(01-05-12) Long-term consumption of high energy-dense snack foods on sensory-specific satiety and intake1,2,3

1. Siew Ling Tey,
2. Rachel C Brown,
3. Andrew R Gray,
4. Alexandra W Chisholm, and
5. Conor M Delahunty
+ Author Affiliations
1. 1From the Departments of Human Nutrition (SLT, RCB, and AWC) and Preventive and Social Medicine (ARG), University of Otago, Dunedin, New Zealand, and CSIRO Division of Food and Nutritional Sciences, North Ryde, Australia (CMD).
+ Author Notes
↵2 Supported by a University of Otago research grant.
↵3 Address correspondence to RC Brown, Department of Human Nutrition, University of Otago, PO Box 56, Dunedin 9054, New Zealand. E-mail: [email protected].
Abstract
Background: The sensory attributes of foods may have an important influence on intake because of sensory-specific satiety (SSS). Foods with high SSS may aid in body weight maintenance as a result of termination of consumption before metabolic satiety. No studies have investigated whether long-term exposure to a food might change SSS or how this affects food intake.
Objective: The objective was to compare the effects of daily consumption of 3 energy-dense snack foods (hazelnuts, chocolate, and potato chips) for 12 wk on SSS and ad libitum intake during a tasting session.
Design: One hundred eighteen participants took part in this randomized, controlled, parallel study with 4 arms: control group (no additional food) or ??1100 kJ/d for each snack. SSS, food intake, and body composition were measured at baseline and at week 12.
Results: Daily consumption of snacks for 12 wk resulted in a statistically significant reduction in SSS in all 3 snack groups (P = 0.015). However, no such changes were seen in the control group (P = 0.608). Ad libitum energy intake increased over the study during the tasting sessions for the snack food across all groups, including the control group (P = 0.039). Inverse associations were found between baseline SSS and BMI (P = 0.039), percentage body fat (P = 0.013), and fat mass (P = 0.004).
Conclusion: Habitual consumption of a high energy-dense snack food results in a decrease in SSS, which could lead to a higher energy intake of the snack. This trial was registered at www.anzctr.org.au as ACTRN

Source: Am J Clin Nutr May 2012 vol. 95 no. 5 1038-1047

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