Navigation Links
Combining resistance and endurance training best for heart health

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
Radiological Society of North America

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:
(Date:6/27/2016)... (PRWEB) , ... June 27, ... ... in the patient payment industry today announced its strategic partnership with Connance, ... system workflows. , The two companies’ proven, proprietary technology combine to provide ...
(Date:6/26/2016)... ... June 26, 2016 , ... On June 10-11, 2016, A Forever ... Cereal Festival and World’s Longest Breakfast Table in Battle Creek, MI, where the rehabilitation ... as home to some of the world’s leading providers of cereal and other breakfast ...
(Date:6/26/2016)... ... June 26, 2016 , ... Many ... been diagnosed with endometriosis. These women need a treatment plan to not only ... approach that can help for preservation of fertility and ultimately achieving a pregnancy. ...
(Date:6/25/2016)... ... June 25, 2016 , ... "With 30 hand-drawn hand gesture animations, FCPX ... Austin - CEO of Pixel Film Studios. , ProHand Cartoon’s package transforms over ... Cut Pro X . Simply select a ProHand generator and drag it above media ...
(Date:6/25/2016)... ... ... On Friday, June 10, Van Mitchell, Secretary of the Maryland Department of Health and ... their exemplary accomplishments in worksite health promotion. , The Wellness at Work Awards took ... the BWI Marriott in Linthicum Heights. iHire was one of 42 businesses to receive ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... --  Pulmatrix, Inc ., (NASDAQ: PULM ), ... today that it was added to the Russell Microcap ... set of U.S. and global equity indexes on June ... for Pulmatrix," said Chief Executive Officer Robert Clarke ... in developing drugs for crucial unmet medical needs, and ...
(Date:6/23/2016)... DUBLIN , June 23, 2016 ... "Dialysis Devices Global Market - Forecast to 2022" report ... is the treatment method for the patients with kidney failure, ... and excess fluid from the patient,s blood and thus the ... sodium, potassium and chloride in balance. Increasing ...
(Date:6/23/2016)... Roche (SIX: RO, ROG; OTCQX: RHHBY) announced that it ... (procalcitonin) assay as a dedicated testing solution for people ... Roche is the first IVD company in the U.S ... assessment and management. PCT is a sepsis-specific ... blood can aid clinicians in assessing the risk of ...
Breaking Medicine Technology: