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Whey and Pea Protein Influence Energy Metabolism and Appetite Response to a Greater Extent Than Beef Protein
Author(s) -
Neumann Brianna L,
Cambias Lauren,
Mitchell Charlene,
Silva Enela,
Baum Jamie I
Publication year - 2016
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.30.1_supplement.415.2
Subject(s) - postprandial , appetite , crossover study , food science , zoology , obesity , area under the curve , analysis of variance , chemistry , medicine , endocrinology , biology , insulin , placebo , alternative medicine , pathology
More than 30% of young adults in the US are obese. A primary contributor to obesity is an unhealthy diet related to an imbalance of macronutrients. Diets higher in protein (PRO) are associated with health benefits such as increased energy expenditure (EE) and reduced food intake. The objective of this pilot study was to determine if protein source at breakfast influences EE in young men (n=5; ages 18–35). Participants consumed four isocaloric protein‐based beverages (whey (WP), pea (PP), beef (BP); 275 kcal‐62%PRO:23%CHO:15% Fat) for breakfast in randomized, crossover design with a one‐week washout period between beverages. Each test day EE, appetite and food preference were assessed at 0, 15, 30, 60, 120, 180, and 240 min postprandial. Data was analyzed using a 2‐way ANOVA for the effect of protein source over time. One‐way ANOVA was used to analyze area under the curve (AUC). Resting EE AUC was 8% lower in BP vs PP and 5% lower vs WP. Thermic effect of feeding AUC was 77% lower ( P = 0.08) in BP compared to WP; PP was 43% lower than WP. Postprandial carbohydrate oxidation was higher with PP (31%) compared to WP and there was no difference between BP and WP. Postprandial fat oxidation was 23% higher in WP vs BP and PP. WP was more satiating compared to BP and PP, however participants had a higher craving for sweet foods following PP and a higher desire for a snack following BP. Taken together, these data suggest that protein source (animal versus plant) is not a predictor of postprandial EE and appetite response. Support or Funding Information Arkansas Biosciences Institute