Navigation Links
Why athletes are more likely to need pacemakers in old age
Date:5/13/2014

A new study by The University of Manchester has shed light on why athletes are more likely to have abnormal heart rhythms.

Elderly athletes with a lifelong history of training and competing in endurance events like marathons, triathlons and iron man challenges can have heart rhythm disturbances, known as arrhythmias.

The Manchester research in rodents, funded by the British Heart Foundation, shows molecular changes in the heart's pacemaker occur in response to exercise training.

The finding, reported in Nature Communications, overturns the commonly held belief that an increased activity of the autonomic nervous system causes this specific reaction to endurance training.

While normal adults have resting heart rates between 60-100 beats per minute, hearts of endurance athletes can beat only 30 times per minute or even lower at night time when there can be long pauses between heart beats.

Cyclists Sir Chris Hoy and Miguel Indurain reportedly had resting heart rates of 30 and 28 beats per minute.

Dr Alicia D'Souza, from The University of Manchester and first author on the paper, said: "The heart rate is set by the heart's pacemaker, but this is controlled by the nervous system. The 'vagal' nerves lower the heart rate and therefore it was assumed the low heart rate of athletes is the result of over activity of the vagal nerves.

"But our research shows this is not the case. Actually the heart's pacemaker changes in response to training and in particular there is a decrease in an important pacemaker protein, known as HCN4, and this is responsible for the low heart rate."

The researchers say these molecular changes in the sinus node - the cardiac structure responsible for generating heart rhythm - may help us to understand the more frequent occurrence of heart rhythm disturbances or even loss of consciousness in athletes.

Professor Mark Boyett, lead researcher on the study, added: "T
'/>"/>

Contact: Ali Barbuti
alison.barbuti@manchester.ac.uk
44-016-127-58383
University of Manchester
Source:Eurekalert

Page: 1 2

Related medicine news :

1. Study: Concussion rate in high-school athletes more than doubled in 7-year period
2. Study: Custom-made mouthguards reduce athletes risk of concussion
3. New study finds 2.5 million basketball injuries to high school athletes in 6 seasons
4. Young athletes from higher income families more likely to suffer serious overuse injuries
5. Young athletes with knee pain may turn to meniscus transplant
6. Genetics may explain high-functioning senior athletes with hip abnormalities
7. Sports medicine physical of the future could help athletes ESCAPE sudden cardiac death
8. New NuGo Stronger: First Non-GMO High Protein Bar with rBGH-Free Whey Protein for Serious Athletes
9. Athletes “Toward Injury Prevention in Sports” TIPS Gets Going in Las Vegas
10. How an Internet Start-Up Is Helping Sport Organizations Train Athletes and Raise Money at the Same Time
11. Zensah’s® New Compression Ankle/Calf Sleeves Bring Innovation to Rest and Recovery for Athletes
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/24/2015)... 2015 Scientists with Cardno ChemRisk, a ... quality compliance issues that may have raised the risk ... has just posted an article on the research. ... group found airborne asbestos levels well above OSHA safety ... and 2011. , “Asbestos compliance sampling data associated with ...
(Date:5/24/2015)... NH (PRWEB) May 24, 2015 ... leather, launches “InkGard™ Plus” – a classic, rugged ... the polymer allowing difficult stains, including ink, to ... 16 different colors suitable for corporate, healthcare, hospitality ... in line with EnviroLeather’s goal of developing products ...
(Date:5/24/2015)... (PRWEB) May 24, 2015 The ... ( http://www.testosteronelawsuithub.com/ ) has scheduled its next monthly ... the multidistrict litigation. According to court documents filed ... Illinois, the Conference will be convened on June ... Replacement Therapy Product Liability Litigation - MDL No. ...
(Date:5/24/2015)... ProPin is a set of self-animating ... Utilize ProPin to pin point locations on a map, to ... , ProPin allows users to choose from 30 simplistic presets with ... on-screen controls, video editors can easily manipulate ProPin presets as a ... with absolute ease. , Using ProPin is easy, simply drag a ...
(Date:5/24/2015)... (PRWEB) May 24, 2015 Indiana Fiber ... provider announces Midwest Telecom of America, Inc. (MTA) has ... According to Cory Childs, IFN Enterprise Sales Manager, fiber ... providers. “IFN’s fiber transport provides MTA with the ... to their Tier 1 Internet and voice carriers located ...
Breaking Medicine News(10 mins):Health News:New Analysis Finds Too Many Employers Ignored OSHA Asbestos Guidelines, According to Surviving Mesothelioma 2Health News:EnviroLeather By LDI Launches "InkGard Plus" - Stain Resistant Faux Leather 2Health News:Testosterone Lawsuit Attorneys at Bernstein Liebhard LLP Look Ahead to June Conference in Federal Multidistrict Litigation 2Health News:Testosterone Lawsuit Attorneys at Bernstein Liebhard LLP Look Ahead to June Conference in Federal Multidistrict Litigation 3Health News:Developers at Pixel Film Studios Release ProPin for Final Cut Pro X. 2Health News:Indiana Fiber Network, LLC Enables Midwest Telecom of America with Fiber Route Diversity 2
... more Women in US will start breast feeding their child ... with the benefits of breast feeding//. As the study results ... birth breast fed their children's for the required period compared ... ,Professor Indu B. Ahluwalia and colleagues CDC, Atlanta surveyed ...
... ,Seafoods like fish meat along with mussels, lobster, white ... health option between Indians and foreigners on a time. , ... 3’o clock in the afternoon in the INA market of New ... high on seafood sales from October till February. ,In ...
... seen when Pharma major Wockhardt limited (Thiruvananthapuram) in association with ... vaccine//, marketed the latest vaccine for Hepatitis A. ,Hepatitis ... to be taken to curb the spread of the disease. ... period of almost a month and spreads to humans through ...
... level trainers was inaugurated by the state health secretary - ... to the Accredited Social Health Activists (ASHAs) and recruited under ... of new-born babies and pregnant mothers. ,About 12,730 ... each Anganwadi centres. ,The district level trainers will ...
... safe and tolerable exercise can be given to children's ... have a better heart function//. The study was conducted ... Jonathan Rhodes. ,The study was conducted in ... 17 with severe congenital heart disease and were given ...
... invariably brings joy and excitement to the parents and family ... the birth of baby Maia, after her mother successfully// underwent ... let anything come between her baby and self. ... aggressive and was staged III Hodgkin’s lymphoma. She was required ...
Cached Medicine News:Health News:Increased Fish market enables hike in fish pricing 2Health News:‘Train The Trainers’ Health programme Inaugurate 2Health News:Robotic ovarian transposition helps cancer patient deliver baby 2
(Date:5/22/2015)... CHAPEL HILL, N.C. , May 22, 2015 ... will be hosting its sixth Medical Affairs ... – 12:30PM (EDT) via a virtual roundtable to ... Outcomes Research." Best Practices, Medical Affairs ... for sharing insights about the key challenges they ...
(Date:5/22/2015)... /CNW/ - The Taskforce representing Canada,s ... hard work that the Minister and Health Canada have put ... recognizes the needs of the thalidomide survivors, and more than ... tax free, with annual adjustments for inflation. Certain ... of $100,000 based on the severity of their disability, tax ...
(Date:5/22/2015)... , May 22, 2015  Amgen ... Company has commenced termination of its participation ... with AstraZeneca (LON:AZN, STO:AZN and NYSE: ... is in development for patients with moderate-to-severe ... The decision was based on events of ...
Breaking Medicine Technology:Best Practices Sixth Medical Affairs Consortium Roundtable to Focus on Health Economics & Outcomes Research 2Amgen to terminate participation in co-development and commercialization of brodalumab 2Amgen to terminate participation in co-development and commercialization of brodalumab 3Amgen to terminate participation in co-development and commercialization of brodalumab 4Amgen to terminate participation in co-development and commercialization of brodalumab 5
... generations. Most gels can be dried by positioning ... gel dryer, covering them with wet semi-permeable cellophane ... the cellophane flat. Tut's Tombs also produce great ... somewhat larger than the gel to be dried. ...
... generations. Most gels can be dried by positioning ... gel dryer, covering them with wet semi-permeable cellophane ... the cellophane flat. Tut's Tombs also produce great ... somewhat larger than the gel to be dried. ...
... Slab Gel Dryer accommodates large sequencing gels or multiple ... coated platen for long lasting durability and corrosion resistance., ... , Quick Drying Rate - large sequence ... , Digital display of temperature and time ...
Inquire...
Medicine Products: