Exploring the within-person coupling of sleep and cognition in older African Americans.
This study examined the within-person relationship between sleep and cognitive functioning. Fifty community-dwelling African Americans (age range = 50-80 years) were asked to report their sleep duration and quality the previous evening and to complete cognitive measures over 8 occasions within a 2-3 week period. A within-person daily change in sleep duration was significantly associated with worse global cognitive performance. The greater an individual deviated away from his or her average sleep duration on a particular day, the more likely his or her performance would decline. These results demonstrate that the sleep-cognition relationship can be observed at a within-person level of analysis.
National Institute on Aging, National Institute of Health, Intramural Research Program, Biomedical Research Center, 251 Bayview Blvd., Baltimore, MD 21224, USA. agamaldo@gmail.com
Alyssa A
AA
Gamaldo
Jason C
JC
Allaire
Keith E
KE
Whitfield
D001741:Black or African American / Q000523:psychology*; D000368:Aged; D000369:Aged, 80 and over; D003071:Cognition / Q000502:physiology; D056344:Executive Function; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests; D012890:Sleep / Q000502:physiology; D013997:Time Factors