Objective: To evaluate the effectiveness of acceptance and commitment therapy (ACT) on depressive symptoms in physically disabled persons. Design: Randomized controlled trial. Setting: State welfare organization in Kamyaran, Kurdistan, Iran. Participants: Fifty-two physically disabled participants with a primary diagnosis of depression were randomly assigned to either ACT or control groups. Interventions: Participants in the ACT group (n = 23) received eight weekly 90-minute group sessions based on standard ACT protocol for depression. Participants in the control group (n = 29) received psychoeducation regarding depression. Main measures: Measures were recorded at baseline, eight weeks (end of treatment), and 16 weeks (follow-up). The outcomes were the change in the depressive symptoms, measured by Beck Depression Inventory-II (BDI-II), psychological flexibility, emotion regulation, and psychological well-being measured by Acceptance and Action Questionnaire-II (AAQ-II), Emotion Regulation Questionnaire (ERQ), and Scales of Psychological Well-Being (SPWB), respectively. Results: After eight weeks, significant changes in depressive symptoms was observed in the experimental group (ACT –10.39 ± 0.79 vs control 0.66 ± 0.68, P < 0.001). Compared to the control group, the experimental group also showed significant improvement in psychological flexibility (ACT 8.13 ± 0.52 vs control –0.03 ± 0.51, P < 0.001), adaptive emotion regulation strategies (ACT 10.74 ± 0.62 vs control 0.03 ± 1.03, P < 0.001), and psychological well-being (ACT 66.95 ± 4.01 vs control –1.90 ± 1.04, P < 0.001). Conclusion: Compared with control group, ACT significantly reduced the participants’ depression, and changed psychological flexibility, emotion regulation, and psychological well-being in persons with physical disability.
