Features of Physical Development of Schoolchildren in the Conditions of Specialized Training

The article presents a comparative analysis of physical development 13-year-olds and cadet basic profile teaching in urban schools the parameters somatometry visiometry characterizing development, functional state, adaptation heart body to current training loads. Coming puberty is marked by intense growth with heterochronous changes proportions dimensions its muscular skeletal system structure internal organs. During this period, role mechanisms for self-regulation activity and, general, autonomous regulation functions cardiovascular increases. At initial stage adolescents manifestation tachycardia cardiac type blood circulation It accompanied deterioration inotropic function myocardium against background pronounced effect sympatotonia vagotonia on systolic myocardium.