Brain Function Messures of a Psychological Flexibility Skills Training Based on ACT Over Disordered Eating Behaviors

NCT07492056 | Not Yet Recruiting DMC

• 1 other identifier: MP/2026/IJACC
• Study Type: interventional
• Target: 30
• Locations: 0 countries
• Sites: N/A

Brief Summary

Overweight and obesity are an increasing tendencies worldwide. Disordered Eating Behaviors (DEBs) are feeding dynamics commonly present on them, as in Feeding Disorders (FD). These eating and body conditions are highly correlated with specific psychopathological symtoms, such as anxiety and depression, weight-related shame and stigma, and academic stress. Additionally, electroencephalographic findings suggest that weight- and eating-related conditions may be mediated by neural pathways specific to executive functions, such as selective attention and inhibitory control. Therefore, this cuasi-experimental design, pre- and post- measurement, longitudinal cross-sectional study aims to evaluate the effect of a training on psychological flexibility skills, based on Acceptance and Commitment Therapy (ACT) processes, on psychological, electroencephalographic and body composition measures.

Conditions

General Population (no Specific Condition or Disease)

Outcome Measures

Primary Outcomes (11)

• Disordered Eating Behaviors.

  A scale called "Dutch Eating Behaviour Questionnarie", that is validated on mexican population to mesure Disordered Eating Behaviors on three dimennsions, 1) Restrictive Eating. 2) Emotional Eating. 3) External Eating. Reactives: 33. Estimated application time: 20 minutes. No parametric data on mexican population, however, raw data will be taken from pre- and post-messures.

  Pre-post intervention assessment, after 12 weeks.

• Disordered Eating Behaviors.

  A scale called "Binge Eating Scale". Scores range from 0 min-46 max, normal score ranges from ≤17. Reactives: 16. Estimated application time: 6 to 8 minutes.

  Pre-post intervention assessment, after 12 weeks.

• Disordered Eating Behaviors.

  A scale called "Three-Factor Eating Questionnaire-R18 (TFEQ-R18)", that is validated on mexican population to mesure Disordered Eating Behaviors on three dimennsions, 1) Cognitive Restraint. 2) Emotional Eating. 3) Uncontrolled Eating. Scores range from min-18 to max-72, normal score ranges from 2.1 to 2.9. Reactives: 18. Estimated application time: 6 to 8 minutes.Estimated application time: 6 to 8 minutes.

  Pre-post intervention assessment, after 12 weeks.

• Anxiety Symtoms.

  Anxiety Beck inventory, adapted and validated version to Mexican population, will be used. Scores range from 0 min-63 max. Normal score ranges ≤12.

  Pre-post intervention assessment, after 12 weeks

• Depression Symtoms.

  Beck Depression inventory, adapted and validated version to Mexican population, will be used. Scores range from 0 min-63 max. Normal score ranges ≤10.

  Pre-post intervention assessment, after 12 weeks.

• Inhibitory Control

  Stroop test, will be measured from the standardized executive function test BANFE, using accuracy of response, stroop type error, no-Stroop errors, and time, Total score is transformed to normalized points 0-19 (with a mean of 10 ±3 SD, 4-6 low, 14-19 high performance).

  Pre-post intervention assessment, after 12 weeks.

• Cognitive Flexibility

  Card Sorting Test, will be measured from the standardized executive function test BANFE, using accurcy of response, perseverations, time, and errors. Total score is transformed to normalized points 0-19 (with a mean of 10 ±3 SD, 4-6 low, 14-19 high performance).

  Pre-post intervention assessment, after 12 weeks.

• Social Cognition

  Index from computarized adapted version of the Mind in the Eyes test, index 0 (min) - 36 (max) score, expected score ranges from 25-36.

  Pre-post intervention assessment, after 12 weeks.

• Perceived Stress

  Perceived Stress Scale (PSS), for mexican population. Scores range from min-3 to max-46, normal score ranges from 2.1 to 2.9. Estimated application time: 2 to 4 minutes.

  Pre-post intervention assessment, after 12 weeks.

• Body image satisfaction

  Body Shape Questionnaire (BSQ). Scores range from 18 min-108max, normal score ranges from ≤80. Estimated application time: 5 to 7 minutes.

  Time Frame: Pre-post intervention assessment, after 12 weeks.

• Neuroelectrical activity.

  Global Brain Activity (GBA) electroencephalography neurophysiological recording of each participant will be performed, using food pictures taken from selected from the International Affective Picture System (IAPS) in an artifact-free room using a 14-channel Emotiv EPOC. Only 8 channels are going to be monitorized: Fp1, Fp2, F3, F4, F7, F8, P3 \& P4, and only frequencies between 8-12, and 13 to 30, for Alpha and Beta, respectively. On Alpha frecuencies we are looking for Alpha suppression, desynchronization, when viewing food cues, interpreted as increased attentional engagement, while on Beta Higher power in frontal areas, linked to reward sensitivity, cognitive control, or arousal. The datasets will be stored in the research mainframe for subsequent property extraction and offline analysis using artificial intelligence tools and techniques.

  Pre-post intervention assessment, after 12 weeks

Study Arms (2)

Direct intervention over outcomes.

EXPERIMENTAL

Behavioral: A Psychological Flexibility Skills Training based on ACT.

Wait list

NO INTERVENTION

No intervention.

Interventions

A Psychological Flexibility Skills Training based on ACT. BEHAVIORAL

Based on ACT procesess; defusion, presence, acceptance, perspective taking, values and commited action.

Direct intervention over outcomes.

Eligibility Criteria

• Age: 18 Years - 30 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Between 18 and 30 years old.
• Currently enrrolled in university studies.
• Attend at least 80% of the intervention sessions.

You may not qualify if:

• Having a diagnosis of personality disorder.
• Failure to attend post-assessment.
• Currently attending psychological therapy or psychiatric care..

Sponsors & Collaborators

• Universidad Autonoma de Baja California: lead

MeSH Terms

Conditions

Disease

Condition Hierarchy (Ancestors)

Pathologic Processes; Pathological Conditions, Signs and Symptoms

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: PARTICIPANT, OUTCOMES ASSESSOR
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Full time Professor

Study Record Dates

• First Submitted: March 19, 2026
• First Posted: March 25, 2026
• Study Start (Estimated): August 30, 2026
• Primary Completion (Estimated): October 30, 2026
• Study Completion (Estimated): March 15, 2027
• Last Updated: April 1, 2026

Record last verified: 2026-02