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Depressive symptoms moderate the relationship between sleep quality and cognitive functions among the elderly
- Source :
- Journal of Clinical and Experimental Neuropsychology. 38:1168-1176
- Publication Year :
- 2016
- Publisher :
- Informa UK Limited, 2016.
-
Abstract
- The co-occurrence of sleep problems, cognitive impairment, and depression among the elderly suggests that these three conditions are likely to be interrelated. Recent findings suggest that depressive symptoms moderate the relationship between sleep problems and cognitive impairment in elderly people but methodological problems have led to inconsistent conclusions. The present study aims to better understand the relationship between sleep quality, depressive symptoms, and cognitive function.We administered the Repeatable Battery for the Assessment of Neuropsychological Status and self-report measures of sleep quality and depression to 380 elderly participants (Mage = 68 years, SD= 5.7). Bootstrapped moderation analyses were conducted to examine the role of depressive symptoms in the relationship between sleep and various aspects of cognitive function.This moderation effect was significant in the domains of delayed memory (ΔR(2) = .01, F = 4.5, p = .04), language (ΔR(2) = .01, F = 4.6, p = .035), and general cognitive status (ΔR(2) = .01, F = 5.3, p = .02). However, unlike previous studies, higher sleep quality corresponded to better outcomes in delayed memory, language abilities, and general cognitive status in participants with low levels of depressive symptoms. No significant relationship between sleep quality and any cognitive function was observed among participants with high levels of depressive symptoms.Among individuals who reported low levels of depressive symptoms, sleep quality was positively related to cognitive performance in the domains of delayed recall, language, and general cognitive status. However, sleep quality was not significantly associated with cognitive abilities in these domains among participants with elevated levels of depressive symptoms; participants had relatively poor outcomes in these cognitive domains regardless of their sleep quality.
- Subjects :
- Male
medicine.medical_specialty
Repeatable Battery for the Assessment of Neuropsychological Status
Neuropsychological Tests
03 medical and health sciences
Cognition
0302 clinical medicine
Memory
medicine
Humans
Attention
030212 general & internal medicine
Psychiatry
Cognitive impairment
Depressive symptoms
Depression (differential diagnoses)
Aged
Language
Aged, 80 and over
Sleep quality
Depression
Middle Aged
Moderation
Sleep in non-human animals
Clinical Psychology
Neurology
Female
Neurology (clinical)
Sleep
Psychology
030217 neurology & neurosurgery
Clinical psychology
Subjects
Details
- ISSN :
- 1744411X and 13803395
- Volume :
- 38
- Database :
- OpenAIRE
- Journal :
- Journal of Clinical and Experimental Neuropsychology
- Accession number :
- edsair.doi.dedup.....799ba5f0a9c58027fe68b27cea795673