TY JOUR TI Assessment of the relationship between the components of ensuring the effectiveness of the performances of qualified stayer swimmers at competitions KW swimming KW stayer swimmers KW individualization of the training process KW performance 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