TY JOUR TI THE CONTENT OF THE TRAINING OF MIDDLE-DISTANCE RUNNERS IN THE CONDITIONS OF THE MIDDLE MOUNTAINS KW athletics KW training camps KW mid-mountain KW middle distance running JO Scientific notes of P. F. Lesgaft University AU Markushin, V.S. PY 2023 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft