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:12/6/2016)... ... 2016 , ... TopConsumerReviews.com recently gave a best-in-class 5 star rating to SpinLife, ... freedom to people who need help getting around. For some, advancing age has led ... of rehabilitation after an illness or accident. There is a wide variety of scooters, ...
(Date:12/6/2016)... ... December 06, 2016 , ... ... magazine’s 2017 Training Top 125 for their industry leading training methods that engage ... recognizes USA as among the global elite in employer-sponsored training and development programs. ...
(Date:12/5/2016)... Austin, TX (PRWEB) , ... December 05, 2016 ... ... Center for Facial Plastic Surgery, is excited to announce the arrival of the ... hybrid fractional laser, with the ability to use tunable non-ablative and ablative wavelengths ...
(Date:12/5/2016)... ... 05, 2016 , ... SyncDog, Inc., the leading ISV for ... leading online tech news platform connecting technology innovators with news, experience, and knowledge ... state of enterprise mobility security today, and how the SyncDog SentinelSecure™ product line ...
(Date:12/5/2016)... ... December 05, 2016 , ... ... with leading global lifestyle design firm kathy ireland® Worldwide for five additional years, ... Worldwide entered into an exclusive licensing agreement three years ago to design and ...
Breaking Medicine News(10 mins):
(Date:12/5/2016)... Sanovas, Inc., a life science asset holding company ... wholly owned subsidiary, Intubation Science, Inc., and its LightSpeed Intubation ... http://photos.prnewswire.com/prnh/20161202/445251LOGO   ... Sanovas, Inc. ... There are over 40 million Endotracheal Intubations performed annually ...
(Date:12/5/2016)... Health and Gateway Health proudly announce a dynamic collaboration that ... plan members with specific high risk needs. In ... group of consumers, Wellbridge combines technology and population expertise with ... members, daily behaviors and lifestyle. ... , , ...
(Date:12/5/2016)... Dec. 5, 2016  Recently Zymo Research announced ... predictor, known as Horvath,s Clock. Based on this ... analysis service to academic and biopharma scientific researchers ... sample, other than sperm. The service ... biological age versus chronological age following drug treatments ...
Breaking Medicine Technology: