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Old February 4 2013, 01:28 AM   #74
stj
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Re: Obesity linked to a gut bacteria

If intestinal bacteia play a role in obesity, shouldn't different kinds of bacteria play a role in nmalnutrition? I should think so. Thus, this article is interesting: http://www.newscientist.com/article/...nutrition.html

Pingfah wrote: View Post
I was under the impression that burning fat (turning it into energy) and building muscle are two separate things.
The energy for exercise has to come from somewhere. If you've restricted your caloric intake, some of the fat will be used (though as far as I know to replace the calories from the carbohydrates, which are more quickly used.) But that is the only connection. Without caloric restriction, exercise doesn't burn enough fat to cause weight loss. Sorry I didn't make that clear.

Certainly all the rowing and walking I do has never helped me build muscle (it did help me lose weight though, not that I had a great deal to lose), building muscle didn't happen until I started to lift weights, and increase the amount of weight I was lifting incrementally, and I didn't need any fat to convert to achieve that.
No, you also needed protein to build muscle. You probably increased your caloric intake to do this. This site, http://www.nutristrategy.com/activitylist4.htmur, estimates that a 205 lb. person vigously rowing an exercise machine will burn 791 calories. Per hour. This site, http://www.fitwatch.com/phpscripts/v...egetable%20oil, estimates that a large french fries is 578 calories.

An hour of vigorous rowing 3/4ths undone by one fast food side? This numerical disparity between calories burned by exercise and intake is why exercise plays no important role in losing weight. It's diet. Exercise (and protein) plays a role in building muscle. The people who connect exercise and weight loss (the majority of the posters if you look back) are the ones connecting the two. In your personal anecdote, I'd say either you spend hours exercising or your diet was already restricted to barely enough calories to maintain your weight. Long hours of exercise do wear on the joints.

Venardhi wrote: View Post
That would be the correct impression.
In addition to the role that fat provides in powering the muscular activity in the first place, there is another connection, which is the tendency for people who have gained weight under a muscular building regimen, to have their weight remain in the form of fat when they end close adherence to their program. Fortunately this is not universal.

Deckerd wrote: View Post
Yeah I'm calling stj's post mostly non-factual.
Since you apparently don't understand the point about the numbers not adding up, your opinion just comes off as innumerate.

Robert Maxwell wrote: View Post
I'd actually never heard before that exercise doesn't burn fat.
You haven't now either. I wrote:
The problem is that only extremely large amounts of exercise or many hours of heavy physical labor to burn enough calories to make a difference. The numbers just don't add up, and the simplistic thinking is to imagine the numbers don't matter. The only practical way for the vast majority of people to make exercise burn enough calories to make a difference is to first restrict caloric intake.
To finish up:

I would assume that if you either keep your caloric intake the same or reduce it, but add exercise, you are burning more calories than you did before. Worst case (if you still have a caloric surplus), you are converting less of it into fat. Best case, you are burning fat because you have a caloric deficit. Exercise damages the muscle fibers, and protein intake repairs them and builds more.

Am I wrong or isn't that basically the process?
Of course that's basically the process. (I'm not going to quibble about any difference between damage and stress, or the role of steroids.) Again, the thing is, the numbers don't add up. Exercise just doesn't burn enough calories to play a significant role. Except for water weight loss, which can be quite encouraging in successfully restricting diet.

Come to think of it, exercise time isn't spent eating, so there's that aspect too. But that's not what anyone has been talking about either.
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Last edited by stj; February 4 2013 at 01:59 AM.
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