Document Detail


Redirection of biological heat from head to hands to support finger comfort in the cold.
MedLine Citation:
PMID:  16173678     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
INTRODUCTION: Maintaining hand comfort in the cold while sustaining optimal performance is still a challenge. There has been little research on the efficacy of transporting biological heat from the head to the hands to stabilize finger comfort, although there are notable temperature differences between these two areas in the cold. METHOD: A tubing bypass between the head and the hands was designed as an independent component in a liquid cooling/warming garment (LCWG). Seven subjects (four men, three women) were studied, comparing finger temperature (Tfing) change in two conditions: LCWG with additional bypass; and LCWG without bypass. The protocol consisted of three stages: 1) comfort stabilization, LCWG inlet water temperature 33 degrees C, water in loop in bypass condition 23 degrees C; 2) body cooling, LCWG inlet water temperature 20 degrees C; and 3) rewarming, LCWG inlet water temperature 45 degrees C. RESULTS: The time to reach the 25 degrees C Tfing discomfort criterion was significantly longer in the bypass condition (p < 0.01); Tfing was significantly higher at the same time point when Tfing of 25 degrees C was reached in the control condition (p < 0.01). CONCLUSION: The incorporation of a bypass transferring biological heat from a high to a low skin temperature area has potential to improve local finger comfort and thus increase the time personnel can work in cold environments.
Authors:
Victor S Koscheyev; Aitor Coca; Gloria R Leon; Robert C Trevino
Related Documents :
1981338 - The effect of thermal acclimation on the activity of arylhydrocarbon hydroxylase in rai...
20714728 - Thermal physiology and energetics in male desert hamsters (phodopus roborovskii) during...
7737108 - Effects of repeated exposures to severely cold environments on thermal responses of hum...
318228 - A comparison of the effects of prior cold incubation on cerebral cortex function in a h...
4842128 - Involvement of the host cell nuclear envelope membranes in the replication of japanese ...
571398 - The lectin-binding sites of the erythrocyte membrane components of horse, swine and she...
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Aviation, space, and environmental medicine     Volume:  76     ISSN:  0095-6562     ISO Abbreviation:  Aviat Space Environ Med     Publication Date:  2005 Sep 
Date Detail:
Created Date:  2005-09-21     Completed Date:  2005-11-29     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  7501714     Medline TA:  Aviat Space Environ Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  828-32     Citation Subset:  IM; S    
Affiliation:
Laboratory for Health and Human Performance in Extreme Environments, Department of Kinesiology, University of Minnesota, Minneapolis, MN, USA. kosch002@tc.umn.edu
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adult
Body Temperature*
Cold Temperature*
Equipment Design
Female
Hand / physiology*
Human Engineering
Humans
Male
Protective Clothing*
Task Performance and Analysis
Water
Chemical
Reg. No./Substance:
7732-18-5/Water
Investigator
Investigator/Affiliation:
V S Koscheyev / U MN, Minneapolis

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


Previous Document:  Rotation direction change hastens motion sickness onset in an optokinetic drum.
Next Document:  G tolerance and pulmonary effects of removing chest counterpressure during pressure breathing.