Even Moderate Physical Activity Helps Elder Adults Stay Mentally Strong

by Vishnuprasad on  August 25, 2015 at 7:22 PM Senior Health News
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Older adults who regularly engage in moderate to vigorous physical activity perform better in mental tasks as they are more flexible in terms of brain functions, a new study says.
Even Moderate Physical Activity Helps Elder Adults Stay Mentally Strong
Even Moderate Physical Activity Helps Elder Adults Stay Mentally Strong
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The findings could soon help doctors determine how physically active you are simply by imaging your brain.

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"We looked at 100 adults between the ages of 60 and 80, and we used accelerometres to objectively measure their physical activity over a week," said one of the lead researchers Agnieszka Burzynska, professor at Colorado State University in the US.

The researchers also used functional magnetic resonance imaging (MRI) to observe how blood oxygen levels changed in the brain over time, reflecting each participant's brain activity at rest.

They evaluated the microscopic integrity of each person's white-matter fibers, which carry nerve impulses and interconnect the brain.

"We found that spontaneous brain activity showed more moment-to-moment fluctuations in the more-active adults," Burzynska noted.

"In a previous study, we showed that in some of the same regions of the brain, those people who have higher brain variability also performed better on complex cognitive tasks, especially on intelligence tasks and memory," Burzynska pointed out.

The researchers also found that, on average, older adults who were more active had better white-matter structure than their less-active peers.

The new findings were reported in the journal PLOS ONE.

Source: IANS
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