TY JOUR TI Vegetative tonus and regulation of circulatory system in athletes under stressful situations and the prevention of arrhythmias KW hemodynamics KW autonomic nervous system KW stress KW athletes KW heart rate variability KW arrhythmias JO Living psychology AU Zhuravlev, A.K. AU Semikin, G.I. AU Golubev, Y.Y. AU Golubeva, G.Y. AU Nechushkin, Y.V. PY 2017 IS 4 PB Ltd Radomir-M+