Intersexual Differences in Daily Variations of the Central Hemodynamic Parameters in Students of the Northern Medical University

Parameters of central hemodynamics in young men and women - junior students of the medical faculty of Khanty-Mansiysk State Medical Academy have been studied. As a result of daily monitoring, the average daily indicators of heart rate (HR), systolic (SBP) and diastolic (DBP), mean arterial pressure (MAP), pulse (PP) blood pressure, vegetative index Kerdo (VIK) were detected. The values of HR, SBP, DBP, VIK, SBP time index, DBP time index, SBP variability, DBP variability were obtained in day and night periods. Thus the girls had significantly higher values of daily average HR, day and night HR compared to boys. The boys showed higher SBP values. According to DBP indicators vascular tone in the groups of boys and girls did not differ significantly. Thus, intersexual differences between girls and boys were observed in minute blood volume mechanisms related to heart work. As it turned out, male students had high parasympaticus tonus, especially at night, which corresponds to strengthening of parasympathetic activity. The activity of sympathetic nervous system in young women was significantly higher than in boys in all measurement periods. High pressure (SBP time index) effect on target organs was significantly higher in boys than in young women. BP variability in boys and girls was comparable to the normal values, but at night variability indices of SBP were higher in group of boys

Blood pressure · Cardiology · Heart rate · Heart rate variability · Hemodynamics · Mean arterial pressure · Healthcare Systems and Public Health · Human Health and Disease · Medicine · Psychology · Spaceflight effects on biology · Internal Medicine