DAILY steps were linked to better cognition and lower cognitive impairment odds in U.S. older adults.
Daily Steps And Cognitive Function
HIGHER daily steps were associated with better cognitive performance and lower odds of cognitive impairment in community dwelling older adults, according to new findings from the Atherosclerosis Risk in Communities Study.
The analysis used data from 430 participants in the Physical Activity and Falls Ancillary study, a component of the wider ARIC cohort. Participants had a mean age of 78.4 years, 59.5% were female, and 19% were Black. Daily steps were measured objectively using a hip worn ActiGraph GT3X accelerometer for at least 10 hours per day on at least 3 days between 2016 and 2017.
At baseline, participants recorded a mean of 3,492 daily steps. Cognitive outcomes were assessed using global and domain specific factor scores from a neuropsychological battery, while cognitive impairment was adjudicated as mild cognitive impairment (MCI) or dementia.
Daily Steps May Offer Achievable Brain Health Target
After adjustment for demographics, lifestyle factors, and chronic conditions, higher daily steps were associated with better global cognition and executive function/processing speed. Participants in the high stepping group, defined as 4,025 or more steps per day, had a 0.37 point higher executive function/processing speed score compared with those in the low step group, defined as fewer than 2,449 steps per day.
The high step group also had 54% lower odds of prevalent cognitive impairment compared with the lowest step group. Spline models showed that cognitive benefits increased with higher daily steps and appeared to plateau after approximately 4,000 steps per day.
These findings may be clinically relevant because 4,000 daily steps may be more realistic for many older adults than higher physical activity targets. The strongest cognitive differences were seen with incremental increases among individuals with lower activity levels, suggesting that modest movement gains may still matter.
No Link With 4 Year Cognitive Change
Daily steps were not associated with 4-year cognitive change in this cohort. The cross-sectional nature of the strongest findings also means reverse causation cannot be excluded, as individuals with better cognition may have been more able to stay active.
Even so, accelerometer measured daily steps offer a practical, patient friendly metric for discussions around physical activity and cognitive health. Promoting achievable daily step goals could help older adults increase movement in a way that is measurable, familiar, and clinically meaningful.
Reference
Martinez-Amezcua P et al. Accelerometer-derived daily steps, cognition, and cognitive impairment in U.S. community-dwelling older adults: The Atherosclerosis Risk in Communities Study. Alzheimers Dement (N Y). 2026;12(2).
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