TY JOUR TI FACTORS DETERMINING THE NEED FOR THE USE OF EXERCISES FOR DYNAMIC MUSCLE RELAXATION IN KETTLEBELL ATHLETES KW factors KW kettlebell athletes KW exercises for dynamic muscle relaxation KW motor abilities KW general and strength endurance KW sports training JO Scientific notes of P. F. Lesgaft University AU Rudenko, D.V. AU Bolotin, A.E. PY 2023 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft