An interventional study of Motivational Interviewing in Obesity & Overweight, sponsored by Istinye University. Not yet recruiting at 1 site in Turkey (Türkiye). Open to participants aged 18 Years to 64 Years. Per ClinicalTrials.gov, last updated 2026-08-18.
Sponsored by Istinye University · Not applicable, Interventional, and Prevention
Among 352 studies in Obesity with a site in Turkey — 72 open to participants now, 90 under way, 16 of them phase 3. Obesity · Turkey.
Among the 352 studies in Obesity with a site in Turkey, this one is the 100th largest by planned enrollment of the 191 interventional ones, is one of 59 that started in 2026, is one of 160 with no phase, reaches primary completion later than 41 of the 89 other live ones, and was the 318th registered.
11,522 studies on the registry are indexed under Obesity; 2,033 are open to participants now.
This study's planned enrollment of 60 is below the median of 67 across 9,006 interventional studies indexed under Obesity.
Browse Obesity studies →72 of the 352 studies in Obesity with a site in Turkey are open now, in 12 countries. Each count lists the studies.
Of the 1,336 Obesity studies recruiting now, 377 (28%) set no upper age limit and 856 (64%) stop at 75 or younger; 168 take children under 18; 491 take healthy volunteers.
This study: 18 Years to 64 Years · all sexes · no healthy volunteers.
The full table on the hub →352 studies; the count open now beside each. This study's row is marked.
First in 2005; this study’s year is marked. 59 started in 2026.
Median enrollment 64 across the 191 interventional studies, 82 across the 160 observational. Of the 236 that completed or were terminated, 7 (3%) have results posted.
34 of 352 have an industry lead sponsor. The 10 most frequent:
Istinye University is the lead sponsor of 221 studies on the registry; 94 are open to participants now.
Istinye University has 6 studies filed under Obesity — fewer than ten, so there is no comparison to draw.
34 of the studies in Obesity with a site in Turkey that are under way reach primary completion within a year, 1 of them phase 3. Phase 3 first, then by date:
| Study | Primary completion |
|---|---|
| NCT05556512Phase 3Eli Lilly and CompanyA Study of Tirzepatide (LY3298176) on the Reduction on Morbidity and Mortality in Adults With Obesity | 2027-10 |
| NCT07769736Istinye UniversityMotivational Interviews Based on the Five-Step (5A) Model on Obesity Risk | 2026-11 |
| NCT07652151Fundación Pública Andaluza para la gestión de la Investigación en SevillaUNMASK: Unveiling the Pathobiology of Metabolic Dysfunction-Associated Steatotic Liver Disease for the Discovery of Novel Therapeutics and Biomarkers | 2026-11 |
| NCT07878299Sultan Abdulhamid Han Training and Research Hospital, Istanbul, TurkeyComparison of Segmental Body Composition Characteristics in Lipedema and Obesity | 2026-11-20 |
| NCT07846956Istanbul Saglik Bilimleri UniversityNAION in Non-Diabetic Obese Patients Using GLP-1 Receptor Agonists: A Real-World Study | 2026-11-30 |
Among the 352 studies in Obesity with a site in Turkey, from their registry updates:
The goal of this clinical trial is to learn if a structured motivational interviewing program based on the Five-Step (5A) model works to promote healthy lifestyle behaviors in individuals at high risk of obesity. It will also learn about the effects on anthropometric measurements and physical activity levels. The main questions it aims to answer are:
Participants will:
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
BMI (body mass index)
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Experimental Group: Participants receive five structured motivational interviewing sessions over a three-month intervention period, with anthropometric measurements repeated at each session.
Behavioral: Motivational Interviewing
Control Group: Participants are monitored with standard routine care over a three-month intervention period without motivational interviewing sessions.
Motivational Interviewing Techniques and the Five-Step (5A) Model Framework
Change in Body Mass Index (BMI)
Changes in body mass index measured in kg/m² from baseline to the end of the intervention period.
Time frame: Until the end of five motivational interviews that will take place over a three-month period
Change in Body Weight
Changes in body weight measured in kilograms (kg) from baseline to the end of the intervention period.
Time frame: Until the end of five motivational interviews that will take place over a three-month period
Change in Waist Circumference
Changes in waist circumference measured in centimeters (cm) from baseline to the end of the intervention period.
Time frame: Until the end of five motivational interviews that will take place over a three-month period
University of Rhode Island Change Assessment (URICA) Scale Score
Changes in readiness score measured by the 32-item University of Rhode Island Change Assessment (URICA) scale. Each item is rated on a 5-point Likert scale ranging from 1 to 5, where higher scores indicate greater readiness for change.
Time frame: Until the end of five motivational interviews that will take place over a three-month period
Change in Physical Activity Level
Changes in physical activity levels measured by the General Practice Physical Activity Questionnaire (GPPAQ) instrument from baseline to the end of the intervention period, categorizing participants into four activity levels (active, moderately active, moderately inactive, and inactive) based on occupational physical activity and exercise/cycling hours.
Time frame: Until the end of five motivational interviews that will take place over a three-month period.
Qualitative Assessment of Motivational Factors
Qualitative themes encompassing awareness, motivational barriers, health responsibility, and self-efficacy assessed via in-depth interviews.
Time frame: Until the end of five motivational interviews that will take place over a three-month period.
Plan to share: Yes — The datasets generated and/or analyzed during the current study will not be publicly available due to participant privacy but will be available from the corresponding author on reasonable request after the publication of the main trial results. De-identified participant data will be shared subject to approval.
No publications or documents are linked to this record.
Start is estimated for Sep 2026; primary completion for Nov 2026, 2 months later.
Of 3,680 non-industry interventional studies with no phase under Obesity, half reached primary completion within 23 months of starting (the median), counting those still running; a quarter within 10 and three quarters within 43. This study's planned 2 months is below that.
Counting every sponsor, half of 3,843 studies reached it within 22 months; a quarter within 10 and three quarters within 42.
How these figures are worked out, and which studies are left out of them.
This study is not yet recruiting, as verified in Aug 2026. You cannot join it, but the record below documents what was studied.
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