AUTONOMIC RESISTANCE AND HEART RATE VARIABILITY IN ADOLESCENTS IN HIGH AND LOWER MOUNTAIN

The aim of our study was to study the indicators of variability heart rate (HRV) of adolescents living in the low-mountain area of Bishkek (700 meters above sea level) and the high-mountain area of At-Bashy region of the Kyrgyz Republic (2060 m above sea level). Heart rate variability allows to evaluate the functional the body’s ability to timely identify deviations in work regulatory systems of the body and carry out preventive activities aimed at maintaining the health of the child. Target study group – adolescents aged 15-17 years from the low- mountain district -28, high-mountainous region -25 people. The study was carried out according to the method of R.M.Baevsky. Study of HRV in adolescents under conditions highlands and lowlands is held for the first time. The results were obtained: according to the assessment of heart rate variability it was found that in adolescents in high mountains, sympathetic influence of the autonomic nervous system is 2 times higher than in adolescents of lowlands. In adolescents in high altitude conditions, the CVS adaptive potential index, which allows assessing the functional state of regulatory systems of the body and the degree of involvement in stress by 5 % below indicators in low- mountain conditions. According to the indicator of fitness of the cardiovascular system to loads, the coefficient of endurance in adolescents in high mountains was 15 % higher than in adolescents in low mountains.