一次高脂肪的西方餐调节血管对休息和运动期间同情激活的反应:人类随机对照试验
André L Teixeira1, Ayesha Gangat1,2, Philip J Millar1
1Human Cardiovascular Physiology Laboratory, Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada.
概括
富含脂肪的食会通过减少功能性同理解来损害运动期间的血管功能. 在西方饮食后观察到的这种效应突显了对心血管健康的潜在负面影响.
科学领域:
- 心血管生理学心血管生理学
- 运动生理学 运动生理学
- 营养科学 营养科学
背景情况:
- 一个高脂肪的西方餐可以暂时减少内皮依赖的血管扩张.
- 这种食物在运动期间对交感血管收缩的影响,称为功能性交感解,尚不清楚.
研究的目的:
- 为了调查高脂肪的西方食物是否会在健康的年轻成年人中影响运动期间的功能性交友解体.
- 为了确定高脂肪饮食对静止和运动期间对同情激活的血管反应的影响.
主要方法:
- 使用多普勒超声波和光电脉扫描测量了前臂血流和动脉压.
- 低体负压 (LBNP) 在休息状态和低强度和中等强度的握手运动中被施加.
- 实验是在食前,以及高脂或低脂饮食后1,2,3小时进行的.
主要成果:
- 富含脂肪的食物减弱了在休息时的交感血管收缩,并在运动时减弱了功能性交感解体.
- 在高脂肪饮食后,交感解的程度显著降低.
- 一种同热量低脂肪的食没有产生这些效应.
结论:
- 一次高脂肪的西方饮食对健康年轻人的交感血管收缩和功能交感解质产生负面调节.
- 这些发现表明,西方饮食消费的潜在有害血管效应.
- 饮食中的脂肪含量显著影响运动期间的血管反应.
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