Structural characteristics in the hierarchy of dynamics of R-R ECG intervals when executing various functional tests

In functional tests, the method of fractional trends studied changes in the structural characteristics of the levels of the dynamic hierarchy of the time series of the R-R intervals of the electrocardiogram. This method allows you to reveal the picture of the interaction between the levels of the dynamic hierarchy. It was revealed that in functional tests having the largest phase of the disturbance period, dynamic coupling between hierarchy levels decreases. The antagonism of the autonomic nervous system was manifested in the choice of those regulatory links that provide the greatest adaptation of the body in the conditions of the test. So, it was determined that in the orthoprobe the sympathetic division takes the greatest part, and in the recovery period after 20 squats - the parasympathetic division.