[Rat adrenal corticosteroid concentration during hypokinesia combined with measured physical exertion].

The paper presents data on the content of corticosteroids in adrenals of rats exposed to 46, 53- and 60-day hypokinesia as well as to 60-day hypokinesia combined with graded exercises. It was found that the content of corticosteroids in adrenals remained essentially unaltered after 46-day hypokinesia, decreased after 53-day hypokinesia and increased after 60-day hypokinesia as compared to the appropriate controls. The use of exercises demonstrated good reserve capabilities of the hypophyseal-adrenal system of rats after 60-day hypokinesia and revealed certain changes in regulatory mechanisms of the hypophysis--adrenal cortex system.