Motivational Interviewing for Overweight and Obese Adults at Healthy Life Centers
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Motivational Interviewing, Routine Nutrition Counseling.
- Who it may be relevant to
- Registry conditions: Overweight, Obesity. Basic parameters: from 18 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Turkey (Türkiye)
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Effect of Motivational Interviewing on Anthropometric Measurements, eHealth Literacy, and Healthy Eating Attitudes Among Overweight and Obese Adults Attending Healthy Life Centers: A Randomized Controlled Trial
Overview
Overweight and obesity are major public health problems associated with increased morbidity and mortality. Motivational interviewing is a patient-centered counseling approach that may improve lifestyle behaviors and weight management. This randomized controlled trial aims to evaluate the effect of motivational interviewing on anthropometric measurements, eHealth literacy, and healthy eating attitudes among overweight and obese adults attending Healthy Life Centers in Sakarya, Türkiye. Participants will be randomly assigned to either a motivational interviewing intervention group or a routine nutrition counseling control group. Outcomes will be assessed at baseline and after the intervention.
Detailed description
Overweight and obesity are increasing worldwide and contribute substantially to chronic diseases, reduced quality of life, and healthcare costs. Although lifestyle modification remains the cornerstone of obesity management, long-term adherence to healthy eating and physical activity recommendations remains challenging. Motivational interviewing is an evidence-based behavioral counseling method designed to strengthen an individual's motivation and commitment to behavior change.
This study is a single-blind, parallel-group, randomized controlled trial conducted in Healthy Life Centers affiliated with the Sakarya Provincial Health Directorate in Türkiye. Eligible adults with overweight or obesity will be randomly allocated to either an intervention group receiving four structured motivational interviewing sessions in addition to routine nutrition counseling or a control group receiving routine nutrition counseling alone.
Anthropometric measurements, including body weight, height, body mass index, waist circumference, hip circumference, and waist-to-hip ratio, will be collected. Participants will also complete the eHealth Literacy Scale (eHEALS) and the Healthy Eating Attitude Scale before and after the intervention.
The primary objective is to determine whether motivational interviewing improves anthropometric outcomes compared with routine care. Secondary objectives include evaluating changes in eHealth literacy and healthy eating attitudes. Findings from this study may contribute to the development of evidence-based behavioral interventions for overweight and obesity management in primary healthcare settings.
Interventions
- Behavioral Motivational Interviewing
Participants will receive four structured motivational interviewing sessions in addition to routine nutrition counseling. The first and fourth sessions will be delivered face-to-face, while the second and third sessions will be conducted by telephone or online. The intervention is based on motivational interviewing principles and aims to improve healthy eating behaviors, eHealth literacy, and anthropometric outcomes among overweight and obese adults. - Behavioral Routine Nutrition Counseling
Participants will receive routine nutrition counseling provided by Healthy Life Centers according to standard clinical practice without motivational interviewing.
Primary outcome measures
- Change in Body Weight [Time frame: Baseline and 12 weeks]
Secondary outcome measures (5)
- Change in Body Mass Index (BMI) [Time frame: Baseline and 12 weeks]
- Change in Waist Circumference [Time frame: Baseline and 12 weeks]
- Change in Waist-to-Hip Ratio [Time frame: Baseline and 12 weeks]
- Change in eHealth Literacy [Time frame: Baseline and 12 weeks]
- Change in Healthy Nutrition Attitudes [Time frame: Baseline and 12 weeks]
Eligibility criteria
Inclusion criteria
- Adults aged 18 years and older.
- Body mass index (BMI) ≥25 kg/m² (overweight or obese).
- Registered at one of the participating Healthy Life Centers in Sakarya Province.
- Able to communicate in Turkish.
- Willing to participate and provide written informed consent.
- Able to participate in face-to-face and telephone/online counseling sessions.
Exclusion criteria
- Pregnancy or breastfeeding.
- Severe psychiatric disorders or cognitive impairment affecting participation.
- Serious medical conditions preventing participation in lifestyle counseling.
- Currently participating in another behavioral or weight management intervention.
- Inability to complete follow-up assessments.
- Withdrawal of informed consent at any time.
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Allocation
- Randomized
- Model
- Parallel assignment
- Masking
- Single blind
- Primary purpose
- Treatment
Study locations
Turkey (Türkiye) · 3 centers
- Adapazarı Healthy Life Center — Sakarya
- Sapanca Healthy Life Center — Sakarya
- Serdivan Healthy Life Center — Sakarya
Identifiers
NCT: NCT07745231 · SAU-PHD-MI-OB-2026