A steady increase in the number of young sportsmen predetermines the relevance of studying the nature and severity of cardiovascular system remodeling in young athletes, including the development of arterial hypertension (AH) and left ventricular myocardial hypertrophy (LVHM). Objective. To study the prevalence and nature of arterial hypertension (AH) and its associations with signs of cardiovascular remodeling in young athletes taking into account pathogenetic relationship and genetic determination. Characteristics of children and methods. The study included 80 young athletes (including 42 boys, average age 14,5±1,54 years), divided into 4 groups depending on the kind of sports (1 - cyclic, 2 - game, 3 - complex coordination, 4 - power). We used the following research methods: “office” (i.e. during visit to the doctor) measurement of blood pressure, electrocardiography, echocardiography, color Doppler scanning of the neck vessels, daily monitoring of blood pressure, bicycle ergometry, genetic testing using t