Effects of Thai Food-Specific Inhibition Control Training on Psychophysiological Outcomes in Thai Adults With Obesity
Obesity & Overweight · Obesity (Disorder)
What this study involves
The registry does not currently label this study as recruiting. Ask about its status before planning a screening visit.
- Study type
- Interventional
- Phase
- Not applicable
- Age range
- 18 years - 59 years
- Sex eligible
- All sexes
- Healthy volunteers
- Not accepted
- Participants
- 72 Estimated
These are starting points, not an eligibility decision. The research team must review the full requirements.
About the research
This randomized controlled trial aims to investigate the effects of Thai food-specific inhibition control training on psychological, physiological, behavioral, and neurophysiological outcomes in Thai adults with obesity.
A total of 72 participants will be randomly assigned to either a Thai food-specific inhibition control training group (n = 36) or a general inhibition control training group (n = 36). Both groups will receive training five days per week for eight consecutive weeks.
Psychological, anthropometric, and eating-related behavioral outcomes will be assessed at baseline (T0), immediately after the eight-week intervention (T1), and at a four-week post-intervention follow-up (T2). Event-related potential components, including N2 and P3, will be assessed at baseline and immediately after the intervention.
The study will compare changes in outcomes between the two intervention groups over time to determine whether Thai food-specific inhibition control training produces different effects from general inhibition control training.
Read the full description
Background
Obesity is a multifactorial condition involving physiological, psychological, cognitive, environmental, and behavioral factors. Inhibitory control, a component of executive functioning, is involved in regulating behavioral responses to food-related stimuli. Training inhibitory control in response to culturally relevant food stimuli may provide a behavioral approach to improving eating-related self-regulation.
Study Objectives
The study aims to compare the effects of Thai food-specific inhibition control training with general inhibition control training on psychological outcomes, including health-related quality of life, psychological distress, psychological well-being, and self-esteem, as well as physiological and behavioral outcomes, including anthropometric measurements, eating behavior, eating inhibition control behavior, and neurophysiological indicators of cognitive control.
Study Design
This is a two-arm, parallel-group randomized controlled trial involving 72 Thai adults with obesity. Participants will be allocated to one of two intervention groups, with 36 participants planned per group.
Interventions
The experimental group will receive Thai food-specific inhibition control training. The active comparator group will receive general inhibition control training. Both interventions will be conducted five days per week over eight consecutive weeks.
Assessments
The study includes three assessment periods: baseline (T0), post-intervention at eight weeks (T1), and follow-up four weeks after the intervention (T2).
Psychological outcomes will be measured using the Short Form-36 Health Survey (SF-36), Mental Health Inventory (MHI-38), and Rosenberg Self-Esteem Scale (RSE-10).
Eating-related outcomes will be assessed using the Dutch Eating Behavior Questionnaire (DEBQ), Power of Food Scale (PFS), and Eating Inhibition Control Behavior Questionnaire (EICB).
Anthropometric assessments will include body weight, body mass index, and waist circumference.
Neurophysiological assessments will use electroencephalography to examine event-related potential components associated with inhibitory control, particularly N2 and P3, at baseline and after the eight-week intervention.
Statistical Analysis
Descriptive statistics will be used to summarize participant characteristics. Mixed repeated-measures analysis of variance will be used to evaluate the effects of group, time, and group-by-time interactions on study outcomes, with the statistical significance level set at 0.05.
The principal scientific comparison concerns differences in changes between the two training groups over time.
Who may be able to participate?
The list below is the sponsor’s full registry wording. It can include conditions, prior treatment, test results and other requirements. A match in search does not mean you qualify.
Inclusion Criteria:
- Thai adults aged 18-59 years.
- Body mass index (BMI) ≥25 kg/m² and abdominal obesity defined by waist circumference ≥90 cm for men or ≥80 cm for women.
- Normal or corrected-to-normal vision.
- Sufficient Thai-language proficiency to understand the study instructions.
- No history of diagnosed or treated eating disorders, psychiatric disorders, or neurological disorders, as assessed according to the study screening procedures.
- No history of medications affecting appetite, satiety, gastrointestinal hormones, or dopaminergic functioning, as defined in the study protocol.
- No metabolic or chronic diseases associated with obesity, including diabetes mellitus or cardiovascular disease, as defined in the study protocol.
- No participation in an energy-restricted dietary program within three months before the intervention.
- No smoking or recreational drug use.
- Not pregnant or breastfeeding during the study.
- Ability to complete the study questionnaires and assessments.
Exclusion Criteria:
- Development of a physical or psychological condition during the study that may increase participation-related risks or compromise participant safety.
- Diagnosis of or initiation of treatment for an eating disorder during the study.
- Major life events or circumstances that prevent continued participation in scheduled research activities.
- Adverse events that, in the investigator's judgment, require discontinuation of study participation for safety reasons.
Treatment, groups and participation
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- Assignment
- Random assignment
- Masking
- Triple masked
Thai Food-Specific Inhibition Control Training
Participants assigned to the experimental group will receive a Thai food-specific response inhibition training program incorporating food-related inhibitory control tasks. The training is designed to strengthen inhibitory control in response to Thai food stimuli.
Participants will receive the intervention five days per week for eight consecutive weeks.
Behavioral: Thai Food-Specific Inhibition Control Training
General Inhibition Control Training
Participants assigned to the active comparator group will receive a general response inhibition training program that is not specifically focused on Thai food stimuli.
Participants will receive the intervention five days per week for eight consecutive weeks.
Behavioral: General Inhibition Control Training
Thai Food-Specific Inhibition Control Training BEHAVIORAL
Thai Food-Specific Inhibition Control Training
General Inhibition Control Training BEHAVIORAL
General Inhibition Control Training
What researchers are measuring
Outcome measures describe what is being studied. They are not proof that a treatment works.
Primary measures
Change in Body Weight
Time frame: Baseline, Week 8, and Week 12.
Body weight measured in kilograms using a weighing scale
Change in Body Mass Index
Time frame: Baseline, Week 8, and Week 12.
BMI calculated as body weight in kilograms divided by height in meters squared.
Change in Waist Circumference
Time frame: Baseline, Week 8, and Week 12.
Waist circumference measured in centimeters using a measuring tape.
Secondary measures
Change in Eating Behavior
Time frame: Baseline, Week 8, and Week 12. Specify total or subscale scores and scoring range.
Measured using the Dutch Eating Behavior Questionnaire (DEBQ)
Change in Power of Food Scale Score
Time frame: Baseline, Week 8, and Week 12. Specify scoring range and interpretation
Measured using the Power of Food Scale (PFS)
Change in Eating Inhibition Control Behavior Score
Time frame: Baseline, Week 8, and Week 12
Measured using the 54-item Eating Inhibition Control Behavior Questionnaire (EICB). Total score ranges from 54 to 270; higher scores indicate better eating inhibition control behavior
Change in Health-Related Quality of Life
Time frame: Baseline, Week 8, and Week 12. Specify the eight domain scores or prespecified summary scores.
Measured using the SF-36 Health Survey
Change in Mental Health
Time frame: Baseline, Week 8, and Week 12. Specify psychological distress and well-being scoring.
Measured using the Mental Health Inventory-38 (MHI-38)
Change in Self-Esteem
Time frame: Baseline, Week 8, and Week 12. Confirm scoring convention.
Measured using the 10-item Rosenberg Self-Esteem Scale (RSE-10)
Change in N2 Event-Related Potential Amplitude
Time frame: Baseline and Week 8. Confirm electrode, task condition, and latency window
N2 amplitude measured in microvolts (µV) during the inhibitory control task
Change in P3 Event-Related Potential Amplitude
Time frame: Baseline and Week 8. Confirm electrode, task condition, and latency window
P3 amplitude measured in microvolts (µV) during the inhibitory control task
Review the complete result tables and limitations in the official record.
Open official results ↗Research locations (1)
The overall study status and a local site’s status can differ. Confirm that location’s availability before traveling.
1 locations
The College of Research Methodology and Cognitive Science (RMCS)Chon Buri, Changwat Chon Buri, ThailandStatus unknown
Study team and timeline
- Lead sponsor
- Burapha University
- Study start
- Oct 26, 2026 Estimated
- Primary completion
- Dec 28, 2026 Estimated
- Study completion
- Feb 28, 2027 Estimated
- First posted
- Nov 10, 2026 Actual
- Last updated
- Nov 10, 2026 Actual
Official study contacts
No central contact is listed. Check the locations and the official record.
Official study title
Effect of Thai Food-Specific Inhibition Control Training on Psychophysiological Outcomes in Thai Adults With Obesity: A Randomized Controlled Event-Related Potential (ERP) Study
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Source: ClinicalTrials.gov API v2. Information is submitted by sponsors and investigators. NLM does not approve the safety or science of all listed studies. Registry disclaimer.
Retrieved: Nov 12, 2026 · Last registry update: Nov 10, 2026