Document Detail

Effects of age on body temperature and blood pressure in cold environments.
MedLine Citation:
PMID:  4042547     Owner:  NLM     Status:  MEDLINE    
Mean deep body temperature fell by 0.4 +/- 0.1 (SD) degrees C in five sedentary, clothed 63-70 year old men and by 0.1 +/- 0.1 degrees C in four young adults after 2 h exposure in still air at 6 degrees C (P less than 0.001). The mean increase in systolic and diastolic pressure was significantly greater (P less than 0.002) in the older subjects (24 +/- 4 mmHg systolic, 13 +/- 4 mmHg diastolic) than in the young (14 +/- 6 mmHg systolic, 7 +/- 3 mmHg diastolic) after 2 h at 6 degrees C. A small rise in blood pressure occurred in the older men at 12 degrees C, but there was no increase in either group at 15 degrees C. The association of variables is particularly marked between systolic blood pressure and core temperature changes at 6 degrees C. There were no appreciable cold-adaptive changes in blood pressure or thermoregulatory responses after 7-10 days repeated exposure to 6 degrees C for 4 h each day. Blood pressure elevation in the cold was slower but more marked in the older men. These changes in blood pressure may provide a possible basis for delineating low domestic limiting temperature conditions.
K J Collins; J C Easton; H Belfield-Smith; A N Exton-Smith; R A Pluck
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Publication Detail:
Type:  Clinical Trial; Controlled Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Clinical science (London, England : 1979)     Volume:  69     ISSN:  0143-5221     ISO Abbreviation:  Clin. Sci.     Publication Date:  1985 Oct 
Date Detail:
Created Date:  1985-11-12     Completed Date:  1985-11-12     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  7905731     Medline TA:  Clin Sci (Lond)     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  465-70     Citation Subset:  IM    
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MeSH Terms
Blood Pressure*
Body Temperature*
Cold Temperature*
Heart Rate
Middle Aged
Skin Temperature

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

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