健康成年人的鼓舞性肌肉训练:负载,感知和氧气消耗之间的关系
Timothy O Jenkins1,2, Dan Stieper Karbing3, Stephen Edward Rees3
1Rehabilitation and Therapies Department, Royal Brompton and Harefield Hospitals, Heart, Lung and Critical Care Group, Guy's and St Thomas' NHS Foundation Trust, London, UK.
Clinical physiology and functional imaging
|January 21, 2026
概括
鼓舞性肌肉训练 (IMT) 增加了氧气消耗和感知到更高负荷的困难. 了解这些反应有助于优化IMT处方,以获得更好的患者结果和遵守.
科学领域:
- 运动生理学 运动生理学
- 呼吸系统医学 呼吸系统医学
- 康复科学 康复科学 康复科学
背景情况:
- 启发性肌肉训练 (IMT) 增强呼吸肌肉的力量和耐力.
- IMT在各种人群中应用,以获得体育和临床的好处.
- 最佳的IMT协议和患者的遵守仍然是需要研究的领域.
研究的目的:
- 在IMT期间量化氧气消耗 (VO2).
- 评估在各种IMT强度下感知到的呼吸困难和不愉快感.
- 研究IMT负载与生理/感知反应之间的关系.
主要方法:
- 30名参与者在4cmH2O和30%,50%和80%的最大吸入力 (PImax) 时接受了IMT.
- 通过间接热量计来测量VO2.
- 呼吸困难 (VAS-D) 和不愉快 (VAS-U) 被使用视觉模拟尺度进行评分.
主要成果:
- IMT显示VO2的负载依赖性增加 (p < 0.001).
- 每增加1%的IMT负载相对于PImax,VO2增加0.013毫升/千克/分钟.
- 感知到的困难和不愉快感随着IMT负载的增加而升级,受PImax的影响.
结论:
- IMT会引起VO2和主观呼吸力度的剂量依赖的增加.
- 较高的IMT负荷显著增加呼吸困难和不愉快感.
- 这些发现通过将运动反应和患者报告的结果联系起来,为IMT的处方提供信息.
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