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Physical fitness improves spatial memory, increases size of brain structure
Date:2/24/2009

ects' left and right hippocampi. They also tested the participants' spatial reasoning.

They found a significant association between an individual's fitness and his or her performance on certain spatial memory tests. There was also a strong correlation between fitness and hippocampus size.

"The higher fit people have a bigger hippocampus, and the people that have more tissue in the hippocampus have a better spatial memory," said U. of I. psychology professor Art Kramer, who led the study with Pittsburgh psychology professor Kirk Erickson.

"Even ignoring the hippocampus data, we see there is this significant and substantial relationship between how fit you are and how good your memory is, or at least a certain kind of memory, a certain kind of memory that we need all the time," Kramer said.

"This is really a clinically significant finding because it supports the notion that your lifestyle choices and behaviors may influence brain shrinkage in old age," Erickson said. "Basically, if you stay fit, you retain key regions of your brain involved in learning and memory."

An impairment of spatial memory "is one of a number of reasons why older people end up losing their independence," Kramer said. "Here is yet more evidence that becoming fit has implications for how well you're going to live your life."


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Contact: Diana Yates, Life Sciences Editor
diya@illinois.edu
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University of Illinois at Urbana-Champaign
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