Abstract

Background: Nutrient‐poor snacking has substantially contributed to the obesity epidemic, particularly in young people. Purpose: To examine the effects of a nutrient‐rich, high‐protein (HP) snack vs. a typical nutrient‐poor, high‐fat (HF) snack on appetite control, satiety, and subsequent food intake in young people. Design: Thirty‐two healthy adolescents (age: 17 ± 1 y) randomly consumed 260 kcal afternoon snacks containing HP (26 g protein; 6 g fat; 27 g CHO) or HF (4 g protein; 12 g fat; 32 g CHO) or had no snack (NS) for 3 days. On day 4, the participants came to our facility 2h prior to their respective snack pattern to complete the 8h testing day. Pre and post‐snack appetite questionnaires were completed throughout the day until dinner was voluntarily requested. Ad libitum dinner and evening snacks were provided. Results: Although both snacks reduced hunger, desire to eat, and prospective food consumption and increased fullness vs. NS (all, P<0.001), the HP snack led to greater reductions in hunger vs. HF (P<0.05). Only the HP snack delayed subsequent eating vs. NS (P<0.05). Lastly, the HP snack reduced evening snacking by ‐445 ± 145 kcal, particularly from high fat and high sugar foods vs. NS (P<0.005), while HF had no effect. Conclusions: The daily consumption of a high‐protein afternoon snack containing soy led to improved appetite control, satiety, and reduced unhealthy evening snacking in young people.Grant Funding Source: Supported by DuPont Nutrition & Health

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