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

Roberto Cattivelli, Anna Guerrini Usubini, Gian Mauro Manzoni, Francesco Vailati Riboni, Giada Pietrabissa, Alessandro Musetti, Christian Franceschini, Giorgia Varallo, Chiara A. M. Spatola, Emanuele Giusti, Gianluca Castelnuovo and Enrico Molinari
Additional contact information
Roberto Cattivelli: Psychology Research Laboratory, Istituto Auxologico Italiano IRCCS, 20145 Milan, Italy
Anna Guerrini Usubini: Psychology Research Laboratory, Istituto Auxologico Italiano IRCCS, 20145 Milan, Italy
Gian Mauro Manzoni: Psychology Research Laboratory, Istituto Auxologico Italiano IRCCS, 20145 Milan, Italy
Francesco Vailati Riboni: Department of Psychology, Catholic University of Milan, 20123 Milan, Italy
Giada Pietrabissa: Psychology Research Laboratory, Istituto Auxologico Italiano IRCCS, 20145 Milan, Italy
Alessandro Musetti: Department of Humanities, Social Sciences and Cultural Industries, University of Parma, 43121 Parma, Italy
Christian Franceschini: Department of Medicine and Surgery, University of Parma, 43121 Parma, Italy
Giorgia Varallo: Psychology Research Laboratory, Istituto Auxologico Italiano IRCCS, 20145 Milan, Italy
Chiara A. M. Spatola: Department of Psychology, Catholic University of Milan, 20123 Milan, Italy
Emanuele Giusti: Psychology Research Laboratory, Istituto Auxologico Italiano IRCCS, 20145 Milan, Italy
Gianluca Castelnuovo: Psychology Research Laboratory, Istituto Auxologico Italiano IRCCS, 20145 Milan, Italy
Enrico Molinari: Psychology Research Laboratory, Istituto Auxologico Italiano IRCCS, 20145 Milan, Italy

IJERPH, 2021, vol. 18, issue 18, 1-19

Abstract: The purpose of this Individually Randomized Group Treatment Trial was to compare an Acceptance and Commitment Therapy-based (ACT) group intervention and a Cognitive Behavioral Therapy-based (CBT) group intervention for weight loss maintenance in a sample of adult patients with obesity seeking treatment for weight loss. One hundred and fifty-five adults (BMI: Kg/m 2 = 43.8 [6.8]) attending a multidisciplinary rehabilitation program for weight loss were randomized into two conditions: ACT and CBT. Demographical, physical, and clinical data were assessed at the beginning of the program (t 0 ), at discharge (t 1 ), and at 6-month follow-up (t 2 ). The following measures were administered: 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 effects for gender and Eating Disorders (ED) have been considered. From baseline to discharge, no significant differences between interventions were found, with the only exception of an improvement in the CORE-OM total score and in the CORE-OM subjective wellbeing 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 wellbeing, symptoms, and psychological problems subscales. Gender moderated the effects of time and intervention on the CORE-OM subscale reporting the risk for self-harm or harm of others. The presence 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 subscales, 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.

Keywords: obesity; obesity rehabilitation; weight loss maintenance; eating disorders; Acceptance and Commitment Therapy; Cognitive Behavioral Therapy; clinical psychology (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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