Document Detail

Late potentials in female triathletes before and after prolonged strenuous exercise.
MedLine Citation:
PMID:  12825326     Owner:  NLM     Status:  MEDLINE    
The objectives of this study were to evaluate the prevalence of late potentials (LP) in female triathletes before and after prolonged strenuous exercise (PSE), and to determine whether LP are related to greater left ventricular (LV) dimensions and/or mass. Thirteen female triathletes were examined immediately before (Pre), one hour after (Post), and 24 to 48 hours after PSE (Recovery) using signal-averaged electrocardiography (SAECG). Late potentials were evaluated by two or more standard SAECG anomalies. Left ventricular dimensions and mass were measured Pre using two-dimensional echocardiography. Results revealed that no significant differences existed between Pre, Post, and Recovery in the SAECG parameters. Four athletes displayed LP during Pre. The incidence of LP during did not increase Post. There were no significant relationships between LV dimensions or mass and SAECG parameters. In conclusion, a small portion of female triathletes display LP before and after PSE, which are not worsened by PSE nor related to increased LV dimensions and/or mass.
Darren E R Warburton; Jonathon McGavock; Robert C Welsh; Mark J Haykowsky; H Arthur Quinney; Dylan Taylor; Vladimir Dzavik
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Canadian journal of applied physiology = Revue canadienne de physiologie appliquée     Volume:  28     ISSN:  1066-7814     ISO Abbreviation:  Can J Appl Physiol     Publication Date:  2003 Apr 
Date Detail:
Created Date:  2003-06-26     Completed Date:  2003-07-28     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9306274     Medline TA:  Can J Appl Physiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  153-64     Citation Subset:  IM    
Faculty of Physical Education and Recreation, Div. of Cardiology, Faculty of Medicine, Univ. of Alberta, Edmonton, AB, T6G 2M7.
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MeSH Terms
Action Potentials*
Exercise / physiology*
Physical Endurance / physiology
Signal Processing, Computer-Assisted
Sports / physiology*
Ventricular Function, Left*

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