|No, that's not a photo from the study.|
Why should it? Well, as Amelinda et al. (2016) point out, "whey and casein protein have different digestion rates" it is thus only logical to assume that combining them may result in a prolonged satiating effect.
To test this hypothesis, the Indonesian researchers conducted a randomized, single-blind, cross-over study with 12 healthy, normal-weight men who received a standardized breakfast (tuna sandwich, which consisted of white bread and tuna sandwich spread, prepared to fulfill 20% of the individual DER with 16% of the energy coming from protein, 22% from fat and 62% from carbohydrate) followed by one of the three preloads in form of a milk beverage (140kcal) containing 15 g protein with whey-to-casein protein ratios of 20:80, 50:50, or 80:20.
|Table 1: Energy and macronutrient content of the test beverages (Amelinda. 2016).|
fat and carbohydrate, respectively) and (b) by the means of dietary recalls of food and drinks consumed during the remainder of the experimental day.
|Figure 1: Mean subsequent energy intake during: (a) Lunch; (b) Remainder of the day; (c) Total energy intake. Error bars show 95% confdence interval (Amelinda. 2016).|
- Angela, Amelinda, et al. "Effect of Whey-to-Casein Protein Ratio in Chocolate-Vanilla Milk Beverage on Satiation and Acute Energy Intake." Kasetsart J. (Nat. Sci.) 49 (2016): 738 - 746