PortionControl@HOME: Results of a Randomized Controlled Trial Evaluating the Effect of a Multi-Component Portion Size Intervention on Portion Control Behavior and Body Mass Index. Issue 1 (21st August 2014)

• Record Type: Journal Article
• Authors: Poelman, Maartje P.; de Vet, Emely; Velema, Elizabeth; de Boer, Michiel R.; Seidell, Jacob C.; Steenhuis, Ingrid H. M.
• Is Part Of: Annals of behavioral medicine. Volume 49:Issue 1(2015)
• Page Start: 18
• Page End: 28
• Publication Date: 2014-08-21
• Subjects: Portion size -- Intervention -- Obesity -- Weight loss -- Portion control -- Self-regulation; Medicine and psychology -- Periodicals; Sick -- Psychology -- Periodicals; Behavioral Medicine; 616.0019
• DOI: 10.1007/s12160-014-9637-4
• Languages: English
• ISSNs: 0883-6612

Abstract

Abstract: Background: Food portion sizes influence energy intake. Purpose: The purpose of this paper is to determine effectiveness of the "PortionControl@HOME" intervention on body mass index and portion control behavior. Methods: A randomized controlled trial among 278 overweight and obese participants was conducted. PortionControl@HOME aimed to increase: portion size awareness, portion control behavior, portion control cooking skills, and to create a home environment favoring portion control. Results: Intention-to-treat multi-level regression analysis indicated statistically significant effects of the intervention on portion control behavior at 3, 6, and 12 months follow-up. The effect on body mass index was significant only at 3 months follow-up and when outliers ( n = 3) were excluded ( B = −0.45; 95 %CI = −0.88 to −0.04). The intervention effect on body mass index was mediated by portion control behavior. Conclusions: The intervention improves portion control behavior, which in turn influence body mass index. Once the intervention ceased, sustained effects on body mass index were no longer evident. (Current-Controlled-Trials ISRCTN12363482).