TY JOUR TI Model of the formation of motivation for self-development and self-improvement among correspondence students studying in the "Physical Education" profile KW higher physical education KW modeling KW motivation KW self-development KW physical fitness JO Scientific notes of P. F. Lesgaft University AU Aksenova, A.N. AU Isakova, T.I. AU Stroykina, L.V. AU Romashevskaya, N.I. PY 2025 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft