TY JOUR TI INNOVATIONS OF OPERATIONAL CONTROL IN PHYSICAL EDUCATION LESSONS (ON THE EXAMPLE OF ATHLETICS) KW digitalization KW operational control KW heart rate monitoring KW athletics KW assessment of the health-improving effectiveness of classes JO Scientific notes of P. F. Lesgaft University AU Kleymenova, M.D. AU Zvyagintsev, P.N. AU Kokoulina, O.P. PY 2023 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft