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Effect of evening light exposure on sleep in bipolar disorder: A longitudinal analysis for repeated measures in the APPLE cohort by Esaki, Yuichi; Obayashi, Kenji; Saeki, Keigo; Fujita, Kiyoshi; Iwata, Nakao; Kitajima, Tsuyoshi is a Psychology article available to read on EtoBox.
What is Effect of evening light exposure on sleep in bipolar disorder: A longitudinal analysis for repeated measures in the APPLE cohort about?
## Objective: Sleep disturbance, a core feature of bipolar disorder, is associated with residual mood symptoms, mood episode recurrence and suicide ideation. We investigated the effect of evening light exposure on sleep in patients with bipolar disorder. ## Methods: In this longitudinal analysis, we measured the sleep parameters of 207 outpatients with bipolar disorder using actigraphy at their homes for seven consecutive nights. We measured the white-light illuminance and the irradiance of each wavelength during the 4 hours before each participant’s bedtime. We used mixed-effect linear regression analysis for repeated measures to evaluate the effect of evening light exposure on subsequent sleep parameters. ## Results: The median white-light illuminance was 25.8 lux (interquartile range, 12.9–50.1 lux). In a multivariable model adjusted for potential confounders, we found higher white-light illuminance to be significantly associated with lower sleep efficiency (per log lux: 95% confidence interval = [−1.328, −0.133]; p = 0.017), prolonged sleep-onset latency (95% confidence interval = [0.006, 0.172]; p = 0.035) and longer wake after sleep onset (95% confidence interval = [1.104, 4.
Who reads Effect of evening light exposure on sleep in bipolar disorder: A longitudinal analysis for repeated measures in the APPLE cohort?
It is typically read by researchers, students, and practitioners in Psychology.
- Author
- Esaki, Yuichi; Obayashi, Kenji; Saeki, Keigo; Fujita, Kiyoshi; Iwata, Nakao; Kitajima, Tsuyoshi
- Publisher
- Informa plc; SAGE Publications (ISSN 0004-8674)
- Published
- 2020
- Language
- EN
- Field
- Psychology (Social Sciences)