Introduction Little is known about the longitudinal association between napping and
cognitive impairment in older adults. Methods We used wrist actigraphy to measure naps in
2751 community-dwelling older men. Cognition was assessed repeatedly over 12 years,
and clinically significant cognitive impairment was determined by physician diagnosis,
Alzheimer's medication use or a significant cognitive decline. Results After adjustment for all
covariates, men with longer napping duration had greater cognitive decline and higher risk …