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ACTonFood. Acceptance and Commitment Therapy-Based Group Treatment Compared to Cognitive Behavioral Therapy-Based Group Treatment for Weight Maintenance: An Individually Randomized Group Treatment Trial
Cattivelli, R.; Guerrini Usubini, A.; Manzoni, G.M.; Riboni, F.V.; Pietrabissa, G.; Musetti, A.; Franceschini, C.; Varallo, G.; Spatola, C.A.M.; Giusti, E.; Castelnuovo, G.; Molinari, E. ACTonFood. Acceptance and Commitment Therapy-Based Group Treatment Compared to Cognitive Behavioral Therapy-Based Group Treatment for Weight Loss Maintenance: An Individually Randomized Group Treatment Trial. Int. J. Environ. Res. Public Health2021, 18, 9558.
Cattivelli, R.; Guerrini Usubini, A.; Manzoni, G.M.; Riboni, F.V.; Pietrabissa, G.; Musetti, A.; Franceschini, C.; Varallo, G.; Spatola, C.A.M.; Giusti, E.; Castelnuovo, G.; Molinari, E. ACTonFood. Acceptance and Commitment Therapy-Based Group Treatment Compared to Cognitive Behavioral Therapy-Based Group Treatment for Weight Loss Maintenance: An Individually Randomized Group Treatment Trial. Int. J. Environ. Res. Public Health 2021, 18, 9558.
Cattivelli, R.; Guerrini Usubini, A.; Manzoni, G.M.; Riboni, F.V.; Pietrabissa, G.; Musetti, A.; Franceschini, C.; Varallo, G.; Spatola, C.A.M.; Giusti, E.; Castelnuovo, G.; Molinari, E. ACTonFood. Acceptance and Commitment Therapy-Based Group Treatment Compared to Cognitive Behavioral Therapy-Based Group Treatment for Weight Loss Maintenance: An Individually Randomized Group Treatment Trial. Int. J. Environ. Res. Public Health2021, 18, 9558.
Cattivelli, R.; Guerrini Usubini, A.; Manzoni, G.M.; Riboni, F.V.; Pietrabissa, G.; Musetti, A.; Franceschini, C.; Varallo, G.; Spatola, C.A.M.; Giusti, E.; Castelnuovo, G.; Molinari, E. ACTonFood. Acceptance and Commitment Therapy-Based Group Treatment Compared to Cognitive Behavioral Therapy-Based Group Treatment for Weight Loss Maintenance: An Individually Randomized Group Treatment Trial. Int. J. Environ. Res. Public Health 2021, 18, 9558.
Abstract
The purpose of this Individually Randomized Group Treatment Trial was to compare an Acceptance and Commitment Therapy-based (ACT) group intervention and a Cog-nitive Behavioral Therapy-based (CBT) group intervention for weight loss maintenance in a sample of adult patients with obesity seeking treatment for weight loss. 155 over-weight adults (BMI: Kg/m2= 43.8[6.8]) attending a multidisciplinary rehabilitation program for weight loss were randomized into two conditions: ACT and CBT. Demo-graphical, physical, and clinical data were assessed at the beginning of the program (t0), at discharge (t1), and at 6-month follow-up (t2). The following measures were ad-ministered: The Acceptance and Action Questionnaire-II (AAQ-II) and the Clinical Outcome in Routine Evaluation-Outcome Measure (CORE-OM). Generalized linear mixed models were performed to assess differences between groups. Moderation ef-fects for gender and eating disorders (ED) have been considered. From baseline to dis-charge no significant differences between interventions were found, with the only ex-ception of an improvement in the CORE-OM total score and in the CORE-OM subjective well-being subscale for those in the CBT condition. From discharge to follow-up ACT group participants showed significant results in terms of weight loss maintenance, CORE-OM total score, and CORE-OM and AAQ-II’s wellbeing, symptoms, and psy-chological problems subscales. Gender moderated the effects of time and intervention on the CORE-OM’ subscale reporting the risk for self-harm or harm others. The pres-ence of an eating disorder moderated the effect of time and intervention on the CORE-OM total score, on the CORE-Om’ symptoms and psychological problems sub-scales, and on the AAQ-II. Patients who received the ACT intervention were more likely to achieve a ≥5% weight loss from baseline to follow-up and to maintain the weight loss after discharge. The ACT intervention was thus effective in maintaining weight loss over time.
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