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:10/30/2014)... October 30, 2014 Five months after ... Hodgkinson Street LLC announces new branding and a website ... Mepham . After David Mepham’s promotion to name partner ... and website to include Mepham’s name and better reflect ... and mediation firm, the decision to implement new branding ...
(Date:10/30/2014)... Haelle HealthDay Reporter , ... 100 genes have been identified that appear linked to ... researchers say they are on their way to discovering ... the disorder. Autism spectrum disorders include a range ... and repetitive behaviors. An estimated one in 68 U.S. ...
(Date:10/30/2014)... Global prebiotics market is expected to reach ... study by Grand View Research, Inc. Positive outlook on ... fat free products owing to increased concerns over obesity ... the forecast period. , View full report with TOC ... was the largest application segment with market volume of ...
(Date:10/30/2014)... The Woodlands, TX (PRWEB) October 30, 2014 ... hospital system, released today its 2014 third quarter ... hospitals across Texas boasted infection rates of only ... also reported patient satisfaction scores exceeding 98 percent. ... this past quarter, which included rising satisfaction scores,” ...
(Date:10/30/2014)... Dennis Thompson HealthDay Reporter ... lots of milk could be bad for your health, a ... calcium in milk can help strengthen bones and prevent osteoporosis. ... to recommend milk as part of a healthy diet. ... milk did not protect men or women from bone fractures, ...
Breaking Medicine News(10 mins):Health News:Hodgkinson Street Mepham Rebrands 2Health News:Discovery of 100-Plus Genes Tied to Autism May Improve Treatments 2Health News:Discovery of 100-Plus Genes Tied to Autism May Improve Treatments 3Health News:Prebiotics Market Is Expected To Grow At A CAGR Of 9.3% From 2014 To 2020: Grand View Research, Inc. 2Health News:Prebiotics Market Is Expected To Grow At A CAGR Of 9.3% From 2014 To 2020: Grand View Research, Inc. 3Health News:Prebiotics Market Is Expected To Grow At A CAGR Of 9.3% From 2014 To 2020: Grand View Research, Inc. 4Health News:Prebiotics Market Is Expected To Grow At A CAGR Of 9.3% From 2014 To 2020: Grand View Research, Inc. 5Health News:Victory Healthcare Releases Q3 Satisfaction, Infection Rates 2Health News:Victory Healthcare Releases Q3 Satisfaction, Infection Rates 3Health News:Is Milk Your Friend or Foe? 2Health News:Is Milk Your Friend or Foe? 3
... , PITTSBURGH, July 27 Childhood obesity ... adults and can lead to premature death in adulthood due ... In addition to its significant human toll, childhood obesity alone ... , , To address the continued tide ...
... survey of men who opt out of aggressive treatment ... delay treatment for their early prostate cancer are not ... research shows. , The evidence seems to contradict the ... for most patients, according to Dr. Roderick van den ...
... YORK, July 27 Paradigm Spine, LLC, a developer of ... a $21.5 million financing, consisting of a $15mm debt facility ... lender in the $15mm venture debt funding. The $6.5 ... asset management group specializing in high-growth opportunities, and Trevi Health ...
... ... upcoming Materials and Processes for Medical Devices Conference , Aug. 10-12 at the Hilton ... (Vocus) July 27, ... upcoming Materials and Processes for Medical Devices Conference , Aug. 10-12 at the Hilton ...
... , , , ... tell people,s personalities based on the types of drink they enjoy. ... as sweet and indulgent, while someone who likes fruity drinks could be ... Angeles-based BLD & Grace Restaurants says the same could be said for ...
... Spanish . Capsule endoscopy for exploring ... all lesions located by means of conventional colonoscopy. According to ... Medicine the specialised medical journal with greatest international ... achieve similar efficacy to the conventional procedure undertaken with a ...
