A study published in the March 13 edition of Psychological Medicine, found that lifelong exercise improved cognitive function at age 50. This study has some interesting aspects. One is that it is longitudinal: data was collected through face-to-face interviews at the ages of 11, 16, 33, 42, 46 and 50, thus reducing the risk of recall bias. Those who exercised weekly as a child and continued to do so as an adult performed better on tests of memory, learning, attention and reasoning at the age of 50 than those who exercised two to three times per month or less. There was also an association between the more intense the exercise, the better the person performed on cognitive tests. The greatest benefit emerged from participating in lifelong intensive exercise.
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