HOME >> MEDICINE >> NEWS
Does endurance exercise promote life-threatening changes in athletes' hearts?

RV (end-diastolic volume, EDV), the volume of blood left in the RV after the heart had contracted (end-systolic volume, ESV) and the fraction of blood pumped out of the RV in each heart beat (ejection fraction, EF). In addition, they measured the change in the diameter of the part of the RV where the blood flows out to the arteries (RV outflow tract shortening fraction, SF), and the thickness of the ventricular walls.

Hein Heidbchel, professor of cardiology/electrophysiology and director of the clinical EP laboratory who led the team, explained: "Although arrhythmogenic right ventricular cardiomyopathy is a known cause of arrhythmias in athletes, we found that we could diagnose it unequivocally in only six of the 22 athletes (27%). However, we could assign arrhythmias as definitely or probably originating from the right ventricle in 82% of the patients an RV origin of the arrhythmia was manifest in 12 (55%) of the 22 and probable in six (27%) of them.

"All athletes had a higher end-diastolic RV volume compared to controls, as expected in an athlete's heart. Importantly, we found that athletes with VA had an RV end-systolic volume that was significantly higher than athletes without VA, and, accordingly, athletes with VA had a significantly lower RV ejection fraction. This significance remained after we had excluded two athletes with presumed ARVC because of a family history of arrhythmias or sudden death."

The decrease in EF was not profound (down by approximately a fifth) but consistent among all athletes with VA and consistent across all measurement methods. The difference between the two groups of athletes indicated that the RV was not fulfilling its function of pumping blood out from the heart effectively in those with VA.

Prof Heidbchel said: "Our study clearly demonstrates RV functional abnormalities in high-level endurance athletes with VA. The observed RV dysfunction is more subtle than in familial or overt ARVC. ARVC was
'"/>

Contact: Emma Mason
wordmason@mac.com
44-077-112-96986
Oxford University Press
21-Jan-2007


Page: 1 2 3 4

Related medicine news :

1. Speed and endurance are doled out by the pound
2. Traditional Chinese exercises may increase efficacy of flu vaccine
3. Even low levels of weekly exercise drive down blood pressure
4. Some women benefit more from exercise when emphasis is on health, not appearance
5. Strengthening exercises may slow progression of ALS
6. Research shows aerobic exercise helps maintain muscle in elderly
7. Study finds role of mid-brain in integrating heart and respiratory response to exercise
8. NISTs stretching exercises shed new light on nanotubes
9. Task force recommends greater use of exercise testing in chronic disease
10. USC-led study suggests exercise reduces risk of developing invasive breast cancer
11. What prevents doctors from counseling their patients to lose weight, exercise and quit smoking?

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/25/2016)... ... , ... America Walks , a national advocacy organization that promotes walking ... of Pittsburgh Graduate School of Public Health , has been awarded a Walking ... from around the country to participate in a four-month training program designed to strengthen ...
(Date:5/25/2016)... IN (PRWEB) , ... May 25, 2016 , ... ... group health insurance, has seen a significant spike in their clients' employee participation ... their annual biometric health screening by implementing a high-deductible health plan with outcome-based ...
(Date:5/25/2016)... GA (PRWEB) , ... May 25, 2016 , ... ... solutions builder, has announced that it will join America's leading engineers at the ... be held at the Georgia World Congress Center. , Engineers, speakers and ...
(Date:5/24/2016)... Slidell, LA (PRWEB) , ... May 24, 2016 , ... ... which will feature a unique and patented refillable hanging wipe dispenser. The campaign kick-off ... 1, 2016 and will end June 25, 2016. The goal is to raise $1,000 ...
(Date:5/24/2016)... ... May 24, 2016 , ... Fire Door Solutions, ... one resource, from start to finish, for Life Safety compliance. These expanded ... surveys requested by the Joint Commission, and fire stopping reviews, inspections, and repairs. ...
Breaking Medicine News(10 mins):
(Date:5/23/2016)... , May 23, 2016 ... for the treatment of cancer and orphan genetic diseases, ... up to $4.4 million from the Israel Innovation Authority ... Israeli Ministry of Economy and Industry. The mission of ... entrepreneurship in various industries, including science and technology, while ...
(Date:5/23/2016)... STAMFORD, Conn. , May 23, 2016 /PRNewswire/ ... Company has entered into an agreement with Egalet ... various patent claims. As part of the agreement ... rights, and will enable all three companies to ... abuse-deterrent properties. "This agreement reflects the ...
(Date:5/20/2016)... PUNE, India , May 20, 2016 /PRNewswire/ ... Professional Survey Report 2016 to Medical Devices of ... professional and in-depth survey on the current state ... basic overview of the industry like definitions, classifications, ... gives information about manufacturing process like Raw Material ...
Breaking Medicine Technology:
Cached News: