中年运动员心房动:对左心房,心室和运动表现的影响
Emily Vecchiarelli1, Robert F Bentley1, Kim A Connelly2,3,4
1Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, Ontario, Canada.
PloS one
|March 13, 2024
概括
中年运动员患有动性心房动 (AF) 在运动期间表现出左心房 (LA) 功能和中风体积的减少,这表明不良的心脏重塑可能会损害表现.
科学领域:
- 心脏病学 心脏病学
- 运动医学 运动医学
- 运动生理学 运动生理学
背景情况:
- 高体积耐力训练与中年运动员中心动症 (AF) 风险增加有关.
- 关于这些运动员的心血管状况和AF对心房功能和在鼻节律期间的运动能力的影响,数据有限.
研究的目的:
- 描述中年耐力运动员中静止状态和运动期间的左心房 (LA) 阶段功能.
- 为了确定AF对该人群的运动表现的影响.
主要方法:
- 15名经受耐力训练的男性没有AF (EA) 和14名患有性AF (EA-AF),年龄在55-56岁之间,在分级循环-人体力测试期间接受了心声扫描.
- 测量包括静止LA体积和心房电机延迟 (AEMD) 在轻度和中度强度.
主要成果:
- 休息LA最大体积和AEMD在EA和EA-AF组之间是相似的.
- 在中度运动期间,EA-AF表现出LA管道和助推器体积的减少,与EA相比,左心室 (LV) 卒中体积的减少.
- 具体来说,EA-AF显示了减少的LA导管体积 (30vs. 40毫升/米2) 和LA助推体积 (17vs. 21毫升/米2),以及较低的LV中风体积 (100vs. 117毫升).
结论:
- 运动测试揭示了耐力运动员患有AF的不良功能性心脏重塑,可能会损害运动表现.
- 在运动期间减少LA管道,LA助推器和LV中风体积可能有助于临床管理和区分病理与生理心脏重塑.
- 需要进一步的研究来确认这些功能性改变是否是AF的直接后果.
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