[Formation, fixation and reproduction of temporary connections during adaptation to physical loading]

It is shown that long-term adaptation to physical loads of various intensity and duration has an influence on formation, fixation and reproduction of temporary connections in rats. Periodicity of conditioned activity has been found in the process of protracted training. After twenty days of adaptation to submaximal physical loads, the processes of fixation and reproduction of temporary connections improve whereas with elongation of adaptation the conditioned activity somewhat deteriorates. In conditions of long-term training by maximal physical loads, both elaboration and preservation of conditional reflexes in all adaptation terms is affected.