Document Detail


Dynamic thermography: analysis of hand temperature during exercise.
MedLine Citation:
PMID:  9846937     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Exercise has a noted effect on skin blood flow and temperature. We aimed to characterize the normal skin temperature response to exercise by thermographic imaging. A study was conducted on ten healthy and active subjects (age=25.8+/-0.7 years) who were exposed to graded exercise for determination of maximal oxygen consumption (VO2 max), and subsequently to constant loads corresponding to 50%, 70%, and 90% of VO2 max. The skin temperature response during 20 min of constant load exercise is characterized by an initial descending limb, an ascending limb and a quasi-steady-state period. For 50% VO2 max, the temperature decrease rate was - 0.0075+/-0.001 degrees C/s during a time interval of 390+/-47 s and the temperature increase rate was 0.0055+/-0.0031 degrees C/s during a time interval of 484+/-99 s. The level of load did not influence the temperature decrease and increase rates. In contrast, during graded load exercise, a continuous temperature decrease of -0.0049+/-0.0032 degrees C/s was observed throughout the test. In summary, the thermographic skin response to exercise is characterized by a specific pattern which reflects the dynamic balance between hemodynamic and thermoregulatory processes.
Authors:
A Zontak; S Sideman; O Verbitsky; R Beyar
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Annals of biomedical engineering     Volume:  26     ISSN:  0090-6964     ISO Abbreviation:  Ann Biomed Eng     Publication Date:    1998 Nov-Dec
Date Detail:
Created Date:  1999-02-18     Completed Date:  1999-02-18     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0361512     Medline TA:  Ann Biomed Eng     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  988-93     Citation Subset:  IM    
Affiliation:
The Heart System Research Center, The Julius Silver Institute of Biomedical Engineering, Department of Biomedical Engineering, Technion-Israel Institute of Technology, Haifa.
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MeSH Terms
Descriptor/Qualifier:
Adult
Biomedical Engineering
Body Temperature Regulation / physiology
Exercise / physiology*
Exercise Test
Hand
Hemodynamics / physiology
Humans
Male
Oxygen Consumption
Skin / blood supply
Skin Temperature / physiology*
Thermography / methods*
Time Factors

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


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