Document Detail

Reduced norepinephrine response to dynamic exercise in human subjects during O2 breathing.
MedLine Citation:
PMID:  7263413     Owner:  NLM     Status:  MEDLINE    
The purpose of this investigation was to study the influence of hyperoxia on catecholamine response to dynamic exercise. While breathing either 21 or 100% O2 seven subjects performed submaximal bicycle exercise. Arterial blood pressure was similar in both exercise experiments. The CO2 output was not influenced by 100% O2 breathing, but increments in plasma lactate concentration were reduced. The increases in plasma norepinephrine and epinephrine concentrations and heart rate were significantly lower during 100% O2 than during 21% O2 breathing. The results suggest that O2 plays an important role in the regulation of sympathetic nervous activity during dynamic exercise in humans.
B Hesse; I L Kanstrup; N J Christensen; T Ingemann-Hansen; J F Hansen; J Halkjaer-Kristensen; F B Petersen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of applied physiology: respiratory, environmental and exercise physiology     Volume:  51     ISSN:  0161-7567     ISO Abbreviation:  J Appl Physiol Respir Environ Exerc Physiol     Publication Date:  1981 Jul 
Date Detail:
Created Date:  1981-10-14     Completed Date:  1981-10-14     Revised Date:  2013-09-26    
Medline Journal Info:
Nlm Unique ID:  7801242     Medline TA:  J Appl Physiol Respir Environ Exerc Physiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  176-8     Citation Subset:  IM; S    
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MeSH Terms
Blood Pressure
Epinephrine / blood
Heart Rate
Lactates / blood
Lactic Acid
Norepinephrine / blood*
Physical Exertion*
Reg. No./Substance:
0/Lactates; 50-21-5/Lactic Acid; 51-41-2/Norepinephrine; 51-43-4/Epinephrine; 7782-44-7/Oxygen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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