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Purpose: This study aimed to evaluate and compare the effects of intermittent fasting (IF) and the Mediterranean diet (MD) on weight loss in obese adults.
Methods: A total of 120 adults diagnosed with obesity were enrolled. Baseline data on physical activity and dietary intake were collected through structured interviews. Participants were randomly assigned to two groups for a 4-week intervention. The IF group followed a time-restricted eating schedule (16:8), while the MD group followed a structured plan of three main meals and three snacks daily. Both diets included a 500-calorie daily reduction from estimated energy needs. Anthropometric measurements were recorded at baseline and week 4.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| intermittent fasting diet intervention group | Experimental | 4 week time restricted intermittent fasting diet protocol |
|
| Mediterranean diet intervention group | Experimental | 4 week mediterranean diet protocol |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Intermittent Fasting Diet | Other | Participants follow a time-restricted eating pattern for 4 weeks, consuming all meals within an 8-hour eating window (from 1:00 PM to 9:00 PM) and fasting for the remaining 16 hours each day. During the feeding window, they consume two main meals and one snack based on ad libitum intake, without specific calorie restriction. Dietary guidance is provided at the start and mid-point of the protocol by a registered dietitian. |
| Measure | Description | Time Frame |
|---|---|---|
| Body weight (kg) | Body weight is measured with using the TANITA BC-418 body composition analyzer. Participants are weighed barefoot, in light clothing, and measurements are recorded in kilograms. | Baseline and Week 4 |
| Measure | Description | Time Frame |
|---|---|---|
| Body Mass Index (kg/m²) | BMI is computed as weight in kilograms divided by height in meters squared (kg/m²) | Baseline and Week 4 |
| Measure | Description | Time Frame |
|---|---|---|
| Body height (cm) | Height is measured once at baseline using a wall-mounted stadiometer. Participants stand barefoot, with heels together, arms at the sides, and head positioned in the Frankfurt horizontal plane. The measurement is recorded to the nearest 0.1 centimeter and converted to meters. | Baseline only |
| Body Fat Percentage |
Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| European University of Lefke | Lefka | 99770 | Cyprus |
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| Type | Includes Protocol | Includes SAP | Includes ICF | Document Label | Document Date | Document Uploaded Date | Document File Name |
|---|---|---|---|---|---|---|---|
| ICF | No | No | Yes | Informed Consent Form | Jun 1, 2022 | Nov 18, 2025 | ICF_000.pdf |
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| ID | Term |
|---|---|
| D015431 | Weight Loss |
| D009765 | Obesity |
| D000093763 | Intermittent Fasting |
| ID | Term |
|---|---|
| D001836 | Body Weight Changes |
| D001835 | Body Weight |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
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| ID | Term |
|---|---|
| D038441 | Diet, Mediterranean |
| ID | Term |
|---|---|
| D000095500 | Diet, Plant-Based |
| D004035 | Diet Therapy |
| D044623 | Nutrition Therapy |
| D013812 | Therapeutics |
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|
| Mediterranean Diet | Other | Participants follow a 4-week Mediterranean diet protocol that is adapted from the PREDIMED criteria and the MedDietScore index. The diet emphasizes high consumption of vegetables, fruits, legumes, whole grains, nuts, and olive oil; moderate intake of fish and poultry; and limited consumption of red meat, dairy products, and sweets. A registered dietitian provides dietary counseling sessions at the beginning and midway through the intervention. |
|
Body fat percentage is measured at baseline and Week 4 using the TANITA BC-418 body composition analyzer |
| Baseline and week 4 |
| Fat Free Mass (kg) | Fat free mass is assessed using bioelectrical impedance analysis with TANITA BC-418 | Baseline and Week 4 |
| Total Body Water Percentage | Total body water percentage is assessed using bioelectrical impedance analysis with TANITA BC-418. | Baseline and Week 4 |
| Waist Circumference (cm) | Waist circumference is measured using a non-elastic, flexible measuring tape. The measurement is taken at the midpoint between the lower margin of the last palpable rib and the top of the iliac crest, while the participant stands upright with feet close together and breathes out normally. | Baseline and Week 4 |
| Hip Circumference (cm) | Hip circumference is measured with using a non-elastic measuring tape. The measurement is taken around the widest portion of the buttocks, with the participant standing upright and feet together. | Baseline and Week 4 |
| D050177 | Overweight |
| D044343 | Overnutrition |
| D009748 | Nutrition Disorders |
| D009750 | Nutritional and Metabolic Diseases |
| D005215 | Fasting |
| D005247 | Feeding Behavior |
| D001519 | Behavior |
| D004032 |
| Diet |
| D009747 | Nutritional Physiological Phenomena |
| D000066888 | Diet, Food, and Nutrition |
| D010829 | Physiological Phenomena |