Premium
The prospective impact of sleep duration on depression and mania
Author(s) -
Perlman Carol A,
Johnson Sheri L,
Mellman Thomas A
Publication year - 2006
Publication title -
bipolar disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.285
H-Index - 129
eISSN - 1399-5618
pISSN - 1398-5647
DOI - 10.1111/j.1399-5618.2006.00330.x
Subject(s) - mania , depression (economics) , mood , bipolar disorder , psychiatry , psychology , sleep (system call) , sleep debt , longitudinal study , sleep disorder , medicine , clinical psychology , insomnia , computer science , economics , macroeconomics , operating system , pathology
Objective: Many patients report sleeping less than 6 h per night during episodes of depression and mania. This type of sleep deficit may also be a risk factor for subsequent mood episodes; however, the long‐term impact of sleep deficit remains unclear. The current study is among few longitudinal studies to assess the prospective effect of sleep deficit on depression and mania. Methods: A subsample of 54 individuals from a longitudinal study of bipolar I disorder was selected. Participants entered the study during a mood episode. Baseline symptom data were collected at month 4 to allow for recovery from the initial episode, sleep was assessed at month 6, and follow‐up symptom data were obtained during months 7–12. Results: Sleep deficit predicted depressive symptoms across the 6‐month follow‐up but not mania. Conclusions: It is likely that the impact of sleep deficit on mania was probably missed because assessments covered a full month. Monitoring sleep duration may help predict depression in bipolar disorder and provide an opportunity for targeting intervention.