TY JOUR TI STATE CONTROL OF CARDIOVASCULAR SYSTEM OF FREE-STYLE WRESTLING ATHLETES-STUDENTS DURING PRE-COMPETITION PERIOD KW students KW cardio-respiratory system KW heart contraction rate KW straining effort KW control testing KW freestyle wrestling KW Ruffie tests KW Genchev tests KW Stange tests JO Bulletin of KSAU AU Starostenko, A.G. PY 2012 IS PB Krasnoyarsk State Agrarian University