Horban L. Features of blood circulation in people with different psychosomatic parameters

The dissertation is devoted to the study of peripheral blood circulation, features of vascular tone and their autonomous regulation, as well as to the establishment higher nervous activity properties in young people aged 18-22 years of different somatotypes with normal and high blood pressure. It was found that the peripheral hemodynamics of the lower extremities in individuals with normal blood pressure and the predominance of endomorphic component in the somatotype (meso-, ectomorphic endomorphs) was characterized by significantly lower tone of large arteries, as well as lower systolic wave amplitude and rapid blood flow amplitude compared with individuals with the ectomorphic or mesomorphic component predominance (p <0.05-0.01). It was also found that the maximum blood flow rate was the lowest, and the slow blood flow time, diastolic wave amplitude and peripheral resistance coefficient were reliably higher (p <0.05-0.01) compared with ectomorphs and mesomorphs. In young people with high blood pressure with predominance of the endomorphic component, a significantly higher tone of medium and small arteries of the lower extremities was found, which is confirmed by much smaller values of systolic wave and rapid blood flow amplitudes, as well as an increase in diastolic wave amplitude (p <0.05-0.01). A decrease in vasomotor function of the endothelium was found in people with normal blood pressure and with a predominance of endomorphic component of somatotype, but the percentage of such subjects was significantly lower (26 % and 20 %) compared with the group of high blood pressure (60 % та 53,3 %). It was found that the regulation of heart rate in young people with high blood pressure and predominance of the endomorphic somatotype component was characterized by decrease in tone of the autonomic nervous system with the transition to suprasegmental levels of regulation, pronounced influence of the vasomotor center on the heart activity, reduction of stress resistance and functional reserves. The highest rate of functional mobility and strength of nervous processes was in subjects with the predominance of ecto- and mesomorphic somatotype components, which may indicate a higher speed level in processing complex information in representatives of these somatotypes compared to representatives of endomorphic somatotype.