The impact of repeated marathon running on cardiovascular function in the aging population

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dc.contributor.authorKarlstedt, Erin
dc.contributor.authorChelvanathan, Anjala
dc.contributor.authorDa Silva, Megan
dc.contributor.authorCleverley, Kelby
dc.contributor.authorKumar, Kanwal
dc.contributor.authorBhullar, Navdeep
dc.contributor.authorLytwyn, Matthew
dc.contributor.authorBohonis, Sheena
dc.contributor.authorOomah, Sacha
dc.contributor.authorNepomuceno, Roman
dc.contributor.authorDu, Xiaozhou
dc.contributor.authorMelnyk, Steven
dc.contributor.authorZeglinski, Matthew
dc.contributor.authorDucas, Robin
dc.contributor.authorSefidgar, Mehdi
dc.contributor.authorMackenzie, Scott
dc.contributor.authorSharma, Sat
dc.contributor.authorKirkpatrick, Iain D
dc.contributor.authorJassal, Davinder S
dc.date.accessioned2012-09-10T11:16:32Z
dc.date.available2012-09-10T11:16:32Z
dc.date.issued2012-08-20
dc.date.updated2012-09-10T11:16:33Z
dc.description.abstractAbstractBackgroundSeveral studies have correlated elevations in cardiac biomarkers of injury post marathon with transient and reversible right ventricular (RV) systolic dysfunction as assessed by both transthoracic echocardiography (TTE) and cardiovascular magnetic resonance (CMR). Whether or not permanent myocardial injury occurs due to repeated marathon running in the aging population remains controversial.ObjectivesTo assess the extent and severity of cardiac dysfunction after the completion of full marathon running in individuals greater than 50 years of age using cardiac biomarkers, TTE, cardiac computed tomography (CCT), and CMR.MethodsA total of 25 healthy volunteers (21 males, 55 ± 4 years old) from the 2010 and 2011 Manitoba Full Marathons (26.2 miles) were included in the study. Cardiac biomarkers and TTE were performed one week prior to the marathon, immediately after completing the race and at one-week follow-up. CMR was performed at baseline and within 24 hours of completion of the marathon, followed by CCT within 3 months of the marathon.ResultsAll participants demonstrated an elevated cTnT post marathon. Right atrial and ventricular volumes increased, while RV systolic function decreased significantly immediately post marathon, returning to baseline values one week later. Of the entire study population, only two individuals demonstrated late gadolinium enhancement of the subendocardium in the anterior wall of the left ventricle, with evidence of stenosis of the left anterior descending artery on CCT.ConclusionsMarathon running in individuals over the age of 50 is associated with a transient, yet reversible increase in cardiac biomarkers and RV systolic dysfunction. The presence of myocardial fibrosis in older marathon athletes is infrequent, but when present, may be due to underlying occult coronary artery disease.
dc.description.versionPeer Reviewed
dc.identifier.citationJournal of Cardiovascular Magnetic Resonance. 2012 Aug 20;14(1):58
dc.identifier.doihttp://dx.doi.org/10.1186/1532-429X-14-58
dc.identifier.urihttp://hdl.handle.net/1993/8691
dc.language.rfc3066en
dc.rightsopen accessen_US
dc.rights.holderErin Karlstedt et al.; licensee BioMed Central Ltd.
dc.titleThe impact of repeated marathon running on cardiovascular function in the aging population
dc.typeJournal Article
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