Older adults who keep a notably brisk walking pace into their 80s may be protecting their brains as much as their bodies, according to new research that is drawing attention from neurologists and aging specialists alike.
The study, published this month in the journal Neurology, followed nearly 4,000 adults aged 80 and older, comparing those researchers dubbed “super movers” — people whose natural walking speed matched that of individuals roughly 30 years younger — against peers with more typical, age-related gait decline. The super movers were about 50 percent less likely to develop cognitive decline over the course of the study.
“A super mover is someone who is older than age 80 and performing much better than their peers,” said Dr. Sofiya Milman of the Albert Einstein College of Medicine, one of the study’s authors, in comments to reporters. To qualify, participants needed a gait speed at least 1.5 standard deviations above the age- and sex-adjusted average for their cohort.
Brain imaging offered a clue as to why. Fast walkers were more likely to preserve hippocampal volume, the brain region essential for memory and spatial navigation, suggesting that gait speed may double as a window into brain health rather than simply reflecting healthy joints and muscles.
Researchers note that walking is a deceptively complex act, requiring tight coordination between the brain, nerves, muscles, and cardiovascular system — which may be exactly why a slowing gait can be an early warning sign long before memory problems become obvious. Dr. Joe Verghese, a neurologist involved in related research at Stony Brook Medicine, said the finding reinforces a growing understanding that physical and cognitive aging are deeply intertwined.
Still, the authors are cautious about drawing a straight line from the data to a prescription. The study is observational, meaning it shows an association rather than proof that speeding up one’s stride will, by itself, prevent dementia. People who walk faster in old age may also be healthier in other ways that independently protect the brain.
Even so, geriatric health experts say the takeaway is a hopeful one: unlike many risk factors for cognitive decline, physical activity and mobility are things people can actively work on well into later life, through strength training, balance exercises, and simply staying consistently active.
