Lewis, HB, Ahern, AL, Solis-Trapala, I, Walker, CG, Reimann, F, Gribble, FM and Jebb, SA (2015) Effect of reducing portion size at a compulsory meal on later energy intake, gut hormones, and appetite in overweight adults. Obesity (Silver Spring), 23 (7). 1362 - 1370.

I Solis-Trapla - The effect of covertly reducing food portion size at a single meal on daily energy intake and appetite control in overweight and obese adults.pdf - Accepted Version
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OBJECTIVE: Larger portion sizes (PS) are associated with greater energy intake (EI), but little evidence exists on the appetitive effects of PS reduction. This study investigated the impact of reducing breakfast PS on subsequent EI, postprandial gastrointestinal hormone responses, and appetite ratings. METHODS: In a randomized crossover design (n = 33 adults; mean BMI 29 kg/m(2) ), a compulsory breakfast was based on 25% of gender-specific estimated daily energy requirements; PS was reduced by 20% and 40%. EI was measured at an ad libitum lunch (240 min) and snack (360 min) and by weighed diet diaries until bed. Blood was sampled until lunch in 20 participants. Appetite ratings were measured using visual analogue scales. RESULTS: EI at lunch (control: 2,930 ± 203; 20% reduction: 2,853 ± 198; 40% reduction: 2,911 ± 179 kJ) and over the whole day except breakfast (control: 7,374 ± 361; 20% reduction: 7,566 ± 468; 40% reduction: 7,413 ± 417 kJ) did not differ. Postprandial PYY, GLP-1, GIP, insulin, and fullness profiles were lower and hunger, desire to eat, and prospective consumption higher following 40% reduction compared to control. Appetite ratings profiles, but not hormone concentrations, were associated with subsequent EI. CONCLUSIONS: Smaller portions at breakfast led to reductions in gastrointestinal hormone secretion but did not affect subsequent energy intake, suggesting small reductions in portion size may be a useful strategy to constrain EI.

Item Type: Article
Additional Information: This work is made available online in accordance with the publishers policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version.
Uncontrolled Keywords: portion size; appetite; gastrointestinal hormones; energy intake
Subjects: R Medicine > RA Public aspects of medicine
Divisions: Faculty of Medicine and Health Sciences > Primary Care Health Sciences
Related URLs:
Depositing User: Symplectic
Date Deposited: 20 Oct 2016 08:13
Last Modified: 26 Jul 2017 09:36
URI: https://eprints.keele.ac.uk/id/eprint/2025

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