Even Light Exercise Keeps Your Memory Sharp
By Laurie Tarkan | August 2, 2011
From www.bnet.com
Being forgetful is a dreaded affliction of middle age–having words on the tip of your tongue and forgetting what you were just about to say–but it turns out that it doesn’t take much effort to stave off the effects of aging on your memory and your mind. A growing body of research shows that you can slow the progression of memory loss and dementia by regular light exercise, like by walking or gardening. You don’t have to do moderate to high intensity exercise to get the oxygen flowing to your brain. So if you needed a tad more motivation to walk to work or exercise during your lunch break, here it is:
Go for a walk
In one study published in Archives of Internal Medicine, researchers at the University of Waterloo in Ontario measured the energy expenditure and cognitive functioning of elderly adults for two to five years. The “active” adults did not exercise, but instead did things like walking around the block, gardening and cleaning. But this moderate activity protected them from cognitive decline over several years compared to people who were more sedentary. About 90 percent of those with the greatest daily activity could think and remember just about as well over the course of the study.
Prevent brain shrinkage
Another recent study found that exercise counteracts brain shrinkage that occurs with age. The hippocampus “shrinks” in late adulthood, and this reduced volume is associated with impaired memory and increased risk of dementia, explained Dr. Eric B. Larson, the study’s author. But his study found that hippocampal volume increased by 2% compared with declines in the control groups.
Not Just For The Elderly
One study published in the Journal of Sports Science and Medicine looked at young adults ranging in age from 19 to 29 and found that those who did moderate exercise five times a week for 30 minutes had enhanced memory compared to those who didn’t exercise as much.
Lift Dumbbells
If you can’t get out and walk, strength training may be just as effective. Another study published this month in Neurobiology of Aging found that weight training improved how older women think and changed how blood flows within their brains. Women who lifted weights twice a week for 12 months performed significantly better on mental processing tests than a control group.
“Exercise may turn out to be as close as we can come to the long-sought fountain of youth, and exercise, particularly walking, has no significant adverse effects,” wrote Dr. Larson.
Do you feel your brain works better when you exercise regularly?
MY THOUGHTS
I have to admit that my brain seems to function better when I exercise. When I'm sedentary, my brain seems to switch off, too.
