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Glycemic and insulinemic responses to energy bars of differing macronutrient composition in healthy adults.

Steven R. Hertzler, Yeonsoo Kim

Med Sci Monit 2003; 9(2): CR84-90

ID: 4756


BACKGROUND: This study investigated how energy bars of differing macronutrient composition affect postprandial glycemia and insulinemia in normal subjects compared with white bread and chicken breast controls. MATERIAL/METHODS: A total of 20 healthy adult subjects were recruited to participate in this randomized block protocol. After an overnight fast, subjects were fed 60-g portions of one of 5 meals, which were as follows: low carbohydrate bar (Atkins Advantage Bar, LC), moderate carbohydrate bar (Balance Bar, MC), high carbohydrate bar (Power Bar, HC), white bread (WB), and chicken breast (CHI). Capillary fingerstick and venous blood samples were analyzed for glucose and insulin concentrations, respectively, at baseline and at 15, 30, 45, 60, 90 and 120 minutes after start of the test meal. RESULTS: Compared with WB, plasma glucose area under the curve (AUC) for the meals was: 71% (P

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