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Arterial catecholamines in hypoxic exercise in man.
Metadata
JournalClin Sci Mol MedNot FoundDate
1975-Nov
Publication Type
Journal Article
Volume
1975-Nov / 49 : 503-6
Author
Clancy LJ , Critchley JA , Leitch AG , Kirby BJ , Ungar A , Flenley DC
DoiPMIDMESH
Adult
Arteries
Epinephrine
Humans
Hydrogen-Ion Concentration
Hypoxia
Male
Norepinephrine
Oxygen
Physical Exertion
Respiration
Abstract
1. We measured the minute ventilation and arterial blood catecholamine concentrations in four normal men standing and at two levels of moderate treadmill exercise breathing 14% oxygen or air. 2. Minute ventilation was significantly higher during hypoxic exercise than during normoxic exercise at an oxygen uptake of 1500 ml/min. 3. Arterial plasma noradrenaline during hypoxic exercise at an oxygen uptake of 1500 ml/min was significantly greater than at rest. 4. Arterial plasma noradrenaline during normoxic exercise at an oxygen uptake of 1500 ml/min was not elevated above the resting concentration. 5. The results are compatible with the suggestion that increased concentrations of arterial plasma noradrenaline contribute to the hypoxic potentiation of the respiratory response to moderate exercise.
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Clin Sci Mol MedClinical science and molecular medicine
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