| Evaluating physiological strain during cold exposure using a new cold strain index. | |
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MedLine Citation:
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PMID: 10444564 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A cold strain index (CSI) based on core (T(core)) and mean skin temperatures (T(sk)) and capable of indicating cold strain in real time and analyzing existing databases has been developed. This index rates cold strain on a universal scale of 0-10 and is as follows: CSI = 6.67(T(core t) - T(core 0)). (35 - T(core 0))(-1) + 3.33(T(sk (t)) - T(sk 0)). (20 - T(sk 0))(-1), where T(core 0) and T(sk 0) are initial measurements and T(core t) and T(sk t) are simultaneous measurements taken at any time t; when T(core t) > T(core 0), then T(core t) - T(core 0) = 0. CSI was applied to three databases. The first database was obtained from nine men exposed to cold air (7 degrees C, 40% relative humidity) for 120 min during euhydration and two hypohydration conditions achieved by exercise-heat stress-induced sweating or by ingestion of furosemide 12 h before cold exposure. The second database was from eight men exposed to cold air (10 degrees C) immediately on completion of 61 days of strenuous outdoor military training, 48 h later, and after 109 days. The third database was from eight men repeatedly immersed in 20 degrees C water three times in 1 day and during control immersions. CSI significantly differentiated (P < 0.01) between the trials and individually categorized the strain of the subject for two of these three databases. This index has the potential to be widely accepted and used universally. |
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Authors:
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D S Moran; J W Castellani; C O'Brien; A J Young; K B Pandolf |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: The American journal of physiology Volume: 277 ISSN: 0002-9513 ISO Abbreviation: Am. J. Physiol. Publication Date: 1999 Aug |
Date Detail:
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Created Date: 1999-09-23 Completed Date: 1999-09-23 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 0370511 Medline TA: Am J Physiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: R556-64 Citation Subset: IM |
Affiliation:
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United States Army Research Institute of Environmental Medicine, Natick, Massachusetts 01760-5007, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Body Temperature Body Temperature Regulation / physiology Body Water / metabolism Cold Temperature* Databases as Topic Diuretics / pharmacology Exercise / physiology Furosemide / pharmacology Hot Temperature Humans Humidity Immersion Male Rectum / physiopathology Skin Temperature Stress, Physiological / etiology*, physiopathology* Sweating Temperature Sense / physiology |
| Chemical | |
Reg. No./Substance:
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0/Diuretics; 54-31-9/Furosemide |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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