| Cutaneous vascular response to exercise and acute hypoxia. | |
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MedLine Citation:
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PMID: 7153126 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Six normal young men were studied during 50 min of moderate exercise (100-137 W) that included one 15-min (protocol 1) or two 10-min periods of breathing 11-12% O2 (in N2) (protocol 2). Absolute work intensity was kept constant for each subject, but relative severity increased during hypoxia owing to reduction in maximum O2 uptake. Our question was whether hypoxia causes cutaneous vasoconstriction; this in turn should cause a rise in esophageal temperature (Tes) and a shift in the forearm skin blood flow (SkBF)-Tes relationship. In all subjects forearm blood flow (FBF) (venous occlusion plethysmography) rose throughout exercise and Tes tended to stabilize. Neither 10- nor 15-min periods of hypoxia caused systematic changes in FBF or Tes or their relationship to each other. We conclude that hypoxia equivalent to that incurred at 4,500-5,000 m does not significantly alter the short-term regulation of SkBF and body temperature during moderate exercise. Net cutaneous vasoconstriction is not elicited by arterial chemoreflexes under these conditions. |
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Authors:
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L B Rowell; P R Freund; G L Brengelmann |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Journal of applied physiology: respiratory, environmental and exercise physiology Volume: 53 ISSN: 0161-7567 ISO Abbreviation: J Appl Physiol Publication Date: 1982 Oct |
Date Detail:
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Created Date: 1983-03-11 Completed Date: 1983-03-11 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 7801242 Medline TA: J Appl Physiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 920-4 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Anoxia / physiopathology* Body Temperature Regulation Humans Male Physical Exertion* Regional Blood Flow Skin / blood supply* Vasoconstriction Vasomotor System / physiology |
| Grant Support | |
ID/Acronym/Agency:
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HL-16910/HL/NHLBI NIH HHS; RR-37/RR/NCRR NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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