不同时间的下腿热水浸泡的血液动力学和血管效应
Kyla D Coates1, Stephen P Wright1, Liam C Stewart1
1Centre for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British Columbia, Kelowna, BC, Canada.
概括
使用被动热疗法 (PHT) 进行45分钟的足浴,通过增强血液流动和血管功能,显著改善心血管健康. 这种持续时间为老年人血压和血液动力学调整提供了最佳的益处.
科学领域:
- 心血管生理学心血管生理学
- 治疗方式 治疗方式
- 老年学是一门学科.
背景情况:
- 被动热疗 (PHT) 显示出改善心血管健康的潜力.
- 局部PHT的最佳持续时间,如足浴,对于血管适应还没有很好地确立.
- 局部PHT可能为心血管益处提供一种可访问的方法.
研究的目的:
- 为了确定较长时间的下腿被动热疗法 (PHT) 是否更好地改善血液动力学和血管功能.
- 为了比较30分钟,45分钟和60分钟热水足浴对血管和血压参数的影响.
- 为了确定足浴PHT对心血管有益的最佳持续时间.
主要方法:
- 14名老年人被浸泡在热水中 (42°C) 30分钟,45分钟和60分钟,再加上60分钟的热中性假装条件.
- 测量包括表面大腿动脉血流量,流量介导扩张 (FMD) 和24小时门诊血压.
- 在浸泡后的60分钟内评估了血管恢复.
主要成果:
- 与假药相比,所有PHT持续时间都显著增加了大腿动脉的血流量.
- 在45分钟的PHT中,与恢复时间的假药相比,证明了腿部持续的血液流动和优越的流动介导扩张 (FMD).
- 45分钟和60分钟的PHT都显著降低了24小时的平均动脉压,与假药相比.
结论:
- 45分钟的脚提供了与60分钟浸泡相比的血液动力学益处.
- 45分钟的持续时间产生了血管功能最显著的急性改善.
- 建议45分钟的足浴作为改善血管健康和血压的首选PHT剂量.
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