Cached Medicine News:Health News:Highmark Provides Pediatricians With Resources to Combat Childhood Obesity 2Health News:Highmark Provides Pediatricians With Resources to Combat Childhood Obesity 3Health News:Most Not Worried by Delayed Prostate Cancer Therapy 2Health News:Paradigm Spine Closes $21.5 Million Financing and Announces Promotion of Matt Stuttle to Position of Vice President, US Sales 2Health News:Paradigm Spine Closes $21.5 Million Financing and Announces Promotion of Matt Stuttle to Position of Vice President, US Sales 3Health News:Minnesotans to Keynote Materials for Medical Devices Conference 2Health News:Personality in a Cup 2Health News:Personality in a Cup 3Health News:Colon capsule endoscopy diagnoses 64 percent of total polyps detected by conventional colonoscopy 2Health News:Colon capsule endoscopy diagnoses 64 percent of total polyps detected by conventional colonoscopy 3Health News:Colon capsule endoscopy diagnoses 64 percent of total polyps detected by conventional colonoscopy 4Health News:Colon capsule endoscopy diagnoses 64 percent of total polyps detected by conventional colonoscopy 5
(Date:10/30/2014)... 30, 2014 , La ... contribuye a adquirir tolerancia a la proteína de ... proteína de la leche de la vaca (APLV) es la ... Hasta ahora, la APLV se trataba eliminando las ... demostrado que es posible adquirir tolerancia oral en ...
(Date:10/30/2014)... SAN FRANCISCO , Oct. 30, 2014 /PRNewswire/ ... rehydration solution (ORS), announced that it was awarded ... the leading healthcare services company that serves the ... Inc., UHC, Children,s Hospital Association and Provista.  ... designation based on feedback from member hospitals who ...
(Date:10/30/2014)... , Oct. 29, 2014 nebulizer is ... disorders (asthma, COPD and cystic fibrosis) that converts liquid ... easily reach into the lungs of a patient when ... global nebulizers market is dominated by various devices powered ... increasing prevalence of asthma, COPD and cystic fibrosis and ...
Breaking Medicine Technology:Según expertos reunidos en el Simposio Allergy Day 2Según expertos reunidos en el Simposio Allergy Day 3DripDrop Partners With Novation To Help Hospitals Address I.V. Saline Solution Shortages; ORS Product Used For Ebola Outbreak 2DripDrop Partners With Novation To Help Hospitals Address I.V. Saline Solution Shortages; ORS Product Used For Ebola Outbreak 3DripDrop Partners With Novation To Help Hospitals Address I.V. Saline Solution Shortages; ORS Product Used For Ebola Outbreak 4Nebulizers Market (Pneumatic Nebulizers, Ultrasonic Nebulizers and Mesh Nebulizers) - Global Industry Analysis, Size, Share, Growth, Trends and Forecast, 2013 - 2019 2Nebulizers Market (Pneumatic Nebulizers, Ultrasonic Nebulizers and Mesh Nebulizers) - Global Industry Analysis, Size, Share, Growth, Trends and Forecast, 2013 - 2019 3
... 2010 Palatin Technologies, Inc. (NYSE Amex: PTN ... (the "Exchange"), advising Palatin that it is not in compliance ... Section 1003 of the Exchange,s Company Guide. In ... not in compliance with Section 1003(a)(iii) of the Company Guide ...
... 2, 2010 The Harley Medical Group is reporting a ... as an early present for themselves, the month before Christmas. ... to ensure a full recovery is made before they return ... procedures for Christmas 2010 include: Breast enlargement , Nose ...
Cached Medicine Technology:Palatin Technologies Receives Non-Compliance Letter from NYSE Amex 2Palatin Technologies Receives Non-Compliance Letter from NYSE Amex 3The Harley Medical Group Sees an Uptake in Surgery Bookings for Christmas 2
... ARUP Laboratories is a national reference ... laboratory research and development. ARUP offers an ... unique medical tests in clinical and anatomic ... ARUP Laboratories' clients include more than half ...
... Laboratories is a national reference laboratory and ... and development. ARUP offers an extensive test ... tests in clinical and anatomic pathology. Owned ... clients include more than half of the ...
... a national reference laboratory and a worldwide ... ARUP offers an extensive test menu of ... clinical and anatomic pathology. Owned by the ... more than half of the nation's university ...
... a national reference laboratory and a worldwide ... ARUP offers an extensive test menu of ... clinical and anatomic pathology. Owned by the ... more than half of the nation's university ...
Medicine Products: