[Diurnal and seasonal rhythms of cerebral cortex activity during exercise]

The influence of the seasonal morning and evening exercises upon circadian rhythms of adrenocortical activity and some morphological and physiological data were studied. The exercise are seemed to synchronize circadian rhythms and adrenocortical activity. Moreover, it was shown that the exercise effect on circadian rhythms and adrenocortical activity depends both on the animals' day and night functional state and on the seasonal condition.