TY JOUR TI Development of lead hand activity in the training of highly qualified boxers KW boxing KW specialized physical training KW training process KW speed endurance JO Scientific notes of P. F. Lesgaft University AU Sinicyn, D.K. AU Shamrai, L.V. AU Namazov, A.K. PY 2025 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft