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Fitness Theory and Practice. CrossFit's rationale & foundations. Who is fit? What is fitness?

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Old 08-18-2010, 01:39 PM   #1
Ben Clark
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muscle mass and health

Does anybody know of any solid data correlating amount of muscle mass with health and longevity? All I can google up is a gazillion bodybuilding sites suggesting that because pathological sarcopenia does happen to some people everybody should add as much mass as possible now. I don't think it takes much existing muscle mass or much exercise to avoid serious sarcopenia.

On the other hand Calorie Restriction shows some positive results and those people are sticks.
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Old 08-18-2010, 01:44 PM   #2
Jamie J. Skibicki
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Re: muscle mass and health

I'm compelled to ask why.
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Old 08-18-2010, 02:07 PM   #3
Ben Clark
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Re: muscle mass and health

How could anybody NOT want to know?

Maybe that actually answers the question. If there were any good data everybody would know.
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Old 08-18-2010, 02:09 PM   #4
Jamie J. Skibicki
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Re: muscle mass and health

I don't care. I don't want a 500 lb back squat because I think it will help me when I'm 80, I want it because I want it and it a cool party trick, helps me in judo and weightlifting and life is all about hip drive.
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Old 08-18-2010, 02:11 PM   #5
Shane Skowron
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Re: muscle mass and health

There is an inverse correlation between strength and mortality rates in adult men.

http://www.bmj.com/cgi/reprint/337/jul01_2/a439 (wfs)


Get stronger, live longer.


Although to be honest I don't really care about living a long life.

Last edited by Shane Skowron : 08-18-2010 at 02:14 PM.
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Old 08-18-2010, 02:48 PM   #6
Ben Clark
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Re: muscle mass and health

Thanks a lot Shane. I'd heard of that but never had a link to it.

A quick look at the results seems to show that the best place to be is high CV fitness and at least medium strength. The medium third in strength were much better off than the bottom but not much worse off than the strongest third.

I could have it wrong. I can nerd out on this data for days.
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Old 08-18-2010, 03:34 PM   #7
Mike Mallory
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Re: muscle mass and health

muscle mass is the primary biomarker of aging, but that's not necessarily an argument to get as huge as you can.
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Old 08-18-2010, 03:42 PM   #8
Thomas Green
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Re: muscle mass and health

Quote:
Originally Posted by Shane Skowron View Post
There is an inverse correlation between strength and mortality rates in adult men.

http://www.bmj.com/cgi/reprint/337/jul01_2/a439 (wfs)


Get stronger, live longer.


Although to be honest I don't really care about living a long life.

You rowed a marathon? God damn
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Old 08-18-2010, 04:10 PM   #9
Brian O'Laughlin
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Re: muscle mass and health

Hi Ben.

A search on pubmed ( http://www.ncbi.nlm.nih.gov/pubmed WFS) finds some relevant matches, including the one cited above (all WFS):

http://www.ncbi.nlm.nih.gov/pubmed/12192731

http://www.ncbi.nlm.nih.gov/pubmed/19451772 (no abstract)


And wrt disease survival:

http://www.ncbi.nlm.nih.gov/pubmed/19366909

http://www.ncbi.nlm.nih.gov/pubmed/20550712

http://www.ncbi.nlm.nih.gov/pubmed/20195176

http://www.ncbi.nlm.nih.gov/pubmed/2291031

http://www.ncbi.nlm.nih.gov/pubmed/1409482


The Executive Summary seems to be that exercise increases survival rates in the diseases they studied.
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Old 08-18-2010, 04:33 PM   #10
Ben Clark
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Re: muscle mass and health

thanks Brian

Very interesting that the cooper cancer study is also set up in thirds and also shows the bottom third getting hit hardest with much less difference between the top and middle.

I think what we see here is that being weak is a hazard much more than that getting particularly strong is an advantage.

ie, a xfitter running SS would gain little or no health advantage based on this data.
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