Document Detail


Human thermoregulation: separating thermal and nonthermal effects on heat loss.
MedLine Citation:
PMID:  20036820     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Human thermoregulatory control during heat stress has been studied at rest, during exercise and more recently during exercise recovery. Heat balance in the body is maintained by changes in the rate of heat loss via adjustments in skin blood flow and sweating. Independent of thermal control, the actions of nonthermal factors have important consequences in the control of heat loss responses during and following exercise. While the effect of these nonthermal factors is largely considered to be an inhibitory or excitatory stimulus which displaces the set-point about which temperature is regulated, their effects on human thermoregulatory control are far reaching. Many factors can affect the relative contribution of thermal and nonthermal influences to heat balance including exercise intensity, hemodynamic status, and the level of hyperthermia imposed. This review will characterize the physiological responses associated with heat stress and discuss the thermal and nonthermal influences on sweating and skin blood flow in humans. Further, recent calorimetric evidence for the understanding of thermal and nonthermal contributions to human heat balance will also be discussed.
Authors:
Glen P Kenny; W Shane Journeay
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; Review     Date:  2010-01-01
Journal Detail:
Title:  Frontiers in bioscience (Landmark edition)     Volume:  15     ISSN:  1093-4715     ISO Abbreviation:  Front Biosci (Landmark Ed)     Publication Date:  2010  
Date Detail:
Created Date:  2009-12-28     Completed Date:  2010-04-23     Revised Date:  2013-07-29    
Medline Journal Info:
Nlm Unique ID:  101612996     Medline TA:  Front Biosci (Landmark Ed)     Country:  United States    
Other Details:
Languages:  eng     Pagination:  259-90     Citation Subset:  IM    
Affiliation:
Human and Environmental Physiology Research Unit, Laboratory for Human Bioenergetics and Environmental Physiology, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada, K1N 6N5. gkenny@uottawa.ca
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MeSH Terms
Descriptor/Qualifier:
Animals
Body Temperature / physiology*
Body Temperature Regulation / physiology*
Energy Metabolism
Exercise
Humans
Models, Biological
Pressoreceptors / physiology
Skin / blood supply,  metabolism
Sweating / physiology

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