title: The efficiency of divers breathing oxy-helium.
mesh_terms: D004242:Diving; D004526:Efficiency; D006371:Helium / Q000494:pharmacology*; D006801:Humans; D009048:Motor Skills; D010100:Oxygen / Q000494:pharmacology; D010101:Oxygen Consumption; D012119:Respiration
chemical_list: D006371:Helium; D010100:Oxygen