TY JOUR TI THE USE OF ATHLETICS IN THE PROCESS OF STUDYING ELECTIVE DISCIPLINES IN PHYSICAL CULTURE AND SPORTS IN ORDER TO INCREASE THE LEVEL OFPHYSICAL FITNESS OF YOUNG MEN KW boys 18-20 years old KW athletics KW physical fitness KW elective disciplines in physical education and sports JO Scientific notes of P. F. Lesgaft University AU Ermakova, Y.N. AU Osokina, E.A. AU Korneva, M.A. AU Mayorova, N.S. PY 2023 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft