Older adults who walk more than six miles a week (one mile a day) preserve brain volume and cognitive status better than sedentary adults, according to a study published in Neurology by the University of Pittsburgh, Pennsylvania. They studied older adults, and their walking patterns. Nine years after the initial assessment, MRI was used to assess brain volume, and four years after this, the participants cognitive skills were measured.
Participants who walked 6 - 9 miles a week had more gray matter than those who walked less. These same walkers had a two-fold reduced risk for cognitive impairment.
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