Document Detail


Electrocardiogram and echocardiogram findings in runners completing a half marathon.
MedLine Citation:
PMID:  20934826     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
OBJECTIVE: The purpose of this study was to prospectively evaluate electrocardiograms (ECGs) before and after running a half marathon to characterize the changes that occur after exertion. Echocardiograms were also done postrace on selected runners.
METHODS: Volunteer runners older than 18 years completed a questionnaire detailing demographic and medical history. Prerace ECGs were performed at a prerace symposium and postrace ECGs were performed within 15 minutes of the participants' completion of the race. Echocardiograms were performed on a random sampling of runners who were judged to have abnormal or changed postrace ECGs.
RESULTS: Eighty-seven runners were enrolled and completed the study. There were 46 males (53%) and 41 females (47%). Fifty-four (62%) runners had changes noted in their ECGs. The most common changes noted were atrial enlargement (37 runners). Other abnormalities seen on the ECGs included new conduction abnormalities, new Q waves, nonspecific ST/T-wave changes, and resolution of previous abnormalities that were seen on initial ECG. There was no statistically significant difference between runners with ECG changes and runners without ECG changes when comparing sex, age, previous marathon experience, exercise, history of exercise-induced chest pain, medical history, and family history of heart disease. Twenty runners with changed or abnormal postrace ECGs had postrace echocardiograms, and 8 were abnormal. Of the abnormal echocardiograms, 2 runners had normal but changed postrace ECGs and 4 runners had abnormalities that were inconsistent with what was seen on ECG.
CONCLUSION: Our study suggests that ECG abnormalities and changes can occur in distance runners, but their significance is unclear.
Authors:
Alicia B Minns; Cameron McFarland; Monet Strachan; Wendy Austin; Edward Castillo; Ori Ben-Yehuda; Richard F Clark
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Publication Detail:
Type:  Journal Article     Date:  2010-10-08
Journal Detail:
Title:  The American journal of emergency medicine     Volume:  29     ISSN:  1532-8171     ISO Abbreviation:  Am J Emerg Med     Publication Date:  2011 Nov 
Date Detail:
Created Date:  2011-11-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8309942     Medline TA:  Am J Emerg Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1182-7     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 Elsevier Inc. All rights reserved.
Affiliation:
Division of Medical Toxicology, Department of Emergency Medicine, University of California, San Diego, San Diego, CA 92103-8925, USA; Department of Emergency Medicine, University of California, San Diego, San Diego, CA 92103-8676, USA.
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