Combined Effects of Dietary Supplementation With Dietary Resistant Starch (RS) and Whey Protein on Resting Energy Expenditure and Blood Sugar and Insulin Responses in Lean and Obese Men and Women

Consumed separately, resistant starch (RS) and whey protein (WP) favorably affect energy metabolism and gut hormones, as well as suppress feelings of hunger. These findings are important because release of certain gut hormones (i.e., GIP) is associated with a lower resting energy expenditure (REE) in healthy humans. Interestingly, a recent study showed that ingestion of RS reduces postprandial GIP and increases postprandial REE and fat utilization in healthy men and therefore may be an effective strategy in weight management. Thus, there is a need to replicate these findings in a healthy cohort of lean and obese women and men.

The purpose of this study was to examine the effects of RS on the number of calories burned after eating a meal, as well as specific hormones that are released from the stomach and intestines following meal ingestion in healthy lean and obese women and men. Investigators used a single ingestion of a meal supplemented with or without the resistant starch and whey protein.