Exercise for a Brain Boost
In Exercise & Nutrition, Part I, I was remiss not to have mentioned the brain-related benefits of exercise. This affects everyone, but it’s more noticeable when you’re over forty. At least, I’ve noticed it much more since I passed forty.A recent study showed that with aging and/or impaired mental abilities (like Alzheimer’s Disease), new brain cells still develop, but they die almost instantly. However, the study also showed that with exercise pumping more oxygen and glucose into the brain, new brain cells thrive, new synapses are formed and memory & cognitive ability are as sharp as ever! Another study proved that even very mild exercise stimulates the internal organs as well as the brain through the nerves. Also, walking literally oxygenates your brain. Who knew that taking a walk to clear your head was really the best thing you could do? They also proved that running increases the number of brain cells as well as the quality of those cells and their functioning. The participants included “normal” - those that appear to be in the prime of life and fully functioning, senior citizens and people who are considered (genetically and by standard testing) to be ”slow learners.” Running significantly improved the number of brain cells and the functioning of the brain equally in all three groups.In another study, cognitive abilities were tested in four areas: executive functioning, memory, psychomotor speed and attention/concentration. All participants were senior citizens and retired. Compared to a medicated group, exercisers displayed remarkable improvements in higher mental processes of memory and in “executive functioning” involving organization, planning and jumping from one intellectual task to another and back again quickly. What made the researchers sit up and take notice was that exercise had beneficial effects in specific areas of cognitive functioning … ones in the frontal & prefrontal parts of the brain. The study results imply that we might be able to offset mental decline (associated with old age) with exercise.The cognitive abilities of 6,000 women over 65 were compared and those who walked on a regular basis were much more likely not to experience memory loss or declines in mental functioning.
University of California researchers tested a group of women’s brain functions over an eight year period. Taken into account was each woman’s normal activity level, which included stair-climbing and their normal patterns of walking.
In the higher energy groups, there was much less cognitive decline. The women walking the most (17 miles/week) had much higher test scores and less decline in test scores (17%) compared with women who walked the least (one half-mile/week), who had 24% decline in test scores. But it was not all or nothing. For every extra mile walked/week, the testing showed a 13% less chance of decline in cognitive functions. Evidently, you don’t have to run marathons to see an improvement … in this case, more is better, but a little is still good.
All this, plus, as you may have noticed, exercise can do wonders for your emotions. Sometimes I work myself into a bad mood, cursing everything under the sun. But after 30 or 40 minutes of exercise, I’ve usually forgotten about it … or, at least, forgotten the bad mood.