TY JOUR TI A systematic review of individualized approaches in assessing the training quality of 12–14-year-old freestyle sprinters KW swimming KW freestyle sprinters KW athletic training KW individual approach JO Scientific notes of P. F. Lesgaft University AU Prigoda, G.S. PY 2026 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft