In a randomized , balanced , crossover trial , 18 healthy male participants consumed the following 3 skimmed-milk-based test products ( all 110 kcal ) : 2 drinks aerated to foams by whipping ( to 490 mL ) , one drink that was stable in the stomach [ stable foam ( SF ) ] , and one drink that was less stable in the stomach [ less-stable foam ( LSF ) ] , and a nonaerated drink [ liquid control ( LC ) ; 140 mL ] .