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High altitude sojourn is a risk factor for hypobaric hypoxemia and subsequent altitude sickness. The aim of this study was to analyze the ef-fect of new type of yogic breathing?Maheshwarananda’s new Modified Bhujangini Pranayama performed by active yoga practitioners?on the arterial haemoglobin saturation of oxygen (measured by the pulse oximetry - SpO2) and the heart rate compared to normal spontaneous resting breathing. A pilot prospective study was conducted in the Himalayas at an altitude of 3,650 m. We monitored SpO2 and pulse rate in 34 experienced yoga practitioners. Within the 3 measurement days at the altitude of 3,650 m, the mean value of SpO2 increased from 89.11± 4.78 to 93.26±4.44 (P&lt;0.001) after the yogic breathing exercise. No significant changes were observed in pulse rate (P&lt;0.230) measured before and after yogic breathing. The new Yogic breathing?Maheshwarananda’s Modified Bhujangini Pranayama?is increasing the arterial haemoglobin saturation compared to normal resting spontaneous breathing. The heart rate was not affected by this type of yogic breathing.

Yogic breathing in hypobaric environment: breathing exercising and its effect on hypobaric hypoxemia and heart rate at 3,650-m elevation