Is man able to breathe once a minute for an hour?: The effect of yoga respiration on blood gases

The ventilatory response to hypercapnia and arterial blood gases during ujjai respiration of once per minute for an hour were determined in a professional hatha yogi. The results suggest that lower chemosensitivity to hypercapnia in yoga practitioners may be due to an adaptation to low arterial pH and high Pa-Co2 for long periods.