| Effects of various environmental temperatures on effort angina. | |
| | |
MedLine Citation:
|
PMID: 483493 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Eleven patients with effort angina and a history of cold intolerance performed short-term bicycle exercise tests at various room temperatures, 20, 10, 0 and -10 degrees C, and a few patients also at -30 degrees C. A significant reduction of maximal working capability (expressed as maximal work load, MWL), limited by moderately severe angina, was found at -10 degrees C (7% +/- 1, SEM, P less than 0.05) compared with normal room temperature. At 0 and 10 degrees C changes of MWL were small and not significant, and at -30 degrees C no further decrease of MWL was seen. About half of the patients, however, showed a tendency toward a decrease in MWL with decreasing environmental temperature, and and the decrease in MWL correlated significantly with an increase in rate pressure product (RPP) during exercise at both 0 and -10 degrees C. Thus, the decrease in working capability on exposure to cold could be explained by an increase in heart work. Warming up effects of exercise, counteracting the cold-induced increase in peripheral vascular resistance, were indicated by a diminishing difference in systolic blood pressure between a cold and normal environment with increasing work time. |
| | |
Authors:
|
C Lassvik; N H Areskog |
Related Documents
:
|
6711913 - A simple technique for cold air and exercise challenge to assess bronchial reactivity: ... 3011893 - Stress levels of adrenaline amplify the blood pressure response to sympathetic stimulat... 15148273 - Clinical correlates and prognostic significance of exercise-induced ventricular prematu... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Upsala journal of medical sciences Volume: 84 ISSN: 0300-9734 ISO Abbreviation: Ups. J. Med. Sci. Publication Date: 1979 |
Date Detail:
|
Created Date: 1979-11-21 Completed Date: 1979-11-21 Revised Date: 2008-11-21 |
Medline Journal Info:
|
Nlm Unique ID: 0332203 Medline TA: Ups J Med Sci Country: SWEDEN |
Other Details:
|
Languages: eng Pagination: 173-80 Citation Subset: IM |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Angina Pectoris
/
physiopathology* Blood Pressure Exercise Test Heart / physiopathology* Heart Rate Humans Male Middle Aged Physical Exertion* Temperature* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: On how macromolecules reduce hemoglobin loss in hypotonic hemolysis.
Next Document: Reaction to cold of patients with coronary insufficiency.