| Physiological responses to a cold, wet, and windy environment during prolonged intermittent walking. | |
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MedLine Citation:
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PMID: 9039013 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The potentially deleterious influence of body cooling on the thermoregulatory and metabolic responses to prolonged walking exercise has not been established. To address this problem, 10 men completed a 6-h intermittent (15 min rest, 45 min exercise) walking protocol in a thermoneutral (+15 degrees C) condition (Neutral) and a cold (+5 degrees C), wet, and windy condition (Cold). The first two exercise periods were conducted at a higher intensity (Higher, 6 km/h and 10% incline) than the subsequent four exercise periods (Lower, 5 km/h and 0% incline). Rectal temperature was lower and heart rate no different in Cold compared with Neutral, whereas the following were higher: oxygen consumption, respiratory exchange ratio, plasma norepinephrine and epinephrine, and blood lactate and glucose. There was no environmental influence on these variables during Higher. In conclusion, heat production during Lower was not sufficient to offset heat loss to the cold environment, and the resulting reduction in rectal temperature and metabolic perturbations may be detrimental if exercise is prolonged. |
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Authors:
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A S Weller; C E Millard; M A Stroud; P L Greenhaff; I A Macdonald |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The American journal of physiology Volume: 272 ISSN: 0002-9513 ISO Abbreviation: Am. J. Physiol. Publication Date: 1997 Jan |
Date Detail:
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Created Date: 1997-03-31 Completed Date: 1997-03-31 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: R226-33 Citation Subset: IM |
Affiliation:
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Department of Physiology and Pharmacology, University of Nottingham Medical School, Queen's Medical Centre, United Kingdom. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Blood / metabolism Body Temperature Body Temperature Regulation* Cold Temperature* Heart Rate Humans Male Metabolism* Oxygen Consumption Rectum Skin Temperature Time Factors Walking* Water* Wind* |
| Chemical | |
Reg. No./Substance:
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7732-18-5/Water |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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