Comparative Investigations of the Functioning of the Cardiovascular System Observed in Adolescent Male Residents of Cities of Magadan and Moscow

Abstract

There was executed the comparative study of functional indices of the cardiovascular system in adolescent boys aged of 13-16 years, residing in the city of Magadan (n=424) and Moscow (n=437). The recording of functional indices of hemodynamics in adolescents was made by the same method of the volumetric compression oscillometry method with the use of hardware-software complex “Globus” for the noninvasive study of central hemodynamics (“Globus”, Belgorod). There were revealed regional features of the dynamics of the development of the function of the cardiovascular system in adolescents residing under different climatic geographical and ecological conditions. There were established statistically reliable differences in hemodynamic indices during the age period of 13-15 years: Moscow schoolchildren have higher values of the blood pressure, cardiac output, stroke volume and left ventricular stroke power comparing with Magadan counterparts. In Magadan adolescents there was revealed the tendency towards higher values of heart rate. The analysis of the distribution of hemodynamics indices according to the type of self-regulation of blood-circulation shows 63.7% of schoolchildren of Magadan and Moscow to have cardiotype, 26.9% and 41.2% of adolescents are characterized by cardiovascular type, and vascular type is a common feature in 9.4% and 14.4% of examined adolescents.