TY JOUR TI FORMATION OF ENDURANCE. THE 80/20 TECHNIQUE AS A SYSTEM FOR ACHIEVING RESULTS IN KETTLEBELL LIFTING KW kettlebell lifting KW strength endurance KW endurance KW strength JO Scientific notes of P. F. Lesgaft University AU ZHivoderov, A.V. AU Evdokimov, I.M. AU ZHivoderov, V.A. PY 2023 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft