| Plasma volumes and constituents of heat-exposed men before and after acclimatization. | |
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MedLine Citation:
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PMID: 1141085 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Five men underwent a 2-wk exercise regimen and were then exposed to 45 degrees C db, 28 degrees C wb, wind speed 1 m/s for 12 h while at rest. Body weight was maintained with 0.1% saline. One week later the exposure was repeated without rehydration. After heat acclimatization, the 12-h experiments were repeated. Frequent body weights, rectal temperatures, and venous blood samples were obtained. Results indicated that hemodilution upon acute heat exposure is partially due to protein influx into the vascular volume and the hemodilution allowed considerable loss of body water before plasma volume returned to preexposure values. Water within the vascular volume appeared to be in equilibrium with that in other body compartments before but not after acclimatization. Acclimatization altered the rate of protein transfer (and water movement) such that hemodilution was accomplished more rapidly than before acclimatization. Early hemodilution was quite labile and depended upon subject hydration during the first hour of heat exposure. |
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Authors:
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L C Senay |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of applied physiology Volume: 38 ISSN: 0021-8987 ISO Abbreviation: J Appl Physiol Publication Date: 1975 Apr |
Date Detail:
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Created Date: 1975-09-24 Completed Date: 1975-09-24 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 0376576 Medline TA: J Appl Physiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 570-5 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acclimatization* Adult Blood Proteins / metabolism* Body Height Body Temperature Body Water / analysis Body Weight Hematocrit Hot Temperature* Humans Male Mathematics Osmolar Concentration Oxygen Consumption Plasma Volume* Time Factors Water-Electrolyte Balance* |
| Chemical | |
Reg. No./Substance:
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0/Blood Proteins |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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