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ARS Home » Northeast Area » Boston, Massachusetts » Jean Mayer Human Nutrition Research Center On Aging » Research » Publications at this Location » Publication #183476


item Hajduk, Cheryl
item Das, Sai Krupa
item Saltzman, Edward
item Bales, Connie
item Mccrory, Megan
item Kim, Judy
item Golden, Julie
item Pittas, Anastassios
item Roberts, Susan

Submitted to: Obesity Research
Publication Type: Abstract Only
Publication Acceptance Date: 5/25/2005
Publication Date: 10/1/2005
Citation: Hajduk, C.L., Das, S., Saltzman, E., Bales, C.W., Mccrory, M., Kim, J., Golden, J., Pittas, A.G., Roberts, S.B. 2005. Effect of fiber on BMI, weight loss and satisfaction with food consumed during caloric restriction. Obesity Research. 13(Suppl):A141.

Interpretive Summary:

Technical Abstract: The effects of recommending a dietary fiber supplement on BMI, weight loss and satisfaction with amount of food during 48 wks of caloric restriction (CR) were studied in healthy overweight men and women (n=34, 26F/8M, Means+/-SD: 35+/-6y; BMI 27.6+/-1.4kg/m2) from a larger CR trial. After a 6-wk, weight-stable baseline (BL), subjects were randomized to either a low or high glycemic load diet (LG or HG) at 70% of ad lib intake, with food provided for 24 wks and self-selected for 24 wks. After 5 wks of CR, subjects were further randomized to receive either a 20g/d fiber supplement (+F) or no supplement (-F) for 6 wks. Outcome variables, measured during BL, the 6-wk fiber randomization (FR), and wks 12 and 24 of the self-selected phase (SS), were reported energy and fiber intakes, BMI, weight, hunger and satisfaction with amount of food measured by a 100mm scale. BL fiber intake was lower than DRI goals of 14g/1000kcals and did not differ between +F and -F (8.6+/-2.1, 8.0+/-1.7g/1000kcals). During FR, fiber intake in +F was 8.7g/1000kcals higher than -F (p<0.0001). Fiber intake went up significantly compared to BL in both +F and -F (14.2+/-0.9, 22.9+/-1.7g/1000kcals, p<0.0001) and during SS (15.1+/-2.8, 17.4+/-4.6g/1000kcals, p<0.0001) and was >/= DRIs throughout CR. During FR there were no significant differences in change in weight loss, hunger, or satisfaction with amount of food when comparing +F and -F in HG, LG or combined groups. However, at BL and SS, there was a significant positive relationship between fiber (g/day) and satisfaction with amount of food (r=0.44, p=0.02; r=0.49, p=0.05) and at SS, a significant negative association between fiber (g/d) and BMI (r=-0.33, p=0.04). While no statistically significant effect of added fiber above DRIs on short-term satisfaction with food intake or weight loss was found during the 6-wk FR, the long-term association of higher fiber with lower BMI and higher satisfaction with food intake indicates that current DRIs may facilitate maintenance of long-term CR.