Mindfulness-based cognitive therapy improves insomnia symptoms in individuals with recurrent depression: secondary analyses from a randomized controlled trial

Linn Nyjordet Evanger; Elisabeth Flo-Groeneboom; Lin Sørensen; Elisabeth Schanche

doi:10.3389/fpsyt.2023.1231040

Mindfulness-based cognitive therapy improves insomnia symptoms in individuals with recurrent depression: secondary analyses from a randomized controlled trial

Front Psychiatry. 2024 Jan 19:14:1231040. doi: 10.3389/fpsyt.2023.1231040. eCollection 2023.

Authors

Linn Nyjordet Evanger^{1

2}, Elisabeth Flo-Groeneboom², Lin Sørensen³, Elisabeth Schanche²

Affiliations

¹ Department of Global Public Health and Primary Care, Faculty of Medicine, University of Bergen, Bergen, Norway.
² Department of Clinical Psychology, Faculty of Psychology, University of Bergen, Bergen, Norway.
³ Department of Biological and Medical Psychology, Faculty of Psychology, University of Bergen, Bergen, Norway.

Abstract

Background: Embedded within a randomized efficacy trial, the present study aimed to investigate whether mindfulness-based cognitive therapy (MBCT) for recurrent depression improved symptoms of insomnia.

Methods: Sixty-eight remitted participants with at least three prior episodes of depression were randomized to 8 weeks of MBCT (n = 33) or a waitlist control condition (n = 35). The Bergen Insomnia Scale was used to screen for insomnia symptoms before and after the intervention. The analyses were conducted using one-way between-groups analyses of covariance.

Results: Twenty-five MBCT participants and 30 waitlist controls completed the study (74.5% females; mean age 40.7 ± 12.9 years). At baseline, 83.6% screened positive for the insomnia diagnosis. Following the intervention and after controlling for corresponding insomnia parameters at baseline, MBCT completers reported significantly less severe insomnia symptoms (p = 0.017), as well as less problems with prolonged sleep onset (p = 0.047) and nocturnal awakenings (p = 0.023), relative to controls. No group differences were found on early morning awakening, daytime impairment, or dissatisfaction with sleep.

Conclusion: The results suggest that MBCT improves certain insomnia symptoms. However, additional sleep-specific interventions may be needed to further improve this population's sleep.Clinical Trial Registration: ISRCTN, ISRCTN18001392, registered 22/11/2018. URL: 10.1186/ISRCTN18001392.

Keywords: MBCT; insomnia; mindfulness; psychotherapy; recurrent depression; sleep.