TY JOUR TI Substantiation of the use of means for the development of general endurance in adolescents with diseases of the cardiovascular system KW physical education KW adolescents KW cardiovascular diseases JO Scientific notes of P. F. Lesgaft University AU Selitrenikova, T.A. PY 2025 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft