Document Detail


Evaluating physiological strain during cold exposure using a new cold strain index.
MedLine Citation:
PMID:  10444564     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
D S Moran; J W Castellani; C O'Brien; A J Young; K B Pandolf
Related Documents :
8377674 - Sudden infant death syndrome (sids): oxygen utilization and energy production.
16891514 - Molecular analysis of fungal microbiota in samples from healthy human skin and psoriati...
20885954 - Low levels of physical activity increase metabolic responsiveness to cold in a rat (rat...
11669404 - The effects of streptokinase and hydroxyethyl starch on in vitro clot disruption by ult...
2933574 - Effects of strenuous exercise on myocardial blood flow.
16495754 - Exercise training attenuates acute doxorubicin-induced cardiac dysfunction.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  The American journal of physiology     Volume:  277     ISSN:  0002-9513     ISO Abbreviation:  Am. J. Physiol.     Publication Date:  1999 Aug 
Date Detail:
Created Date:  1999-09-23     Completed Date:  1999-09-23     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0370511     Medline TA:  Am J Physiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  R556-64     Citation Subset:  IM    
Affiliation:
United States Army Research Institute of Environmental Medicine, Natick, Massachusetts 01760-5007, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
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:
0/Diuretics; 54-31-9/Furosemide

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


Previous Document:  Pressure-dependent renin release: effects of sodium intake and changes of total body sodium.
Next Document:  Increase in intake with sham feeding experience is concentration dependent.