在古怪的步行运动中降低心血管和代谢反应:试点研究
Nicholas C Renwick1, Stuart Egginton1, Carrie Ferguson1,2
1School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds, UK.
Physiological reports
|October 6, 2024
概括
异常步行需要比同心步行更大的功率来达到相同的氧气吸收 (V ̇O2),表明更高的运动强度. 这一发现突出了异常和集中运动模式之间的心血管和代谢反应的差异.
科学领域:
- 运动生理学 运动生理学
- 心血管生理学心血管生理学
- 代谢生理学 代谢生理学
背景情况:
- 同心和偏心的肌肉收缩引起不同的生理反应.
- 了解这些差异对于优化炼方案和解释炼强度至关重要.
研究的目的:
- 为了比较同等功率和氧气吸收的集中式和偏心式踏步之间的心血管和代谢反应.
- 为了确定异常步骤的相对运动强度.
主要方法:
- 8名参与者完成了最大的同心和偏心坡道测试.
- 进行了三次随机的15分钟恒定功率测试:在90%的乳酸值 (LT) 时集中,在等效功率时偏心,在等效氧吸收时偏心 (V̇O2).
- 测量了心血管 (心率,血压) 和代谢 (V̇O2) 反应.
主要成果:
- 在等效功率下,古怪的步骤显示显著降低了VO,心率 (HR) 和平均动脉血压.
- 为了与V̇O2相匹配,与同心相比,离心步骤需要显著更高的功率输出.
- 在匹配V̇O2的奇特步骤中,V̇O2和HR继续增加,超过预测的稳定状态水平.
结论:
- 异常步行在代谢方面比同心步行在同等功率输出方面要求更少.
- 在异常步进过程中,需要更高的功率输出,以达到与同心步进相同的代谢需求 (V ̇O 2).
- 异常步进,即使在同心LT以下,也可能代表较高的相对运动强度,这是由于V·O和HR的持续增加.
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