有氧训练减轻了黑人和白人成年人之间的左心室-血管合和浪费压力努力的差异
João L Marôco1,2, Abbi D Lane3, Sushant M Ranadive4
1Integrative Human Physiology Laboratory, Manning College of Nursing & Health Sciences University of Massachusetts Boston Boston MA USA.
Journal of the American Heart Association
|November 4, 2024
概括
在黑人和白人成年人中,有氧训练不同地改善了心血管健康. 黑人成年人显示减少了浪费压力,而白人成年人改善了心室血管合,可能减少了心脏病的种族差异.
科学领域:
- 心血管生理学心血管生理学
- 运动科学 运动科学
- 种族健康差异的差异
背景情况:
- 与白人成年人相比,黑人成年人面临左心室缩和心力衰竭的风险更高.
- 这种差异可能源于心室血管合的早期变化 (动脉弹性[Ea]与心室弹性[Ees]的比率) 和浪费的压力力 (Ew).
- 众所周知,有氧训练可以保持Ea/Ees比率并减轻Ew,但它对黑人成年人的影响仍未得到充分研究.
研究的目的:
- 为了研究有氧训练对心室血管合和黑人和白人成年人浪费压力努力的影响.
- 测试假设,与白人成年人相比,黑人成年人会在Ea/Ees和Ew中表现出更大的训练诱导的改善.
主要方法:
- 54名年轻成年人 (24名黑人,30名白人) 血压正常,接受了为期8周的有氧训练计划.
- 室腔-血管合 (Ea/Ees) 用心声学估计,并缩放到身体表面积.
- 浪费的压力力 (Ew) 由脉冲轮分析计算出来.
主要成果:
- 与白人成年人相比,黑人成年人最初呈现出较低的Ea/Ees和较高的Ew.
- 这两组在训练后显示动脉弹性 (Ea) 的降低相似.
- 白人成年人经历了腹腔弹性 (Ees) 的增加,导致Ea/Ees的减少,而黑人成年人则显示了浪费压力 (Ew) 的减少.
结论:
- 有氧训练在黑人和白人年轻人之间对Ea/Ees和Ew产生了不同的影响.
- 这些不同的反应表明了减少心血管健康方面的种族差异的潜在途径.
- 在更大的种群中进一步验证是有必要的,以确认这些发现.
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