. . . .Over all, in fact, the researchers concluded, someone who stood up while working instead of sitting would burn about 8 or 9 extra calories per hour. (Just for comparison, a single cup of coffee with cream and sugar contains around 50 calories.)
But walking was a different matter. When the volunteers walked for 15 minutes, even at a fairly easy pace, they burned about three times as many calories as when they sat or stood. If they walked for an hour, the researchers calculated, they would incinerate about 130 more calories than if they stayed in their chairs or stood up at their desks, an added energy expenditure that might be sufficient, they write, to help people avoid creeping, yearly weight gain.
The upshot of this experiment is that if your goal is to control your weight at work, then “standing up may not be enough,” said Seth Creasy, a graduate student at the University of Pittsburgh and the lead author of the new study.