Weight Loss Clinical Trial
Official title:
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
Recent evidence shows that dietary supplementation with resistant starch (RS) increases fat catabolism and resting energy expenditure and decreases plasma insulin and glucose responses as well as the gut-derived hormone, glucose-dependent insulinotropic polypeptide (GIP). Consumption of whey protein has also been shown to increase energy expenditure and favorably affect gut hormones. Thus, investigators tested consumption of both RS and whey protein on energy expenditure and gut hormones in lean and obese women and men.
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.
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