Effect of muscular exertion on circadian rhythms of adrenocortical activity in rats

Autor: Kolpakov, M. G., Kazin, É. M., Avdeev, G. G., Smykova, N. A., Baginskaya, N. V.
Zdroj: Bulletin of Experimental Biology and Medicine; August 1974, Vol. 78 Issue: 2 p931-933, 3p
Abstrakt: The effect of muscular exertion (swimming for 1 h) at different times of the 24-h period on circadian rhythms of the 17-hydroxycorticosteroid concentration in the adrenals and peripheral blood of rats was studied. The results were processed on a computer by the “Cosinor” program. Physical exertion in the period of maximal motor activity of the rats (the evening) led to desynchronization of the circadian rhythms of the 11-hydroxycorticosteroid concentration in the adrenals and peripheral blood. Exertion during the period of minimal motor activity (the morning) had no such action.
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