TY JOUR TI USING A TREADMILL OF A VARIABLE PROFILE IN THE SPORTS SECTION OF THE UNIVERSITY IN ATHLETICS KW intensity KW sequence KW volume of exercises KW microcycle KW speed JO Scientific notes of P. F. Lesgaft University AU Shvachun, O.S. AU Frolova, S.V. AU Prytkova, E.S. AU Gvozdevskikh, Y.S. AU Ezhova, A.V. PY 2023 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft