Can I exercise after lunch?

Twice as good: exercise after eating

For their study, the researchers examined a total of twelve participants how exercise after eating affects the feeling of hunger, the amount eaten at the next meal and the production of certain messenger substances. The test subjects all ate a standardized breakfast. Then half exercised for an hour while the other half sat still.

After another hour, the participants were allowed to eat as much as they wanted. In the test subjects who did sport, the researchers measured an increase in the amount of messenger substances that signal the brain that the stomach is full during and after the exercises. Consistent with this, the test participants reported that they were less hungry during this period.

At the next meal they still ate more than those who did not have to do any exercises. But since the energy consumption of those doing sports was two and a half times higher than that of the control persons, the overall calorie balance was still more favorable. The scientists refute the fear that the positive effect of sport on the calorie balance is canceled out by eating more afterwards. Since the study has so far only been carried out with twelve test persons, the researchers now want to repeat it with more participants in order to confirm the observed effects.

Denise Robertson (University of Surrey) et al .: Journal of Endocrinology, Vol. 193, p. 251 ddp /, Tobias Becker


June 5, 2007