Hughes, R L Effect of inspired O2 on cardiopulmonary and metabolic responses to exercise in man. [electronic resource] - Journal of applied physiology Mar 1968 - 336-47 p. digital Publication Type: Journal Article ISSN: 0021-8987 Standard No.: 10.1152/jappl.1968.24.3.336 doi Subjects--Topical Terms: AdultBlood Circulation--physiologyBlood Gas AnalysisCardiac OutputHeart RateHumansHydrogen-Ion ConcentrationLactates--bloodOxygenOxygen ConsumptionPhysical ExertionRespiration--physiology