Navigation Links
Marathoners Face Greater Risk of Artery Stiffness
Date:3/13/2010

And this could lead to high blood pressure, heart attack, even death, study suggests

SATURDAY, March 13 (HealthDay News) -- If regular exercise such as jogging is good for the heart, then turbo-charged workouts like training for marathons must be even better, right?

Not so fast, according to new research by Greek doctors who found that marathon runners have increased stiffness of the large arteries, suggesting that some types of high-intensity exercise may actually be bad for the heart, potentially leading to hardening of the arteries, high blood pressure, heart attack and even death.

"Our data suggest that exercise may have an inverted U-shape relation with arterial stiffness. In other words, when you do not exercise you have higher risk of cardiovascular events, but the same also happens when you exercise too much," study lead investigator Dr. Despina Kardara, of Athens Medical School, Hippokration Hospital, said in a news release. "Regular long-term endurance training is generally beneficial for heart health, but it seems that the cardiovascular system is like a sports car engine. If you do not use it, it will decay, but if you run it too fast for too long, you might burn it out."

The findings were presented Saturday at the American College of Cardiology's annual scientific session, in Atlanta.

The study, which the researchers said was the first examine the long-term effect of intense, protracted endurance training on the elastic properties of the large arteries, found that male marathon runners (females were not included in the study) had significantly increased stiffness of the aorta -- the major artery leading from the heart -- when compared with people who took part in recreational exercise.

The researchers evaluated blood pressure and artery elasticity in 49 healthy men who regularly trained to run marathons and 46 control subjects who weren't endurance athletes. The marathoners had significantly higher systolic blood pressure (the top number in a reading) than the non-marathoners, about 11 points higher on average, when measured at the brachial artery in the upper arm. Their mean blood pressure was also about 8 points higher on average than the control subjects.

The researchers concluded that the study participants' exercise regimens were related to arterial stiffness, suggesting that more intense exercise may lead to increased stiffness of the large arteries.

"This is important because stiff arteries lead to high blood pressure and can impair the heart, keeping it from performing properly," Kardara said. "Overall, aortic stiffness is an indicator of cardiovascular disease and hardening of the arteries, and a predictor of heart attack and related death."

The researchers said there may be several explanations for the stiffer arteries found in marathoners. One is that extreme exercise may place repeated and excessive stress on the artery wall, leading to its fatigue, said Dr. Charalambos Vlachopoulos, also of Athens Medical School, Hippokration Hospital, and a co-investigator of the study.

"Endurance athletes should be cautious about the amount and volume of their training programs, trying not to wear themselves out, and always work in close collaboration with their physicians, especially before participating in an intense endeavor like marathon running, Kardara said.

More information

To learn more about exercise and heart health, visit the U.S. National Heart, Lung, and Blood Institute.



-- HealthDay staff



SOURCE: American College of Cardiology, news release, March 13, 2010


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Marathoners Share Tom Brady and LaDainian Tomlinson Pain Relief Affinity
2. Marathoners Go the Distance on Heart Health
3. Prevalence of COPD Greater Than Thought
4. DuPont Focused on Meeting Global Demands for Greater Safety & Protection
5. Greater Baltimore Medical Center Taps Beryl for Customer Call Center Services
6. Kensey Nash Reports Acceleration of Stock Awards Triggered by Shareholder Acquisition of Greater Than 20% of Outstanding Shares
7. New strategies with greater antitumorous efficacy
8. Malaria product portfolio would benefit from greater cohesion amongst stakeholders
9. Greater China Corporation Forms TongRenTang Wellness Corporation
10. United Way of Greater Los Angeles Kicks Off Initiative to Prevent and End Homelessness With HomeWalk 2007
11. SEIU Applauds Bipartisan Leadership of Sen. Finance Committee in Push for Greater Oversight of Private Equity Takeovers of Nursing Homes
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/21/2017)... ... April 21, 2017 , ... Contrary ... that youth violence is declining—and at noteworthy rates. Between 2002 and 2014, Salas-Wright ... people involved in violence in the United States. The study, Trends in ...
(Date:4/21/2017)... ... April 21, 2017 , ... Brady (NYSE:BRC), a global leader in ... and B-7569 vinyl label materials received certification for the BS5609 British Marine ... remain intact and legible, for use on chemical drums shipped by sea. ...
(Date:4/21/2017)... ... April 21, 2017 , ... The adage “Show, don’t ... the next project in the company’s esteemed VISION House demonstration project series. Manifesting the ... the amount of resources they need to live affordably and abundantly without unduly taxing ...
(Date:4/21/2017)... ... 2017 , ... The Hong Kong Polytechnic University (PolyU) launched today the University ... institutions in Hong Kong to support teaching, learning and research. It is also the ... facilities in Hong Kong. , With an area of 620 square metres and ...
(Date:4/21/2017)... , ... April 21, 2017 , ... Alive for ... who wish to overcome their mental health struggles. The Alive team uses advanced ... says: “Our approach in dealing with a mental health struggle is based on ...
Breaking Medicine News(10 mins):
(Date:4/20/2017)... Ind. , April 20, 2017  Zimmer Biomet ... in musculoskeletal healthcare, today announced that it will be ... Care Conference at the InterContinental Hotel in ... Zimmer Biomet will present at 11:20 a.m. Eastern Time. ... be accessed via Zimmer Biomet,s Investor Relations website at ...
(Date:4/20/2017)... 20, 2017  CVS Pharmacy, the retail division ... new store design to enhance the retail customer ... health-focused products and expanded beauty selections paired with ... discover new offerings. Together with its innovative digital ... the customer experience at CVS Pharmacy.  ...
(Date:4/20/2017)... , April 20, 2017 Eyevensys, ... the first non-viral gene expression technology that enables the ... eye to address a wide range of ophthalmic diseases, ... and Healthcare products Regulatory Agency (MHRA) to advance its ... ...
Breaking Medicine Technology: