Navigation Links
Combining resistance and endurance training best for heart health
Date:8/30/2010

OAK BROOK, Ill. A study of triathletes published in the online edition and October issue of Radiology reveals that the heart adapts to triathlon training by working more efficiently.

"To our knowledge, this is the first study using MRI to investigate effects of triathlon training on cardiac adaptations," said lead researcher Michael M. Lell, M.D., associate professor at the University of Erlangen-Nuremberg in Erlangen, Germany.

Dr. Lell and colleagues conducted cardiac MRI on 26 professional male triathletes (mean age 27.9) and 27 male controls (mean age 27.3), who were recreationally active no more than three hours per week. Triathletes in the study were top national and international competitors with six or more years of continuous training. Triathlons are multi-sport events consisting of swimming, cycling and running various distances in succession.

The cardiac MR images revealed that, compared to the recreational athletes, the triathletes had larger left atria and larger right and left ventricles. The triathletes' left and right ventricles also had greater muscle mass and wall thickness.

"In competitive athletes, it is important to distinguish physiological adaptations as a result of training from pathological conditions such as cardiomyopathy, the most common cause of sudden cardiac death," Dr. Lell said.

In cardiomyopathy, the size of the heart's four chambers and the thickness of the heart wall become asymmetrical, and the heart muscle is unable to pump effectively.

"The cardiac adaptations in the elite triathletes we studied were characterized by a balanced increase in left and right ventricular muscle mass, wall thickness, dilation and diastolic function," Dr. Lell said. "These adaptations reflect the nature of triathlon training, which has both endurance and resistance components."

Dynamic or endurance training includes activities such as running and swimming. Weightlifting is an example of static or resistance training, and cycling is a combination of both forms of exercise. Excessive training in either resistance or endurance disciplines leads to specific heart adaptations, and extreme endurance training is thought to be associated with a predisposition to sudden cardiac events.

"Cardiac adaptations in elite triathletes in our study were not associated with sudden cardiac death," Dr. Lell said.

The triathletes' resting heart rates were also 17 percent lower than those of the control group, which leads to greater cardiac blood supply and more economized heart function.

"The hearts of the triathletes in our study are stronger and able to manage the same workload with less effort," said Dr. Lell.


'/>"/>

Contact: Linda Brooks
lbrooks@rsna.org
630-590-7762
Radiological Society of North America
Source:Eurekalert

Related medicine news :

1. GUMC researchers say flower power may reduce resistance to breast cancer drug tamoxifen
2. "How Stupid Do They Think We Are?" --- Band Releases New Anthem in Support of Popular Citizens' Resistance
3. Scientists identify microRNA as possible cause of chemotherapy resistance
4. Think Tank & Radio Network Encourage Massive Resistance to ObamaCare
5. Overcoming tumor resistance to anti-cancer agent TRAIL
6. Spinfinity™ Magnetic Stirring Bars From Bel-Art Products Deliver Up to Three Times Wear Resistance
7. Treatment resistance in some cancer cells may be reversible
8. MiRNA-21 linked to tumor suppressor loss, herceptin resistance
9. Scientists Unravel Secret of HIV Resistance
10. One Sleepless Night Ups Insulin Resistance
11. Antibiotic Resistance Can Last a Year, Review Finds
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/27/2017)... CA (PRWEB) , ... February 27, 2017 , ... ... serving San Francisco and environs, is proud to announce an upgrade to the ... on the upgraded Yelp page on topics as diverse as Platelet Rich Plasma ...
(Date:2/26/2017)... ... February 26, 2017 , ... Today, ... the 7th Edition of International Social Design Awards. , The 7th A' ... System Designers, Governments and Institutions worldwide with realized projects and conceptual works. , ...
(Date:2/26/2017)... ... February 26, 2017 , ... LatitudeC Baby Products, an innovative ... it would be offering some it’s exclusive product line to the public through ... unique baby clothing/feeding products, will team up with AMAZON to distribute a limited ...
(Date:2/26/2017)... (PRWEB) , ... February 26, 2017 , ... ODH, Inc.™ ... Care Summit, February 27-28 at the Sheraton Pentagon City Hotel in Arlington, VA. ODH’s ... PerformCARE to use behavioral health analytics to improve Medicaid population health management. , ODH ...
(Date:2/25/2017)... ... February 25, 2017 , ... FCPX users now have the ability to ... Studios. With ProSharpen Color users have total control over sharpening amount, sharpening radius, threshold, ... With color spectrum tools users can visually see the color range effected with ease ...
Breaking Medicine News(10 mins):
(Date:2/24/2017)... Zimmer Biomet Holdings, Inc. (NYSE and SIX: ... at the Cowen and Company 37 th Annual ... on Tuesday, March 7, 2017 at 11:20 a.m. Eastern ... presentation can be accessed at http://wsw.com/webcast/cowen38/zbh .  The ... via Zimmer Biomet,s Investor Relations website at http://investor.zimmerbiomet.com ...
(Date:2/24/2017)... 24, 2017 Research and Markets has announced the ... 2016" report to their offering. ... The latest research Dry eye Drugs Price Analysis and Strategies ... eye market. The research answers the following questions: ... their clinical attributes? How are they positioned in the Global Dry eye ...
(Date:2/24/2017)... Feb. 24, 2017 Medical information groups ... increase their self-service capabilities to manage inquiries from ... New research from consulting leader Best ... developed self-service website portals where HCPs can sign ... one of many findings to emerge from the ...
Breaking Medicine Technology: