TY JOUR TI Improvement of the management system in the strategic planning of the individualization of the training process of qualified stayer swimmers KW swimming KW stayer swimmers KW strategic planning KW training process KW managing the training process JO Scientific notes of P. F. Lesgaft University AU Karpova, S.N. PY 2025 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft