Tue, Sep-06-05, 14:44
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Experimenter
Posts: 25,865
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Plan: DDF
Stats: 202/185.4/179
BF:
Progress: 72%
Location: San Diego, CA
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I don't think your test really shows it. Whenever you diet you always lose a lot of water weight at first. Especially if you're going lower carb. And yes, its about the first three days all that water whooshes off. Weight loss isn't linear, especially if you're female.
And the effect is limited. Some people would have you think if you lowered your calories enough you wouldn't lose weight at all, which is preposterous.
And lastly, no one knows at what point your body starts to conserve energy, or even exactly how, or why. It could be that people who think they aren't limiting calories simply because they don't count them, actually are. It might be that low carb also sends the body into "starvation mode" or it could be that starvation mode is actually insignificant unless you're restricting your calories to insanely small levels for a long period of time.
The other thing is, the effect of a lowered metabolism isn't permanent according to an article recently published and quoted in the media area. Although, I suspect people don't realize that being much lighter they don't require as many calories each day. Also, if you diet poorly and don't eat enough protein you will lose muscle mass and that will also cause you to require less calories.
Does calorie restriction permanently poop up your metabolism?
This study suggests no:
http://www.ncbi.nlm.nih.gov/entrez/...3&dopt=Citation
Quote:
There is growing concern that dieting may adversely affect the metabolic rate and exacerbate efforts to control weight. In this study we measured the resting metabolic rate nine times over 48 weeks in 18 obese women (108.0 +/- 3.1 kg) who were randomly assigned to one of two dietary conditions. Nine patients consumed approximately 5021 kJ/d (1200 kcal/d) throughout the 48 weeks, while the other nine consumed a 1757-kJ/d (420-kcal/d) diet for 16 of the first 17 weeks and a conventional reducing diet for the remainder of treatment. All patients increased their physical activity, primarily by walking. During the first 5 weeks, the fall in metabolic rate was more than double the relative reduction in weight. By contrast, at week 48, the metabolic rate of patients in the two conditions was reduced by 9.4% +/- 4.0% and 8.3% +/- 2.2%, respectively, while weight was reduced by 16.6% +/- 2.7% and 19.5% +/- 2.7%, respectively. Thus, neither dietary regimen, combined with modest physical activity, was associated with long-term reductions in resting metabolic rate that exceeded decreases anticipated with the achievement of a lower body weight.
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And another study: http://www.ajcn.org/cgi/content/abstract/49/5/745
I found searching scholar.google.net using "low calorie diet" was the best results.
Last edited by Nancy LC : Tue, Sep-06-05 at 15:36.
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