Low, moderate, or high protein yogurt snacks on appetite control and subsequent eating in healthy women
2013
Douglas, Steve M. | Ortinau, Laura C. | Hoertel, Heather A. | Leidy, Heather J.
This study assessed whether afternoon snacks, varying in protein content, influence appetite-control and eating initiation. Fifteen healthy women (age: 26±2y) randomly consumed 160kcal afternoon yogurt snacks containing Low (LP), Moderate (MP), or High (HP) protein (5,14,24g protein, respectively) or had no snack (NS) for 3days. On day 4, the volunteers came to our facility to consume a standardized lunch. The respective snack pattern was completed 3h post-lunch. Perceived sensations were measured every 30min until dinner was voluntarily requested. An ad libitum dinner was then provided. Snacking, regardless of protein content, led to reduced hunger and increased fullness, which were sustained up to 120min post-snack vs. NS (all, p<0.05). Between snacks, hunger was lower and fullness was higher throughout post-snack following HP vs. LP (p<0.05). Snacking delayed the onset of eating vs. NS (all, p<0.05). Specifically, dinner was requested at 124±7min following NS, 152±7min with LP, 158±7min following MP, and 178±7min post-snack for HP. Between snacks, HP led to the latest request time vs. LP (p<0.001) and MP (p<0.05). Although the energy content consumed at dinner was lower following the yogurt snacks vs. NS, the 160kcal snacks were not fully compensated for at this meal. In conclusion, an afternoon snack of Greek yogurt, containing 24g protein, led to reduced hunger, increased fullness, and delayed subsequent eating compared to lower protein snacks in healthy women.
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