Meal Frequency and Body Composition in Obese Adults Presenting for a Weight-Loss Program: A Cross-Sectional Study

Area of Science:

• Nutrition Science
• Obesity Research
• Body Composition Analysis

Background:

• Meal frequency is a significant consideration for individuals participating in weight-loss programs.
• Understanding the impact of different eating patterns on body composition is crucial for effective weight management strategies.

Purpose of the Study:

• To compare body fat percentage and muscle percentage across three distinct meal frequency patterns: small frequent meals (SFM), three regular meals (3RM), and three large meals (3LM).
• To investigate the association between self-reported meal frequency and body composition outcomes in adults with obesity enrolled in a weight-loss program.
• To test the hypothesis that meal frequency is not associated with differences in body composition after adjusting for age and sex.

Main Methods:

• A cross-sectional study involving 320 adult patients with obesity seeking weight loss.
• Body mass composition was assessed, and percentages of fat and muscle were calculated.
• Analysis of Covariance (ANCOVA) was employed to compare body composition differences based on meal frequency, controlling for age and sex.

Main Results:

• The study included 320 participants: 153 in SFM, 95 in 3RM, and 70 in 3LM groups.
• Mean fat percentage was similar across groups (SFM: 47.1%, 3RM: 46.3%, 3LM: 46.1%; p=0.586).
• Mean muscle percentage also showed no significant differences (SFM: 49.4%, 3RM: 51.0%, 3LM: 51.1%; p=0.142).

Conclusions:

• Self-reported eating patterns, specifically meal frequency, are not associated with altered body mass composition in individuals undergoing weight loss.
• These findings suggest that focusing on meal timing or frequency may not be the primary driver for body composition changes in this population.