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I considered posting this in biology, but think this needs broader dissemination, having appeared in Science and all. I've been saying this for years, but never realized I could get published in Science for it! I'm seriously questioning the quality of that journal to consider this cutting edge research. (No, this isn't a joke.)
Science, Vol 307, Issue 5709, 584-586 , 28 January 2005
Full article: http://www.sciencemag.org/cgi/content/full/307/5709/584
So, there you have it, according to Science, lean people don't sit on their butt as much as obese people. I'm sure you're all relieved to know it's no longer idle speculation, and the official results are in.
Science, Vol 307, Issue 5709, 584-586 , 28 January 2005
Interindividual Variation in Posture Allocation: Possible Role in Human Obesity
James A. Levine,* Lorraine M. Lanningham-Foster, Shelly K. McCrady, Alisa C. Krizan, Leslie R. Olson, Paul H. Kane, Michael D. Jensen, Matthew M. Clark
Obesity occurs when energy intake exceeds energy expenditure. Humans expend energy through purposeful exercise and through changes in posture and movement that are associated with the routines of daily life [called nonexercise activity thermogenesis (NEAT)]. To examine NEAT's role in obesity, we recruited 10 lean and 10 mildly obese sedentary volunteers and measured their body postures and movements every half-second for 10 days. Obese individuals were seated, on average, 2 hours longer per day than lean individuals. Posture allocation did not change when the obese individuals lost weight or when lean individuals gained weight, suggesting that it is biologically determined. If obese individuals adopted the NEAT-enhanced behaviors of their lean counterparts, they might expend an additional 350 calories (kcal) per day.
Full article: http://www.sciencemag.org/cgi/content/full/307/5709/584
So, there you have it, according to Science, lean people don't sit on their butt as much as obese people. I'm sure you're all relieved to know it's no longer idle speculation, and the official results are in.