title: Application of the Theory of Planned Behaviour to weight control in an overweight cohort. Results from a pan-European dietary intervention trial (DiOGenes).
abstract: Using the Theory of Planned Behaviour (TPB), this study investigates weight control in overweight and obese participants (27 kg/m(2)≤BMI<45 kg/m(2)) taking part in a dietary intervention trial targeted at weight loss maintenance (n=932). Respondents completed TPB measures investigating "weight gain prevention" at three time points. Correlation and regression analyses were used to investigate the relationship between TPB variables and weight regain. The TPB explained up to 27% variance in expectation, 14% in intention and 20% in desire scores. No relationship was established between intention, expectation or desire and behaviour at Time 1 or Time 2. Perceived need and subjective norm were found to be significantly related to weight regain, however, the model explained a maximum of 11% of the variation in weight regain. Better understanding of overweight individuals' trajectories of weight control is needed to help inform studies investigating people's weight regain behaviours. Future research using the TPB model to explain weight control should consider the likely behaviours being sought by individuals.
authors.affiliation: Food, Consumer Behaviour and Health Research Centre, Department of Psychology, University of Surrey, Guildford, Surrey GU2 7XH, UK. aine.mcconnon@ucd.ie
authors.forename: Aine
authors.initials: A
authors.lastname: McConnon
authors.forename: Monique
authors.initials: M
authors.lastname: Raats
authors.forename: Arne
authors.initials: A
authors.lastname: Astrup
authors.forename: Magda
authors.initials: M
authors.lastname: Bajzová
authors.forename: Teodora
authors.initials: T
authors.lastname: Handjieva-Darlenska
authors.forename: Anna Karin
authors.initials: AK
authors.lastname: Lindroos
authors.forename: J Alfredo
authors.initials: JA
authors.lastname: Martinez
authors.forename: Thomas Meinert
authors.initials: TM
authors.lastname: Larson
authors.forename: Angeliki
authors.initials: A
authors.lastname: Papadaki
authors.forename: Andreas
authors.initials: A
authors.lastname: Pfeiffer
authors.forename: Marleen A
authors.initials: MA
authors.lastname: van Baak
authors.forename: Richard
authors.initials: R
authors.lastname: Shepherd
mesh_terms: D000328:Adult; D001835:Body Weight; D015331:Cohort Studies; D004032:Diet; D005247:Feeding Behavior / Q000523:psychology*; D005260:Female; D017408:Guidelines as Topic; D006801:Humans; D008297:Male; D008875:Middle Aged; D008962:Models, Theoretical; D009765:Obesity / Q000517:prevention & control*; D050177:Overweight / Q000517:prevention & control*; D011582:Psychological Theory; D011795:Surveys and Questionnaires; D044465:White People