Rest-activity rhythm and sleep characteristics associated with depression symptom severity in strained dementia caregivers.

ABSTRACT: Depression is associated with disturbances to sleep and the 24-h sleep-wake pattern (known as the rest-activity rhythm: RAR). However, there remains a need to identify the specific sleep/RAR correlates of depression symptom severity in population subgroups, such as strained dementia caregivers, who are at elevated risk for major depressive disorder. We assessed the cross-sectional associations of sleep/RARs with non-sleep depression symptom severity among 57 (mean age: 74 years, standard deviation: 7.4) strained dementia caregivers who were currently without clinical depression. We derived sleep measures from polysomnography and actigraphy, modelled RARs using a sigmoidally transformed cosine curve and measured non-sleep depression symptom severity using the Hamilton Depression Rating Scal

SUBMITTER: Smagula SF 

PROVIDER: S-EPMC5681446 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature