Comparing different boosters of planning interventions on changes in fat consumption in overweight and obese individuals: A randomized controlled trial

Scholz, Urte; Ochsner, Sibylle; Luszczynska, Aleksandra (2013). Comparing different boosters of planning interventions on changes in fat consumption in overweight and obese individuals: A randomized controlled trial. International journal of psychology, 48(4), pp. 604-615. Psychology Press 10.1080/00207594.2012.661061

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Single planning interventions have been found to promote short-term dietary change. Repeated planning interventions may foster long-term effects on behavior change. It remains unknown whether there is a critical number of boosters to establish long-term maintenance of behavioral changes. This study aimed at investigating what social-cognitive variables mediate the effects of the interventions on dietary behavior change. Overall, 373 participants (n = 270 women, 72.4%; age M = 52.42, SD = 12.79) were randomly allocated to one of five groups: a control group, a single planning group, and three groups with 3, 6, or 9 weeks' repeated planning interventions. Follow-ups took place 4, 6, and 12 months after baseline. Change in fat consumption was not promoted by any of the interventions. In terms of social-cognitive variables, intentions, self-efficacy and coping planning displayed a time × group interaction, with the 9 weeks' planning group showing the most beneficial effects. Effect sizes, however, were very small. None of the tested planning interventions successfully promoted change in fat consumption across the 12 month period. This, however, could not be explained by problems with adherence to the intervention protocol. Potential explanations for this unexpected result are discussed.

Item Type:	Journal Article (Original Article)
Division/Institute:	07 Faculty of Human Sciences > Institute of Psychology > Personality Psychology, Differential Psychology and Diagnostics
UniBE Contributor:	Scholz, Urte
Subjects:	100 Philosophy > 150 Psychology
ISSN:	0020-7594
Publisher:	Psychology Press
Language:	English
Submitter:	Karin Dubler
Date Deposited:	13 May 2014 10:37
Last Modified:	05 Dec 2022 14:33
Publisher DOI:	10.1080/00207594.2012.661061
PubMed ID:	22519565
URI:	https://boris.unibe.ch/id/eprint/50070