TY JOUR TI Unctional Support of the Athletes’ Physical Stress at Breath Holding KW free diver KW breath holding KW hypoxia KW heart beat rate KW arterial oxygen saturation JO Journal of New Medical Technologies. eJournal AU Nafeeva, A.. AU Zelenkova, I.. AU Kulin, A.. AU Chernyshov, S.. AU Vagin, Y.. AU Kiselkina, M.. PY 2014 IS 8 PB INFRA-M Academic Publishing LLC.