EFFECT OF A 90-DAY SATIETY-BASED BEHAVIORAL LIFESTYLE INTERVENTION ON WAIST CIRCUMFERENCE: A PROSPECTIVE LONGITUDINAL OBSERVATIONAL ANALYSIS
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Abstract
Introduction
Central adiposity, assessed using waist circumference, is associated with increased metabolic and cardiovascular risks. Behavioral dietary interventions that promote satiety without strict caloric restriction may offer a sustainable approach to improving anthropometric outcomes in the long term.
Objective
To evaluate changes in waist circumference following participation in a structured 90-day satiety-based behavioral lifestyle intervention program among adult women over the course of the intervention period.
Methods
This study was conducted as a prospective longitudinal observational study during a structured 90-day behavioral lifestyle intervention program. The study included 120 adult female participants (aged ≥18 years) who completed the intervention program. A subset of 69 participants provided complete weekly waist circumference records for longitudinal trend analysis.
The intervention emphasized a satiety-based eating approach defined as a non-restrictive dietary pattern encouraging food intake until comfortable fullness without calorie counting or strict portion restriction. Waist circumference measurements were collected prospectively at baseline, weekly intervals throughout the intervention period, and at post- intervention assessment. Statistical analysis was performed using paired t-test, with statistical significance set at p<0.05.
Results
The satiety-based behavioral intervention demonstrated a significant reduction in waist circumference, decreasing from
40.43 ± 4.28 inches at baseline to 37.29 ± 4.61 inches at Day 91. The mean reduction in waist circumference was 3.14±2.77 inches, with a maximum observed reduction of 11.0 inches.
Longitudinal trend analysis demonstrated progressive reduction in waist circumference over the intervention duration. Paired t-test analysis confirmed statistically significant reduction in waist circumference following participation in the intervention program (t (119) = 12.41, p < 0.001).
Conclusion
This prospective longitudinal observational study demonstrated significant reduction in waist circumference following participation in a structured satiety-based behavioral lifestyle intervention program. Further controlled studies are warranted to validate and extend these findings.
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