Older Adults: Build Muscle and You’ll Live Longer

Posted by on March 18, 2014 in Health, Longevity & Life Extension with 2 Comments
Print Friendly, PDF & Email

Sciencedaily | March 14th 2014

body builder oldNew UCLA research suggests that the more muscle mass older Americans have, the less likely they are to die prematurely. The findings add to the growing evidence that overall body composition — and not the widely used body mass index, or BMI — is a better predictor of all-cause mortality.

The study, published in the American Journal of Medicine, is the culmination of previous UCLA research led by Dr. Preethi Srikanthan, an assistant clinical professor in the endocrinology division at the David Geffen School of Medicine at UCLA, that found that building muscle mass is important in decreasing metabolic risk.


“As there is no gold-standard measure of body composition, several studies have addressed this question using different measurement techniques and have obtained different results,” Srikanthan said. “So many studies on the mortality impact of obesity focus on BMI. Our study indicates that clinicians need to be focusing on ways to improve body composition, rather than on BMI alone, when counseling older adults on preventative health behaviors.”

The researchers analyzed data collected by the National Health and Nutrition Examination Survey (NHANES) III, conducted between 1988 and 1994. They focused on a group of 3,659 individuals that included men who were 55 or older and women who were 65 or older at the time of the survey. The authors then determined how many of those individuals had died from natural causes based on a follow-up survey done in 2004.

The body composition of the study subjects was measured using bioelectrical impedance, which involves running an electrical current through the body. Muscle allows the current to pass more easily than fat does, due to muscle’s water content. In this way, the researchers could determine a muscle mass index — the amount of muscle relative to height — similar to a body mass index. They looked at how this muscle mass index was related to the risk of death. They found that all-cause mortality was significantly lower in the fourth quartile of muscle mass index compared with the first quartile.

“In other words, the greater your muscle mass, the lower your risk of death,” said Dr. Arun Karlamangla, an associate professor in the geriatrics division at the Geffen School and the study’s co-author. “Thus, rather than worrying about weight or body mass index, we should be trying to maximize and maintain muscle mass.”

This study does have some limitations. For instance, one cannot definitively establish a cause-and-effect relationship between muscle mass and survival using a cohort study such as NHANES III. “But we can say that muscle mass seems to be an important predictor of risk of death,” Srikanthan said. In addition, bioelectrical impedance is not the most advanced measurement technique, though the NHANES III measurements were conducted in a very rigorous fashion “and practically, this is the best situation possible in a study of this size,” she noted.

[read full post here]

Tags: , ,

Subscribe

If you enjoyed this article, subscribe now to receive more just like it.

Subscribe via RSS FeedConnect on YouTube

2 Reader Comments

Trackback URL Comments RSS Feed

  1. Awesome blog! Is your theme custom made or did
    you download it from somewhere? A design like yours with a few simple tweeks would
    really make my blog stand out. Please let me know where you got your theme.
    Thanks a lot

  2. I seldom leave responses, but i did some searching and
    wound up here Older Adults: Build Muscle and You

Leave a Reply

Your email address will not be published. Required fields are marked *

FAIR USE NOTICE. Many of the stories on this site contain copyrighted material whose use has not been specifically authorized by the copyright owner. We are making this material available in an effort to advance the understanding of environmental issues, human rights, economic and political democracy, and issues of social justice. We believe this constitutes a 'fair use' of the copyrighted material as provided for in Section 107 of the US Copyright Law which contains a list of the various purposes for which the reproduction of a particular work may be considered fair, such as criticism, comment, news reporting, teaching, scholarship, and research. If you wish to use such copyrighted material for purposes of your own that go beyond 'fair use'...you must obtain permission from the copyright owner. And, if you are a copyright owner who wishes to have your content removed, let us know via the "Contact Us" link at the top of the site, and we will promptly remove it.

The information on this site is provided for educational and entertainment purposes only. It is not intended as a substitute for professional advice of any kind. Conscious Life News assumes no responsibility for the use or misuse of this material. Your use of this website indicates your agreement to these terms.

Paid advertising on Conscious Life News may not represent the views and opinions of this website and its contributors. No endorsement of products and services advertised is either expressed or implied.
Top

Send this to friend