Sloan Richard P, Shapiro Peter A, DeMeersman Ronald E, Bagiella Emilia, Brondolo Elizabeth N, McKinley Paula S, Slavov Iordan, Fang Yixin, Myers Michael M
Division of Behavioral Medicine, Department of Psychiatry, Columbia University, 1150 St Nicholas Ave, Suite 121, New York, NY 10032, USA.
Am J Public Health. 2009 May;99(5):921-8. doi: 10.2105/AJPH.2007.133165. Epub 2009 Mar 19.
We tested the effect of aerobic exercise on autonomic regulation of the heart in healthy young adults.
Healthy, sedentary young adults (n = 149; age = 30.4 +/- 7.53 years) were randomized to receive 12 weeks of either aerobic conditioning or strength training. Primary outcomes were heart rate and RR interval variability (RRV) measured before and after training and after 4 weeks of sedentary deconditioning. RRV, a noninvasive index of cardiac autonomic regulation, reflects variability in the intervals between consecutive R waves of the electrocardiogram.
Aerobic conditioning but not strength training led to a significant increase in aerobic capacity (3.11 mL/kg/min), a decrease in heart rate (-3.49 beats per minute), and an increase in high-frequency RRV (0.25 natural log msec2), each of which returned to pretraining levels after deconditioning. Significant 3-way interactions, however, revealed autonomic effects only in men.
In sedentary, healthy young adults, aerobic conditioning but not strength training enhances autonomic control of the heart, but post hoc analyses suggested that gender plays a significant role in this exercise-related cardioprotection.
我们测试了有氧运动对健康年轻成年人心脏自主调节的影响。
将健康的久坐不动的年轻成年人（n = 149；年龄 = 30.4 ± 7.53岁）随机分为两组，分别接受为期12周的有氧训练或力量训练。主要结局指标为训练前后以及4周久坐失健后测量的心率和RR间期变异性（RRV）。RRV是心脏自主调节的无创指标，反映心电图连续R波间期的变异性。
有氧训练而非力量训练导致有氧能力显著增加（3.11 mL/kg/min），心率降低（每分钟-3.49次心跳），高频RRV增加（0.25自然对数毫秒²），失健后这些指标均恢复到训练前水平。然而，显著的三因素交互作用表明自主效应仅在男性中存在。
在久坐不动的健康年轻成年人中，有氧训练而非力量训练可增强心脏的自主控制，但事后分析表明性别在这种与运动相关的心脏保护中起重要作用。
