Breathing under high ambient pressure.
D000064:Acclimatization; D000328:Adult; D001274:Atmospheric Pressure; D006371:Helium; D006801:Humans; D008168:Lung / Q000502:physiology*; D008297:Male; D009584:Nitrogen; D012119:Respiration; D013147:Spirometry
D006371:Helium; D009584:Nitrogen