According to numerous studies, physical exercise helps prevent dementia and cognitive decline in aging. It makes sense, since exercise can require concentration that’s mentally stimulating, and also because exercise increases blood flow to the brain.
Physical exercise seems beneficial in the prevention of cognitive impairment and dementia in old age, numerous studies have shown. Now researchers have explored in one of the first studies worldwide how exercise affects brain metabolism.
In order to further advance current state of knowledge on the positive influence of physical activity on the brain, gerontologists and sports physicians at Goethe University Frankfurt have examined the effects of regular exercise on brain metabolism and memory of 60 participants aged between 65 and 85 in a randomised controlled trial. Their conclusion: regular physical exercise not only enhances fitness but also has a positive impact on brain metabolism.
As expected, physical activity had influenced brain metabolism: it prevented an increase in choline. The concentration of this metabolite often rises as a result of the increased loss of nerve cells, which typically occurs in the case of Alzheimer’s disease. Physical exercise led to stable cerebral choline concentrations in the training group, whereas choline levels increased in the control group. The participants’ physical fitness also improved: they showed increased cardiac efficiency after the training period. Overall, these findings suggest that physical exercise not only improves physical fitness but also protects cells.