Age dynamics of the body's functional reserves

Abstract

The study compared the results of the study of the body’s functional reserve obtained by different methodological approaches (limit and dosed physical activity) and studied the possibility of using an original test for their assessment. For this purpose, a bicycle ergometric load with a change in power in a closed cycle (with reverse) was used, according to which about 30 criteria were obtained. The subjects were of different age, gender, physical fitness level and sports specialization (n= 354). Under the conditions of maximum and dosed physical activity, a number of indicators of physical performance, the level of functioning of the cardiovascular, respiratory, and central nervous systems, the state of the mechanisms of regulation and energy tension (activation) of the body were determined. The age dynamics of the criteria of functional reserves in males aged 7 to 22 years and their variability were determined. The use of statistical analysis made it possible to determine the normative values of physical performance indicators, heart rate, state of regulatory mechanisms and the degree of activation (stress) of the body under conditions of closed-cycle physical activity. The results of the study demonstrate the possibility of predicting the functional reserves of children and youth under the conditions of using dosed loads with reverse, in which the degree of reactions of the executive and regulatory systems correspond to the optimal level, and their graphical record takes the form of a hysteresis loop with four informative sections. The dependence between individual elements of the loop and functional capabilities (area, cross-section, angle of inclination, etc.) is established.