Twenty small minutes of exercise per day would be sufficient to improve the memory of the 50 years and more, reveal an Australian survey published in the Newspaper of the American Medical Association (JAMA).
The researchers of the university of Melbourne recruited 138 volunteers, men and women of 50 years and more, that complained about memory losses, but that were not for affected as much by the illness of Alzheimer nor any other shape of craziness.
They proposed half among them to take to 150 minutes of exercise curbed per week (what is equivalent to three weekly sessions of 50 minutes, or about twenty minutes per day). The walk, the swimming or the social dance were part of the activities practiced.
The 138 participants underwent a cognitive exam aiming to value their memory to quite the beginning of the project, and again six months later. On average, those to that one had proposed to make the exercise had improved their result of 1,04 point, on a scale 70. The other had lost 0,26 point on average.
Past the cape of about fifty, the adepts of the walk and sport would have more easiness therefore to keep their list of grocery store, to remember birthdays or to put a name on a face. Besides, they could be protected more against the illness of Alzheimer and the other shapes of craziness, believe the researchers.
The physiological phenomena that hide behind these results stay mysterious, although several hypotheses are advanced. One knows for example that the exercise increases the rate of oxygen in blood. However, a very oxygenated brain is necessarily more efficient.
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