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Maintained superiority of chronotherapeutics vs. exercise in a 20-week randomized follow-up trial in major depression

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OBJECTIVE: To investigate the long-term antidepressant effect of a chronotherapeutic intervention.

METHOD: In this randomized controlled trial 75 patients with major depression were allocated to fixed duloxetine and either a chronotherapeutic intervention (wake group) with three initial wake therapies, daily bright light therapy, and sleep time stabilization or to a group using daily exercise. Patients were followed 29 weeks. We report the last 20 weeks, a follow-up phase, where medication could be altered. Patients were assessed every 4 weeks. Remission rates were primary outcome.

RESULTS: Patients in the wake group had a statistically significant higher remission rate of 61.9% vs. 37.9% in the exercise group at week 29 (OR = 2.6, CL = 1.3-5.6, P = 0.01). This indicated continued improvement compared with the 9 weeks of treatment response (44.8% vs. 23.4%) with maintenance of the large difference between groups. HAM-D17 endpoint scores were statistically lower in the wake group with endpoint scores of 7.5 (SE = 0.9) vs. 10.1 (SE = 0.9) in the exercise group (difference 2.7, CL = 0.5-4.8, P = 0.02).

CONCLUSION: In this clinical study patients continued to improve in the follow-up phase and obtained very high remission rates. This is the first study to show adjunct short-term wake therapy and long-term bright light therapy as an effective and feasible method to attain and maintain remission.

Original languageEnglish
JournalActa Psychiatrica Scandinavica
Volume131
Issue number6
Pages (from-to)446-57
Number of pages12
ISSN0001-690X
DOIs
Publication statusPublished - Jun 2015

    Research areas

  • Adult, Aged, Antidepressive Agents, Combined Modality Therapy, Depressive Disorder, Major, Drug Chronotherapy, Duloxetine Hydrochloride, Exercise, Exercise Therapy, Female, Follow-Up Studies, Humans, Male, Middle Aged, Phototherapy, Self-Assessment, Sleep, Treatment Outcome

ID: 45954824