About My Health Careers Internship MedBlogs Contact us

Here's Why Ageing Causes Muscles To Loosen Up

by Tanya Thomas on September 15, 2009 at 10:07 AM
Font : A-A+

 Here's Why Ageing Causes Muscles To Loosen Up

Researchers in Nottingham now can put their fingers on why exactly even the most well-built of people tend to loose their muscles and develop thinner arms and legs as they get older.

As age catches up, it becomes harder to keep our muscles healthy-they get smaller, which decreases strength and increases the likelihood of falls and fractures.


The researchers have already shown that when older people eat, they cannot make muscle as fast as the young, and now they have found that the suppression of muscle breakdown, which also happens during feeding, is blunted with age.

Led by Michael Rennie, the scientists and doctors at The University of Nottingham Schools of Graduate Entry Medicine and Biomedical Sciences, believe that a 'double whammy' affects people aged over 65.

But the team think that weight training may "rejuvenate" muscle blood flow, and help retain muscle for older people.

The study's results may explain the ongoing loss of muscle in older people- when they eat they do not build enough muscle with the protein in food and also, the insulin (a hormone released during a meal) fails to shut down the muscle breakdown that rises between meals and overnight.

Normally, in young people, insulin acts to slow muscle breakdown.

These problems could be a result of a failure to deliver nutrients and hormones to muscle because of a poorer blood supply.

In the study, the researchers compared one group of people in their late 60s to a group of 25-year-olds, with equal numbers of men and women.

Professor Rennie said: "The results were clear. The younger people's muscles were able to use insulin we gave to stop the muscle breakdown, which had increased during the night. The muscles in the older people could not."

"In the course of our tests, we also noticed that the blood flow in the leg was greater in the younger people than the older ones. This set us thinking: maybe the rate of supply of nutrients and hormones is lower in the older people? This could explain the wasting we see," he added.

Later, Beth Phillips, a PhD student working with Rennie, confirmed the blunting effect of age on leg blood flow after feeding, with and without exercise.

The team predicted that weight training would reduce this blunting.

"Indeed, she found that three sessions a week over 20 weeks 'rejuvenated' the leg blood flow responses of the older people. They became identical to those in the young," said Rennie.

The study has been published in The American Journal of Clinical Nutrition.

Source: ANI

News A-Z
News Category
What's New on Medindia
Can Adjusting Fatty Acid Intake Improve Mood in Bipolar Disorder Patients?
Insulin Resistance Doubles the Risk of Major Depressive Disorder
Emotional Healing
View all

Medindia Newsletters Subscribe to our Free Newsletters!
Terms & Conditions and Privacy Policy.

More News on:
Anti-ageing and Benefits of Red Wine Ageing and Sleep Ageing Dystonia 

Recommended Reading
Anti-Ageing and Benefits of Red Wine
Ageing process has always been an enigma. Recent research indicates that red wine could delay the .....
Quiz on Ageing
There are several myths associated with ageing and one such myth doing the rounds is that pain is a ...
'Molecular GPS' To Probe Ageing Developed
Michigan researchers have developed a powerful new GPS-like tool to identify proteins that are ......
Chinese Women Opt for Expensive Sheep Liver Cell Therapy to Fight Ageing
Chinese media report that ten women in their forties are traveling to Switzerland for a ......
Ageing and Sleep
Sleep is a barometer of good health in the elderly. Sleep problems in the elderly are controlled by ...
Dystonia is a neurological condition in which the patient experiences involuntary muscle contraction...

Disclaimer - All information and content on this site are for information and educational purposes only. The information should not be used for either diagnosis or treatment or both for any health related problem or disease. Always seek the advice of a qualified physician for medical diagnosis and treatment. Full Disclaimer

© All Rights Reserved 1997 - 2021

This site uses cookies to deliver our services. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Use