Scientific journal
Scientific Review. Biological science
ISSN 2500-3399
ПИ №ФС77-57454

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PECULIARITIES OF REGULATION OF CARDIAC FUNCTION AND FREE RADICAL PROCESSES IN THE SALIVARY FLUID OF YOUNGER SCHOOLBOYS IN DYNAMIC YEAR

Kosenko J.V. 1 Mendzheritskiy A.M. 1
1 Southern federal university
The analysis of heart rate variability in different functional states, changes of free radical oxidation and the presence of “stress markers” in the salivary fluid of 10 years old schoolchilds in the dynamics of the school year has been conducted. At the end of the school year in schoolchilds at rest and after exercise showed a significant increase in the percentage contribution of VLF-oscillations, to a greater extent at the expense of reducing the percentage of the contribution of high-frequency waves in the total power spectrum of heart rate variability. In the salivary fluid at the end of the academic year at the school identified biochemical indications of stress characteristics of organism (an increase in cortisol, glucose, а-amylase activity) and reduce some of antioxidant defense system. It is shown that the biochemical characteristics of the organism stress of schoolchilds at the end of the school year are reflected in the balance of vegetative regulation of heart activity.