TY JOUR TI STUDY OF SPECIAL ENDURANCE IN MIDDLE DISTANCE RUNNING OF CADETS OF EDUCATIONAL ORGANIZATIONS OF THE MIA OF RUSSIA KW load intensity KW physical training KW abilities KW control KW running speed JO Scientific notes of P. F. Lesgaft University AU Ezhova, A.V. AU CHernyshov, A.A. PY 2023 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft