TY JOUR TI Features in the development of physical qualities of primary schoolchildren in the conditions of directed and comprehensive physical education KW primary schoolchildren KW directed physical education KW comprehensive physical education KW physical qualities JO Scientific notes of P. F. Lesgaft University AU Muhina, M.P. PY 2025 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft