TY JOUR TI Dynamics of the development of the additional professional education system at the Lesgaft University, St. Petersburg: an analysis of a four-year period (2022–2025) KW additional professional education KW advanced training KW professional retraining KW Lesgaft National State University of Physical Education KW Sport and Health JO Scientific notes of P. F. Lesgaft University AU Mihaylova, E.Y. AU Androsova, G.A. PY 2026 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft