Functional state and stress periods of cardiovascular and sympathetic-adrenal systems in students throughout the academic year

The dynamics of a functional state of cardiovascular and sympathetic — adrenal systems in students aged 17—19 years throughout the academic year in the first, second and third УДК 616.921.5-06-037 course of the Pedagogical Institute is studied. The adaptation process of students is shown to be accompanied by stress periods in the functional state of cardiovascular and sympathetic — adrenal systems. The response of the systems under study to the dosed physical load varies according to their functioning intensity. The character of correlative relations between hormonal and mediative links of sympathetic — adrenal system and statistical characteristics of the cardiac rhythm depends ’on the training period and may serve as a criterion of the functional stress of the student’s organism.