主要成果:
- 透气幅度比随着更高的体重支持而增加.
- 体重减轻的条件显示出更的通风-CO2输出关系和更高的通风/CO2输出值.
- 前肌活动幅度比与通风幅度比显著正相关 (p < 0.001).
结论:
- 在体重支下增加前肌肉活动可能是突走路期间增强通风的主要驱动因素.
- 这些发现凸显了呼吸系统对机械负荷变化和运动过程中肌肉激活模式的敏感性.
- 体重支是测试动态活动期间呼吸的神经机械控制的有效方法.
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