Viru A, Tendzegolskis Z, Smirnova T
Department of Sports Physiology, Tartu University, Estonia, U.S.S.R.
Endocrinol Exp. 1990 Mar;24(1-2):63-8.
In 49 healthy subjects during 2 h exercise on bicycle ergometer four variants of changes of beta-endorphin level were observed: 1. an increase during first 30 min followed by a decreased below initial values; 2. biphasic increase (peak values at the 30th and 120th min); 3. increase only during the 2nd h of exercise; 4. decrease during the whole period of exercise. For trained subjects the most common was the biphasic increase, for untrained ones--the overall decrease.
在49名健康受试者进行2小时自行车测力计运动期间，观察到β-内啡肽水平变化的四种变体：1. 在最初30分钟内升高，随后降至初始值以下；2. 双相升高（在第30分钟和第120分钟达到峰值）；3. 仅在运动的第2小时升高；4. 在整个运动期间降低。对于训练有素的受试者，最常见的是双相升高，对于未训练的受试者，则是整体降低。
