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Effects of Meal Energy Density on Body Measures and Metabolism in Women

NCT07066618 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 28

Last updated 2025-07-15

No results posted yet for this study

Summary

This study investigates whether the timing of energy intake during the day-specifically consuming more calories at breakfast or at dinner-affects body measurements, blood sugar levels, cholesterol, and feelings of hunger in women who are overweight or obese.

A total of 28 women participated in the study and were randomly assigned to one of two diet plans: one group consumed half of their daily calories at breakfast, while the other consumed them at dinner. Both groups followed a calorie-restricted diet for six weeks.

The goal of this research is to understand whether eating more in the morning rather than in the evening leads to better outcomes for weight control and metabolic health. Findings from this study may help health professionals make more effective meal timing recommendations for weight loss and improving blood sugar regulation.

Conditions

  • Obesity
  • Overweight
  • Appetite Regulation
  • Meal Timing
  • Circadian Rhythm
  • Metabolic Health

Interventions

BEHAVIORAL

Breakfast-Loaded Hypocaloric Diet

Participants in this group consumed a hypocaloric diet in which 50% of daily energy intake was provided at breakfast, 35% at lunch, and 15% at dinner. Meal times were standardized as follows: breakfast (7:00-9:00), lunch (12:00-14:00), and dinner (18:00-20:00). The diet was individually tailored and provided 20% fewer calories than the participants' total energy expenditure. Macronutrient distribution followed recommended guidelines: 45-60% carbohydrates, 10-20% protein, and 20-35% fat.

BEHAVIORAL

Dinner-Loaded Hypocaloric Diet

Participants in this group consumed a hypocaloric diet in which 15% of daily energy intake was provided at breakfast, 35% at lunch, and 50% at dinner. Meal times were standardized as follows: breakfast (7:00-9:00), lunch (12:00-14:00), and dinner (18:00-20:00). The diet was individually tailored and provided 20% fewer calories than the participants' total energy expenditure. Macronutrient distribution followed recommended guidelines: 45-60% carbohydrates, 10-20% protein, and 20-35% fat.

Sponsors & Collaborators

  • Melike Nur Eroğlu

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
20 Years
Max Age
45 Years
Sex
FEMALE
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2023-11-15
Primary Completion
2024-03-20
Completion
2024-03-25

Countries

  • Turkey (Türkiye)

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07066618 on ClinicalTrials.gov