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老年人的身体活动和心率变化:心血管健康研究

Luisa Soares-Miranda¹, Jacob Sattelmair², Paulo Chaves²

¹From the Department of Epidemiology, Harvard School of Public Health, Boston, MA (L.S.-M., J.S., D.M.); Research Centre in Physical Activity, Health and Leisure, Faculty of Sport, University of Porto, Portugal (L.S.-M.); Benjamin Leon Center for Geriatric Research and Education and Department of Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL (P.C.); Department of Epidemiology, University of Washington, Seattle, WA (G.E.D., D.S.S.); Department of Medicine, Cardiovascular Health Research Unit, University of Washington, Seattle, WA (D.S.S.); Heart Rate Variability Laboratory, Cardiovascular Division, Washington University School of Medicine, St Louis, MO (P.K.S.); and Division of Cardiovascular Medicine and Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, and Department of Nutrition, Harvard School of Public Health, Boston, MA (D.M.). soaresmiranda@fade.up.pt.

|May 7, 2014

概括

在老年人中,定期的体力活动,包括步行,与更好的心率可变性 (HRV) 和自主功能有关,可能降低心脏风险.

科学领域:

老年学是指老年学的学科.
心脏病学心脏病学
运动生理学运动生理学

背景情况:

衰老与心脏死亡率增加和电生理学功能障碍有关.
心率变化 (HRV) 反映了自主功能,并与心脏风险有关.
包括非线性指数在内的老年人体育活动和HRV之间的前性关系尚未得到充分确立.

研究的目的:

调查老年人习惯性体力活动和各种HRV措施之间的潜在关联.
为了确定是否增加的总休活动和步行水平与改善的时间域,频域和非线性HRV指数有关.

主要方法:

从心血管健康研究中对985名美国老年人的纵向研究.
在5年内对体力活动和24小时霍尔特HRV进行了连续测量.
应用多变量调整来分析关联.

主要成果:

较大的总休时间活动,步行距离和步行速度被前性地与更有利的HRV指数联系在一起.
具体来说,活动增加与正常至正常间隔的标准偏差更高以及超低频功率相关.
较高的步行速度与较少不规律的鼻模式有关,由较高的碎形缩放指数和较低的庞卡雷比率表明.

结论:

习惯性体力活动,包括步行,与老年人的自主功能改善有前性关联.
这些发现表明更正常的昼夜波动和不那么不规律的鼻发射.
身体活动可能有助于降低晚年心血管死亡率.

关键词:

电力生理学电力生理学流行病学流行病学运动就是炼身体.心率的心跳是如何发生的.运动活动运动活动

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