Document Detail

Effects of simulated altitude and exercise upon ECGs of young black men.
MedLine Citation:
PMID:  1645059     Owner:  NLM     Status:  MEDLINE    
Twenty-five healthy black men between 17 and 21 years of age were evaluated. Their resting and exercise electrocardiograms were recorded at simulated sea level and at a simulated altitude of 4,000 m. Sea level exercise caused a reduction in the amplitudes of R waves and a lowering of J points. Exercise at a simulated altitude of 4,000 m caused a lowering of the J point in several leads and a reduction of the R wave amplitude in lead aVF. Hypoxia caused a reduction in the amplitudes of the T waves and a lowering of the J points in several leads. These effects of exercise and altitude, to a great extent, eliminated the appearance of "early repolarization," which is very common among young black men.
W Pearl; R J Zeballos; G Gregory; S M Connery; I M Weisman
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Journal of electrocardiology     Volume:  25     ISSN:  0022-0736     ISO Abbreviation:  J Electrocardiol     Publication Date:  1992 Jul 
Date Detail:
Created Date:  1992-09-04     Completed Date:  1992-09-04     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0153605     Medline TA:  J Electrocardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  197-201     Citation Subset:  IM    
Department of Pediatrics, William Beaumont Army Medical Center, El Paso, TX 79920.
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MeSH Terms
African Continental Ancestry Group*
Anoxia / physiopathology
Exercise / physiology*
Heart / physiology*

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

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