Indicators of heart rate variability in children from Surgut

Aim. The article deals with establishing the features of the cardiovascular system by using HRV indicators in first graders from Surgut. Materials and methods. We examined 252 first-graders from various educational institutions in Surgut. The features of autonomic heart rate regulation were studied by using time-domain and spectral analysis. We also conducted a comparative analysis of indicators depending on gender. Results. We did not reveal any significant differences in heart rate variability parameters of boys and girls from Surgut. These data were compared with the similar data of first-graders from Moscow obtained in 2016. Conclusion. First-graders from Surgut had a balance of sympathetic and parasympathetic influence in heart rate regulation.