Thursday, May 26, 2011

Shocking research

In the news today - sitting on your ass all day can cause you to gain weight. More shocking news at 11.

A new study reveals that the rise in desk jobs over the past 50 years may play a significant role in the obesity epidemic.

Actually, like most of biology, the actual study (in PLoS ONE) is a little more interesting in that they estimate that the

'daily occupation-related energy expenditure has decreased by more than 100 calories (in the last 50 years), and this reduction in energy expenditure accounts for a significant portion of the increase in mean U.S. body weight for women and men over the last 5 decades.'

This is in contrast to previous studies that have largely focused on food consumption.

Also of interest is the note that:

'Our estimation of a reduction of more than 100 calories per day in occupation-related energy expenditure over the last 50 years would have been adequately compensated for by meeting the 2008 federal physical activity recommendations of 150 minutes per week of moderate intensity activity or 75 minutes per week of vigorous intensity activity....when physical activity is assessed with accelerometers the number of Americans that achieve the physical activity recommendations falls to 1 in 20.'

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