Effects of Different Dietary Models on Eating Behavior and Obesity Management in Overweight and Obese Individuals: A Randomized Controlled Trial

Not Applicable

Active, not recruiting

• Conditions: To Examine the Effects of Mediterranean Diet, Time-restricted Feeding and Standard Diet Application on Obesity Management in Overweight and Obese Individuals

• Registration Number: NCT07055620
• Lead Sponsor: Selcuk University

Brief Summary

The aim of this study is to examine the effects of different diet models (Mediterranean diet, time-restricted feeding and standard diet application) applied to overweight and obese individuals on eating behavior and obesity management.

Sub-objectives can be listed as; Effects of different diet models on body composition, Effects of different diet models on dietary intake, Effects of different diet models on biochemical parameters (such as blood sugar, insulin resistance, lipid profile).

Detailed Description

As a result, this study aims to contribute to the development of individualized nutrition counseling programs by determining effective diet strategies in obesity.

Study Timeline

• Study Start: 2025-04-18
• Status Verified: 2025-06
• Primary Completion: 2025-06-18
• Study First Submitted: 2025-06-19
• Study First Submitted QC: 2025-06-28
• Last Update Submitted: 2025-06-28
• Study First Posted: 2025-07-09
• Last Update Posted: 2025-07-09
• Study Completion: 2025-09-30

Recruitment & Eligibility

• Status: ACTIVE_NOT_RECRUITING
• Sex: All
• Target Recruitment: 75

Inclusion Criteria

• Being between 20-49 years old
• Having a BMI value between 25 kg/m2- 35 kg/m2
• Not having conditions that impair reality assessment ability and cognitive functions, preventing interviews or filling out scales
• Being literate
• Having a blood test done by a primary care physician within the last seven days
• Agreeing to participate in the study and signing the informed consent form

Exclusion Criteria

• Pregnant and breastfeeding women,
• Those who could not attend one or more interview sessions,
• Women who have entered menopause,
• Individuals who want to apply another diet model,
• Individuals who have a pacemaker or defibrillator implanted due to the theoretical possibility of interference with device activity due to the current field caused by impedance measurements,
• Those who have any chronic disease and are on a diet,
• Those who regularly use medications that affect metabolism,
• Those who use insulin and oral antidiabetic medications,
• Those who have allergies or intolerances to any food components of the Mediterranean diet (walnuts, hazelnuts, peanuts, almonds, etc.),
• Those who use vitamin/mineral supplements,
• Those who have a psychiatric disease diagnosed by a physician.
• In order to understand the effectiveness of the diet, individuals will be asked to maintain their physical activity levels. Therefore, individuals who want to increase their physical activity levels in addition to the applied diet will not be included in the study.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Diet Satisfaction Scale	12 weeks	The validity and reliability study of the scale, originally named "Diet Satisfaction Scale", developed by Jospe and his colleagues in 2020, was conducted by Eskici and his colleagues in 2021 (Jospe et al 2020, Eskici and Yılmaz 2021). The items of the scale, which is used to evaluate issues such as hunger, desire to prepare food, enjoyment of the diet, following the diet at home and away from home, contribution to physical health, food variety, budget suitability and continuity, which affect the satisfaction of the clients with any diet, include 9-item five-point Likert-type (1=strongly disagree, 2=disagree, 3=undecided, 4=agree, 5=strongly agree) answer options. Only item 1 is scored in reverse (1=5, 2=4, 3=3, 4=2 and 5=1). The maximum score that can be obtained from the scale is 45. A high score indicates that diet satisfaction increases.
Three Factor Eating Questionnaire (TFEQ-21)	12 weeks	In order to determine the eating behavior of the individuals participating in the study, the 21-item Three-Factor Eating Scale, which was validated for Turkish culture by Karakuş et al. in 2016, will be used. All of the items are four-point Likert-type and the answers are as follows; 1= Definitely false, 2= Mostly false, 3= Mostly true and 4= Definitely true. This scale measures eating behavior with three sub-dimensions: cognitive restraint (CRI), uncontrolled eating (URI) and emotional eating (EI). Items 1, 5, 11, 17, 18, and 21 measure CRI and evaluate the tendency to control food intake to maintain body weight and body shape. Items 3, 6, 8, 9, 12, 13, 15, 19, and 20 measure CRI and evaluate the tendency to lose control over eating when hungry and exposed to an external stimulus. EI; Items 2, 4, 7, 10, 14 and 16 measure and evaluate the relationship between a negative mood such as loneliness, demoralization or anxiety and overeating. It is recommended to use the converted scale scor

Trial Locations

Locations (1)

Eda Ocak Nutrition and Diet Consultancy; 🇹🇷 Konya, Selçuklu, Turkey