Adult neurogenesis in the hippocampus was significantly increased by aerobic exercise while resistance training had no effect on neurogenesis but did improve strength in rats. Since both cognitive decline and frailty (decrease in strength) occur with age it may be good to engage in both aerobic and strength training.
A good reason to add some aerobic exercise to your resistance training: it may grow new neurons in the brain better.
www.sciencedaily.com
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