Age-related changes in indicators of systemic blood circulation in males during the period of ascending ontogenesis of 11-19 years, depending on the level of motor activity

Indicators of systemic circulation are universal indicators of the state of the body, reflect the processes of human growth and development in ontogenesis. The effectiveness of the circulatory system plays a leading role in ensuring adaptation processes, which requires monitoring their development at the stages of ontogenesis and identifying factors of their regulation. Evaluation of the features of blood circulation in people of different ages requires taking into account the degree of incompleteness of the processes of development of the body, imperfections of neuro-reflex regulation, unevenness and instability of heart rate. The aim of the study was to determine the influence of systematic sports activities on the formation of hemodynamics in boys and boys during the period of ascending ontogenesis at 11-19 years. The age features of hemodynamic parameters were studied in boys and boys aged 11-19years, engaged in (volleyball, handball, judo, sambo; 3 times a week for two hours on the basis of children's and youth sports schools in Maykop) and not engaged in sports. The longitudinal study was conducted with the participation of students of general secondary schools № 3,5,11,22,29 and students of children's and youth sports schools in Maykop of the Republic of Adygea in the period from 2008 to 2019, as well as in the Regional Center for the Identification and Support of Gifted Children «Polaris-Adygea» ( Maykop) during winter and summer shifts in the direction of «Sport» in 2019-2021. It is shown that sports activities ensure the achievement of an optimal level of definitive and step-by-step values of indicators characterizing the activity of the cardiovascular system, and a higher level of maturation of these indicators relative to peers. According to a number of indicators characterizing the activity of the cardiovascular system, there is a sensitive period of development already at the age of 11. The sensitive period of complex development of indicators of functional development in athletes is the age segments of 11-12 and 1518 years, and in non-sports - 12-13 and 14-16 years.