Yes, if you have strong legs, you are on the right track. A study by scientists at King's College London, England found that having your legs fit, with muscle, is associated with "a positive level of aging in the brain." In other words, the greater strength in the legs, the better mental health in the long term.
The research, published by Gerontology, but reviewed by the website of the English university center, explains that "the findings suggest that simple interventions such as increasing the time we walk, aiming to strengthen the legs, in the long term may have an impact at [level] of healthy mental development”.
Scientists studied 324 twin women, for 10 years. Thus they measured health indicators such as their lifestyle. The article states that the researchers were able to control the genetic factors that affected cognitive functions.
What was the most interesting thing you found? "Leg power was a better indicator of knowledge changes than another lifestyle factor studied," the article says. In addition, it exposes that the twins with greater strength in the legs "had less brain changes associated with aging."
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Dr. Claire Steves, Research Leader and Senior Academic in Twin Research at King's College London and King's College Hospital explains, "Everyone wants to know how it's best to keep your brain in shape as you get older…. [Research] suggests that simple lifestyle changes to increase our physical activity can help us stay mentally and physically healthy."
Maybe that's why they titled the article: "Fitter legs linked to a 'fitter' brain." That is, strong legs associated with a 'fit' brain. Therefore, it would be good if you start walking a few additional steps a day, running, jogging, weights, whatever suits your lifestyle best. Worth it. Remember that, as the study suggests, you will have powerful legs, but most importantly, a fit brain.