Introduction. The current study aimed to assess profiles of peptide YY and ghrelin, visual analog scales (VAS) for hunger and satiety, and ad libitum intake in obese and non-obese women.
Methods. This open-label non-randomized interventional study involved obese (BMI ≥ 25–35 kg/m2) and non-obese (BMI 18.5–23.0 kg/m2) women subjects. Levels of peptide YY and ghrelin were determined by radioimmunoassay and enzyme-linked immunosorbent assay (ELISA), respectively, while the degrees of hunger and satiety were measured using visual analog scale (VAS) questionnaires. The results were compared in fasting condition and in 15, 60, 120, and 180 minutes after breakfast with balance composition formulation. This study also compared the ad libitum intake within 4 hours after breakfast.
Results. As compared to the non-obese group, the obese group have significantly lower levels of peptide YY in fasting, and in 15, 60, 120, and 180 minutes post-prandial, and smaller AUC (Area Under the Curve) of fasting peptide YY. Furthermore, the obese group showed significantly higher ad libitum intake. The obese group also have lower levels of ghrelin and lower VAS for hunger and higher in VAS for satiety as compared to the non-obese group.
Conclusions. There were significant differences in peptide YY level, 4 hours after breakfast ad libitum intake, ghrelin level, and VAS for hunger and satiety, between obese group and non-obese one.
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