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Title: SHORT-TERM SATIETY AND GLYCEMIC RESPONSE AFTER CONSUMPTION OF WHOLE GRAINS VARYING IN THE AMOUNT OF BETA-GLUCAN IN OVERWEIGHT ADULTS.

Author
item Kim, Hyunsook
item Behall, Kay
item Conway, Joan

Submitted to: North American Association for the Study of Obesity
Publication Type: Abstract Only
Publication Acceptance Date: 7/7/2005
Publication Date: 9/1/2005
Citation: Kim, H., Behall, K.M., Conway, J.M. 2005. Short-term satiety and glycemic response after consumption of whole grains varying in the amount of beta-glucan in overweight adults. North American Association for the Study of Obesity 2005 Annual Meeting. Obesity Research. 2005; 13:A219.

Interpretive Summary:

Technical Abstract: Regulation of satiety with soluble fiber has been proposed as a strategy to reduce weight gain. To determine the effect of a meal with and without the soluble fiber beta-glucan (BG) on glucose response and satiety, four isocaloric test meals were fed to overweight subjects (women, n = 10; men, n = 9; BMI = 30.1 +/- 0.8; age = 53.9 y +/- 2.2 y). Using a randomized crossover design, the treatments included: glucose, wheat (0 g of beta-glucan (0BG)), wheat-barley mixture (1 g of beta-glucan (1BG)), and barley (2 g of beta-glucan (2BG)) served as cooked cereal. Macronutrient and water intake were controlled across all treatments. Control diets were fed for 1 day prior to the test meals. Visual analog scales (VAS) were used to determine perceived hunger, fullness, and satisfaction. Energy intake of a standardized lunch was measured, at 2 hour after consumption of the test meals. Blood glucose and VAS ratings were measured periodically. In women, peak glucose responses and area under the curve (AUC) were significantly reduced after consumption of the meal with 2BG compared with 0BG or 1BG. VAS ratings for “Hunger” and “How much I can eat” were significantly reduced at 15 and/or 30 min after consumption of 1BG and 2BG compared with 0BG. In men, the acute effects of beta-glucan on glucose and VAS ratings of satiety were weak. Short-term energy intake was not affected by beta-glucan intake in both women and men. These data indicate that acute reduction of the glycemic response and hunger ratings in overweight women requires consumption of at least 2 g and 1 g of beta-glucan per meal, respectively. However, in overweight men greater amounts of beta-glucan per meal may be required to achieve substantial glucose and satiety rating effects.