Heart rhythm regulation in first-year students of different ethnic groups providing for the power structure of total spectrum

The investigation of the activity of the central and autonomous mechanisms of heart rhythm regulation as parameters of adaptation to the academic activities of students of various ethnic groups has both theoretical and practical significance. The objective of the paper is to assess the role of central and autonomous mechanisms in heart rate regulation in first-year students of various ethnic groups by parameters and power structure of the total spectrum of heart rate variability (HRV). Materials and Methods. The study consisted of two stages and included 120 students (21-23 year of age) of three ethnic groups (Arabic, Latin American, and Russian). The study was conducted in October and April of the 2016-2017 academic year. The Poly-Spectrum-Rhythm software module was used to record a 5-minute ECG. Then the author examined spectral characteristics of HRV parameters for each student and divided the obtained characteristics into subgroups in each ethnic group, taking into account the leading type of autonomous heart rhythm regulation...