%0 Journal Article %@ 2368-7959 %I JMIR Publications %V 10 %N %P e43164 %T Mobile Acceptance and Commitment Therapy in Bipolar Disorder: Microrandomized Trial %A Cochran,Amy %A Maronge,Jacob M %A Victory,Amanda %A Hoel,Sydney %A McInnis,Melvin G %A Thomas,Emily BK %+ Department of Population Health Sciences, University of Wisconsin Madison, 610 Walnut Street, Madison, WI, 53726, United States, 1 608 262 0772, cochran4@wisc.edu %K acceptance and commitment therapy %K bipolar disorder %K mobile applications %K randomized controlled trials %K micro-randomized trial %K precision medicine %K mindfulness %D 2023 %7 20.4.2023 %9 Original Paper %J JMIR Ment Health %G English %X Background: Mobile interventions promise to fill in gaps in care with their broad reach and flexible delivery. Objective: Our goal was to investigate delivery of a mobile version of acceptance and commitment therapy (ACT) for individuals with bipolar disorder (BP). Methods: Individuals with BP (n=30) participated in a 6-week microrandomized trial. Twice daily, participants logged symptoms in the app and were repeatedly randomized (or not) to receive an ACT intervention. Self-reported behavior and mood were measured as the energy devoted to moving toward valued domains or away from difficult emotions and with depressive d and manic m scores from the digital survey of mood in BP survey (digiBP). Results: Participants completed an average of 66% of in-app assessments. Interventions did not significantly impact the average toward energy or away energy but did significantly increase the average manic score m (P=.008) and depressive score d (P=.02). This was driven by increased fidgeting and irritability and interventions focused on increasing awareness of internal experiences. Conclusions: The findings of the study do not support a larger study on the mobile ACT in BP but have significant implications for future studies seeking mobile therapy for individuals with BP. Trial Registration: ClinicalTrials.gov NCT04098497; https://clinicaltrials.gov/ct2/show/NCT04098497 %M 37079363 %R 10.2196/43164 %U https://mental.jmir.org/2023/1/e43164 %U https://doi.org/10.2196/43164 %U http://www.ncbi.nlm.nih.gov/pubmed/37079363