The effects of submaximal and maximal physical exercise on the formation, fixation and subsequent reproduction of temporary relations were compared before or immediately after training. Physical exercise before training, that impairs the formation of temporary relations, led to relatively moderate disorders in their fixation and reproduction. During physical exercise immediately after training, disorders of fixation and subsequent reproduction of temporary relations are more pronounced. It is suggested that disorders of the formation and fixation of the temporary relations caused by physical exercise are partially determined by changes in the brain content of biogenic amines.