Can Exercise Make Kids Smarter?
In an experiment published last month, researchers recruited schoolchildren, ages 9 and 10, who lived near the Champaign-Urbana campus of the University of Illinois and asked them to run on a treadmill. The researchers were hoping to learn more about
however how fitness affects the immature human brain.
Animal studies had already established that, when given access to running wheels, baby rodents bulked up their brains, enlarging certain areas and subsequently outperforming sedentary pups on rodent intelligence tests. But studies of the effect of exercise on the actual shape and function of children’s brains had not yet been tried.
So the researchers sorted the children, based on their treadmill runs, intohighest-, lowest- and median-fit categories. Only the most- and least-fit groups continued in the study (to provide the greatest contrast). Both groups completed a series of cognitive challenges involving watching directional arrows on a computer screen and pushing certain keys in order to test how well the children filter out unnecessary information and attend to relevant cues.
Finally, the children’s brains were scanned, using magnetic resonance imaging technology to
however measure the volume of specific areas.
