在耐力训练和未训练的个体中,身体姿势对休息和运动期间的肺扩散能力的影响
Andrew R Brotto1,2, Stephanie de Waal1, Andrew W D'Souza1
1Division of Pulmonary Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada.
Journal of applied physiology (Bethesda, Md. : 1985)
|December 16, 2024
概括
耐力训练在卧卧姿势中提高了对一氧化碳 (DLCO) 的休息扩散能力. 训练有素的运动员在姿势变化时显示出更大的DLCO招募,但在最大运动时可能会出现平原.
科学领域:
- 生理学 生理学 生理学
- 肺部医学 肺部医学
- 运动科学 运动科学
背景情况:
- 耐力训练的运动员对一氧化碳 (DLCO) 的扩散能力高于未经训练的个人.
- 这种差异背后的机制以及姿势对DLCO的影响尚未完全理解.
- 卧卧的位置将血液转移到中心,允许独立于代谢率的DLCO评估.
研究的目的:
- 调查姿势对休息和运动DLCO对耐力训练和未训练的个体的影响.
- 为了确定耐力训练是否增强了DLCO对静止状态姿势变化的反应.
- 为了检查在训练和未训练的个体中,卧卧姿势是否会增加运动期间的DLCO.
主要方法:
- 14名耐力训练和14名未经训练的个人进行了DLCO机动.
- 测量是在休息状态和运动期间进行的,无论是直立的还是仰卧的.
- V̇o2peak被用来描述培训状态.
主要成果:
- 在休息状态下,DLCO在训练有素的个体中从直立到仰卧显著增加,但在未经训练的个体中并非如此.
- 在炼期间,对任何一组的DLCO都没有显著的影响.
- 肺毛细血管血量 (VC) 随着卧卧运动而增加,在训练过的人群中观察到DLCO和VC的平原在最大运动附近.
结论:
- 耐力训练的个体表现出更大的DLCO招募与静止时的姿势变化,这表明增强的肺微血管伸缩能力.
- 卧卧姿势在运动期间增加了肺毛细血管血液体积,但不会增加DLCO.
- 在训练有素的个体中,在接近最大的运动期间DLCO和VC的平原表明肺微血管系统的潜在形态极限.
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