Abstract:Changes in the cardiorespiratory indicators due to the prolonged (25 min) inhalation of a respira tory mixture with an exponentially falling (from 20.9% to 10%) oxygen concentration were studied in healthy young men. The efficiency of oxygen uptake (as the ventilatory equivalent of O 2 ) in the lungs has been shown to fall particularly promptly (within the first 2-5 min). Individual manifestations of this fall were variable (ranging from 22 to 84% of the baseline data) and driven, to a considerable degree, by … Show more
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