| Thermometry and calorimetry assessment of sweat response during exercise in the heat. | |
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MedLine Citation:
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PMID: 19943059 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Our objective was to characterise sweat rate responses in a hot environment during rest and subsequent increasing levels of exercise in relation to thermometrically (i.e., rectal, tympanic, mean skin and mean body temperatures) and calorimetrically derived (i.e., change in body heat storage) thermal parameters. Ten healthy males volunteered and entered an environmental chamber set at 42 degrees C. Participants rested seated during their first hour inside the chamber. Thereafter, they exercised to volitional exhaustion on a cycle ergometer at 20 W with step increments of 20 W h(-1). Across time, fluctuations in sweat rate were systematically associated with similar fluctuations in the integral of body heat storage (t = 13.16, P < 0.001), but not rectal (t = 0.98, P > 0.05), tympanic (t = 0.81, P > 0.05), mean skin (t = 0.12, P > 0.05), or mean body (t = 0.93, P > 0.05) temperatures. In addition, 95% limits of agreement and regression analyses showed that the changes in sweat rate demonstrated the highest agreement and strongest associations with changes in the integral of body heat storage. It is concluded that in a hot environment during rest and subsequent increasing levels of exercise sweat rate is associated with the cumulative changes in the rate of body heat storage. |
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Authors:
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Andreas D Flouris; Stephen S Cheung |
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Publication Detail:
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Type: Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't Date: 2009-11-27 |
Journal Detail:
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Title: European journal of applied physiology Volume: 108 ISSN: 1439-6327 ISO Abbreviation: Eur. J. Appl. Physiol. Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-02-26 Completed Date: 2010-06-01 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100954790 Medline TA: Eur J Appl Physiol Country: Germany |
Other Details:
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Languages: eng Pagination: 905-11 Citation Subset: IM |
Affiliation:
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Environmental Ergonomics Laboratory, School of Health and Human Performance, Dalhousie University, Halifax, Canada. aflouris@cereteth.gr |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Body Temperature / physiology* Body Temperature Regulation / physiology Calorimetry / methods* Exercise / physiology* Exercise Test Hot Temperature* Humans Male Sweat / metabolism Sweating / physiology* Temperature* Thermometers Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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