TY JOUR TI INCREASING THE QUALITY OF ENDURANCE AT THE LESSONS OF THE PHYSICAL CULTURE AND SPORTS KW general endurance tests KW sports improvement group KW football KW volleyball KW athletics KW distance 3 km KW K. Cooper's test (12 min run). JO Scientific Papers Collection of the Angarsk State Technical University AU Yaroshevich, I.N. PY 2021 IS 2021 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»