Scarpace N T, Lowenthal D T
GRECC, Department of Veterans Affairs Medical Center, Gainesville, FL 32608-1197.
South Med J. 1994 May;87(5):S42-6.
Both aging and exercise are associated with alterations in regulation of catecholamines. With aging, elevated circulating catecholamines at rest and after stress may result in increased sympathetic nervous system activity. The ability of the catecholaminergic system of older subjects to respond and adapt to environmental challenges is altered during aging. One consequence of these changes may be the increased prevalence of hypertension with age. Exercise training reduces both systolic and diastolic blood pressure in young and elderly hypertensive subjects. The reduction in catecholamine synthesis after training may be linked to the beneficial effects of exercise in hypertensive individuals.
衰老和运动都与儿茶酚胺调节的改变有关。随着衰老，静息时和应激后循环儿茶酚胺升高可能导致交感神经系统活动增加。老年受试者的儿茶酚胺能系统在衰老过程中对环境挑战做出反应和适应的能力会发生改变。这些变化的一个后果可能是高血压患病率随年龄增加。运动训练可降低年轻和老年高血压受试者的收缩压和舒张压。训练后儿茶酚胺合成的减少可能与运动对高血压个体的有益作用有关。
