[Changes in the electrocardiogram in prolonged physical work and respiration of a gas mixture with various concentration of oxygen].
D004562:Electrocardiography; D006801:Humans; D008297:Male; D009051:Mountaineering; D010100:Oxygen; D005082:Physical Exertion / Q000502:physiology*; D012119:Respiration; D013997:Time Factors
D010100:Oxygen
Izmeneniia élektrokardiogrammy pri dlitel'noĭ fizicheskoĭ rabote i vdykhanii gazovykh smeseĭ s razlichnym soderzhaniem kisloroda.