Participants were instructed to drink 5 oz. of fluid per day with each muffin in addition to the 9 oz. juice mixture and their usual fluid intake; during the baseline segment they were to drink an additional 28 oz. of fluid per day as this amount was provided with the supplements. Subjects could reduce their intake of dietary fiber once during the study if they reported that they were not tolerating the supplements, and the reduced amount was maintained for the remainder of the study. The reduced amount of fiber was 10 g of total fiber per day and was distributed in the juice and muffin proportionally to the original supplement.