Sowers J R, Rubenstein L Z, Stern N
J Gerontol. 1983 May;38(3):315-7. doi: 10.1093/geronj/38.3.315.
This study examines the effects of age on plasma norepinephrine (NE) responses to upright posture and isometric handgrip exercise in nonobese men. Increasing age was associated with increased basal levels of plasma NE as well as increased NE responses to upright posture. These results suggest that aging affects sympathetic system activity by mechanisms largely independent of the increasing adiposity generally associated with aging.
本研究探讨了年龄对非肥胖男性血浆去甲肾上腺素（NE）对直立姿势和等长握力运动反应的影响。年龄增长与血浆NE基础水平升高以及NE对直立姿势的反应增强有关。这些结果表明，衰老影响交感神经系统活动的机制在很大程度上独立于通常与衰老相关的肥胖增加。
