title: Performance efficiency of men breathing oxygen-helium at depths between 100 feet and 1500 feet.
mesh_terms: D000328:Adult; D001128:Argon; D001274:Atmospheric Pressure; D001290:Attitude; D003243:Consciousness; D004242:Diving; D004562:Electrocardiography; D004781:Environmental Exposure; D005385:Fingers; D006801:Humans; D007222:Inert Gas Narcosis / Q000503:physiopathology / Q000517:prevention & control*; D008297:Male; D008606:Mental Processes; D009043:Motor Activity; D009048:Motor Skills; D010100:Oxygen; D012119:Respiration; D012890:Sleep; D013997:Time Factors; D014202:Tremor
chemical_list: D001128:Argon; D010100:Oxygen