Results of a 100-Year Study of the Problem of Overtraining

The paper provides a historical review of the concepts of overtraining in sports since 1923 and summarizes the results of the study of the problem. The author’s concept of overtraining syndrome is considered from the perspective of the theory of stress and adaptation. The commonality of overtraining with the syndrome of relative energy deficiency in sports and disruption of adaptation of the circulatory apparatus is shown. Much attention in the article is paid to non-training stress, which under certain conditions can become the leading cause of overtraining syndrome.