中心血压和外周增强指数在急性亚最大臂对腿运动后
1Department of Exercise Science, David B. Falk College of Sport and Human Dynamics, Syracuse University, Syracuse, NY, USA.
European journal of applied physiology
|August 12, 2024
概括
与腿部炼相比,手臂炼急剧增加了外周增强指数,并降低了中央透气血压. 这些发现表明,手臂炼可能不会像腿部炼那样提供同样的心血管益处.
科学领域:
- 心血管生理学心血管生理学
- 运动科学 运动科学
- 康复医学 康复医学 康复医学
背景情况:
- 众所周知,像跑步和骑自行车这样的有氧运动通过改善中心血压和血管功能来降低心血管疾病 (CVD) 风险.
- 手臂人体力测量是康复中常见的练习,但它对中央血液动力学和血管功能的影响尚不清楚.
研究的目的:
- 为了比较手臂与腿部运动对中央血压和血管功能的急性影响.
主要方法:
- 21名健康的成年人 (11名女性,年龄21±3) 接受了两次实验室检查.
- 参与者完成了20分钟的中度强度的手臂或腿部自行车运动.
- 运动前和运动后测量了中央缩血压 (cSBP),中央透气血压 (cDBP) 和外周增强指数 (pAIx).
主要成果:
- 对于pAIx和cDBP,观察到运动类型和时间之间的显著相互作用.
- 手臂运动后的pAIx增加,但在腿部运动后降低.
- 手臂运动后cDBP下降,但在腿部运动后增加;在两种运动类型后cSBP同样增加.
结论:
- 手臂运动导致pAIx的增加和cDBP的减少,与腿部运动不同.
- 增加的pAIx可能会增加左心室的工作负载,而减少的cDBP可能会降低冠状动脉 perfusion 压力.
- 这些结果表明,单次手臂炼可能不会像腿部炼那样有效地提高中心血液动力负荷.
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