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Researchers say it's the first study of its kind to look at the effects of exercise on age related brain changes associated with memory loss in the elderly.
Sciences, researchers randomly assigned 120 sedentary adults between the ages of 55 and 80 into one of two groups. One group began an aerobic exercise program of walking around a track for 40 minutes a day, three days a week; a comparison group limited exercise to stretching and toning exercise.
"Such improvements have important implications for the health of our citizens and the expanding population of older adults worldwide."
Exercise May Slow Age
"The results of our study are particularly interesting in that they suggest that even modest amounts of exercise by sedentary older adults can lead to substantial improvements in memory and brain health," says researcher Art Kramer, director of the Beckman Institute at the University of Louis Vuitton Limited Edition Wallet
A new study suggests moderate aerobic exercise may slow or even reverse age related memory loss in older adults by increasing the size of the hippocampus, a part of the brain that assists in forming memories.
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Exercise and the BrainIn the study, published in the Proceedings of the National Academy of Lv Wallet Black
"We think of the atrophy of the hippocampus in later life as almost inevitable," says researcher Kirk Erickson, professor of psychology at the University of Pittsburgh, in a news release. "But we've shown that even moderate exercise for one year can increase the size of that structure. The brain at that stage remains modifiable."
Researchers say they also found increases in several markers associated with brain health, such as brain derived neurotropic factor (BDNF) that corresponded with the increase in hippocampus volume.
In contrast, these regions decreased in volume in the comparison group by 1.40% and 1.43%, respectively.
The volume of the hippocampus may shrink and lead to memory impairment in the elderly. But researchers found one year of moderate aerobic exercise, like walking, in a group of older adults increased the volume of hippocampus by 2%, which effectively reversed the age associated shrinkage by one to two years.
Tests of spatial memory function also showed improvements in the aerobic exercise group associated with this increase in hippocampus volume.
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Brain scans taken at the start of the study and again one year later showed that the right and left sides of the hippocampus increased by 2.12% and 1.97%, respectively, in the aerobic exercise group.
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