FindTrial
Sign In

The effect of dietary weight loss intervention using the behavioral model of Acceptance and Commitment Therapy (ACT) on mental health in overweight and obese adults: A Cluster Randomized Controlled Trial

The effect of dietary weight loss intervention using the behavioral model of Acceptance and Commitment Therapy (ACT) on mental health in overweight and obese adults: A Cluster Randomized Controlled Trial

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
IRCT
Registry ID
IRCT20170812035642N6
Enrollment
130
Registered
2025-09-07
Start date
2025-04-09
Completion date
Unknown
Last updated
2025-09-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Condition 1: Mental health. Condition 2: Overweight and Obesity. Overweight and obesity

Interventions

Intervention 1: Intervention group: Individuals in this group receive three interventions: Weight Loss Diet, Acceptance and Commitment Behavioral Therapy intervention, and Physical Activity interventi
Session 1: Getting to know and building relationships with group members, psycho-education, understanding cognitive fusion, mindfulness, and emotion from an ACT perspective, and distributing a questio
Session 2: Discussing experiences and evaluating them, creating creative frustration, asking individuals to talk about their anxieties, and reviewing the effectiveness of the next week's practice
Session 3: Introducing the desire to experience emotion as an alternative to control, the degree of apparent success in controlling emotions, programming internal events, and practicing numbers
Session 4: Review of previous session experiences, behavioral task and commitment, introduction of fault-finding, application of cognitive fault-finding techniques, rest and reception, intervention in
Session 5: Review of observer's task and behavioral commitment, showing the separation between self, inner experiences and behavior, observing self as a context, weakening self-concept and self-expres
Session 6: Performance assessment, application of mindfulness methods, conflict between experience and mind, rest and receptio

Sponsors

Tehran University of Medical Sciences
Lead Sponsor

Eligibility

Sex/Gender
All
Age
20 Years to 59 Years

Inclusion criteria

Inclusion criteria: Adults Aged 20-59 Years Overweight or obese people (Body Mass Index 25-40) Both genders Living in Tehran Willingness to participate in the Study

Exclusion criteria

Exclusion criteria: Being pregnant or breastfeeding, or planning to become pregnant in the next 12 months Following a specific diet Current participation in a weight loss program or a behavioral therapy program Recent weight loss Serious medical conditions (such as diabetes, cancer, Alzheimer's, Parkinson's, liver and kidney diseases, history of stroke and heart attack, rheumatoid arthritis, and other chronic diseases as self-reported) Serious mental disorders (such as bipolar disorder, schizophrenia, or eating disorders) Using medication for overweight and obesity Using medication for mental disorders History of bariatric surgery Smoking Current substance abuse or dependency Inability to perform physical activities

Design outcomes

Primary

MeasureTime frame
Depression score. Timepoint: Beginning of the Intervention (before the start of the intervention) and end of the intervention (after the end of the 12-weeks intervention). Method of measurement: Depression Anxiety Stress Scales (DASS-21).;Anxiety score. Timepoint: Beginning of the Intervention (before the start of the intervention) and end of the intervention (after the end of the 12-weeks intervention). Method of measurement: Depression Anxiety Stress Scales (DASS-21).—

Secondary

MeasureTime frame
Body weight. Timepoint: Beginning of the Intervention (Before the Start of the Intervention) and End of the Intervention (After the End of the 12-Weeks Intervention). Method of measurement: Digital scale.;Body Mass Index (BMI). Timepoint: Beginning of the Intervention (Before the Start of the Intervention) and End of the Intervention (After the End of the 12-Weeks Intervention). Method of measurement: Wall Height Gauge and Digital Scale.—

Countries

Iran (Islamic Republic of)

Contacts

Public ContactSakineh Shabbidar

Tehran University of Medical Sciences

s_shabbidar@tums.ac.ir+98 21 8895 5742

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026