Research on physical activity and cognitive health

Research has identified connections between physical movement, brain structure, and cognitive health. Initial studies involving over 2,600 MRI scans indicated that age-related shifts in brain geometry—specifically the expansion of lower and anterior sections alongside the contraction of upper and posterior sections—may be linked to declines in memory and executive function.

These findings were complemented by research suggesting that regular, brisk walking of at least ten minutes daily is associated with improved brain health indicators and better performance in decision-making and concentration tasks.

Subsequent analysis of nearly 4,000 participants found that walking speed is a significant indicator of dementia risk. Individuals with motor performance faster than 93% of their peers demonstrated a 50% lower risk of cognitive decline and a 60% lower risk of Alzheimer’s disease or other dementias. Imaging in these faster walkers revealed a larger hippocampus, which is associated with slower declines in memory and information processing speed.