Navigation Links
Study sees transient heart dysfunction in some long-distance runners
Date:5/17/2009

ATS 2009, SAN DIEGOA new study using advanced cardiac imaging technology indicates that cardiac abnormalities experienced by some marathon runners following competition are temporary, and do not result in damage to the heart muscle. The study, conducted by researchers at the University of Manitoba, marked the first use of cardiac magnetic resonance imaging, or CMR, in a post-marathon setting.

The research will be presented on Sunday, May 17, at the 105th International Conference of the American Thoracic Society in San Diego.

"Although previous studies of marathon runners have demonstrated biochemical evidence of cardiac injury and have correlated these findings with echocardiographic evidence of cardiac dysfunction, this was the first time CMR has been used to further evaluate and understand the effects of marathon running on the heart," said study investigator Davinder S. Jassal, M.D., assistant professor of cardiology, radiology and physiology at St. Boniface General Hospital Research Centre in Winnipeg.

The study examined the cardiac health of 14 runners who participated in the full 2008 Manitoba Marathon in Winnipeg, Canada. All runners were classified, for purposes of the study, as "non-elite," meaning they participated on a casual, non-professional basis, with limited or no training. Prior to the marathon, each study participant underwent a comprehensive health screening, including blood tests to determine the levels of cardiac biomarkers, factors present in the blood that reflect the health of the heart muscle. Following the race, additional blood samples were taken and echocardiograms and CMR were performed.

Earlier studies have confirmed that cardiac biomarkers are elevated in many casual, non-professional athletes following competition, indicating possible damage to the heart muscle. In this study, echocardiograms and CMR performed immediately after competition revealed abnormalities, including irregularities in diastolic filling (relaxation abnormalities) on both sides of the heart and a decrease from 64 percent to 43 percent in the pumping function of the right ventricle. Although the cardiac biomarkers were elevated post marathon, there was no evidence of direct permanent injury to the heart muscle on CMR imaging.

"By using CMR, we were able to definitively show that these fluctuations do not result in any true damage of the heart, and the right ventricular dysfunction is transient, recovering one week following the race," Dr. Jassal noted.

The researchers are planning additional studies to determine whether these abnormalities may result in permanent damage in runners who participate in more than one marathon during a 12-month period.


'/>"/>

Contact: Keely Savoie
ksavoie@thoracic.org
212-315-8620
American Thoracic Society
Source:Eurekalert

Related medicine news :

1. Penn study finds pro-death proteins required to regulate healthy immune function
2. New study shows promise in reducing surgical risks associated with surgical bleeding
3. Study, meta-analysis examine factors associated with death from heatstroke
4. Study suggests loss of 2 types of neurons -- not just 1 -- triggers Parkinsons symptoms
5. Study says COPD testing is not measuring up
6. Preclinical study suggests organ-transplant drug may aid in lupus fight
7. Ability to cope with stress can increase good cholesterol in older white men, study finds
8. High alcohol consumption increases stroke risk, Tulane study says
9. Mailman School of Public Health study examines link between racial discrimination and substance use
10. Pitt study finds inequality in tobacco advertising
11. Stanford study highlights cost-effective method of lowering heart disease risks
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/30/2016)... ... April 30, 2016 , ... A ... use of the HyProCure sinus tarsi implant. ( http://www.cbc.ca/news/canada/ottawa/banned-quebec-dentist-pierre-dupont-working-as-chiropodist-in-ottawa-1.3515494 ) The ... minimally invasive procedure performed, when indicated, to correct the partial displacement of ...
(Date:4/29/2016)... Los Angeles, CA (PRWEB) , ... April 29, 2016 , ... ... Sarah Mirmelli, a mother and divorcee, shares her enthusiasm for Botox and lip injections, ... of the world famous youth oriented Coachella Valley Music and Arts Festival. The article ...
(Date:4/29/2016)... Atlanta, Georgia (PRWEB) , ... April 29, 2016 , ... ... 60 rural hospitals across the Southeast, celebrated the signature of Gov. Nathan Deal on ... by Rep. Geoff Duncan (R - Cumming), offers a 70% tax credit to individuals ...
(Date:4/29/2016)... ... April 29, 2016 , ... Coast Dental Fort Stewart ... at its new location in the Exchange Furniture Mall at 112 Vilseck Road in ... 50-inch Samsung Smart TV. Plus attendees will have the opportunity to meet general dentists ...
(Date:4/29/2016)... NY (PRWEB) , ... April 29, 2016 , ... ... and engineer of patented products, announces the Gyrociser, an exercise invention which aids ... worth $2 billion," says Scott Cooper, CEO and Creative Director of World Patent ...
Breaking Medicine News(10 mins):
(Date:4/28/2016)... Dr. Vivek Ahuja , ... phen Schmidt Join the Growing ... solutions for life sciences, today announced key new leaders have joined ... to a growing business.  This will bolster the company,s safety business ... joined ArisGlobal in the position of Vice President - Safety. George ...
(Date:4/28/2016)... New market research titled ... report that provides an overview of the Osteoarthritis,s ... identifying new targets and MOAs to produce first-in-class ... in this H1 2016 Osteoarthritis Pipeline report include ... Abiogen Pharma S.p.A., Ablynx NV, Achelios Therapeutics, Inc., ...
(Date:4/27/2016)... -- Elekta today announced that its leading-edge ... focal point of seven scientific presentations at ESTRO 35, ... & Oncology, taking place April 29 - May 3. ... and a high-field MRI scanner with sophisticated software that ... in real time. The MR-linac is designed to improve ...
Breaking Medicine Technology: