Body size perception and weight control in youth: 9-year international trends from 24 countries

V. Quick, T. Nansel, D. Liu, L. Lipsky, P. Due, R. Iannotti

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    Abstrakt

    Objectives: To examine 9-year trends and relationships regarding misperceptions of body size and dieting for weight loss among adolescents from 24 countries, and explore the influence of country-level overweight prevalence. Methods: Sociodemographic characteristics, body size perception and dieting for weight loss were assessed in the Health Behaviour in School-aged Children survey conducted in 24 countries cross-sectionally at three time points (2001/2002, 2005/2006 and 2009/2010). Logistic regression models examined change over time in overestimation of body size in non-overweight adolescents, underestimation of body size in overweight adolescents, dieting for weight loss in non-overweight and overweight adolescents and relationships between body size perception and dieting. Analyses were stratified by weight status and sex. Covariates included country-level overweight prevalence, family affluence and country level of development. Body mass index was only included in models examining dieting for weight loss. Results: Country-level overweight prevalence increased over time (11.6-14.7%). Compared with Time 1, overweight adolescents had greater odds of body size underestimation at Time 3 (odds ratio (OR)=1.68 for girls; OR=1.10 for boys), whereas non-overweight adolescents had lower odds of body size overestimation at Time 3 (OR=0.87 for girls; OR=0.89 for boys). Controlling for country-level overweight prevalence attenuated these relationships. Compared with Time 1, overweight and non-overweight boys were 10% more likely to diet at Time 3, whereas overweight and non-overweight girls were 19% and 16%, respectively, less likely to diet at Time 3. Controlling for country-level overweight prevalence did not impact trends in dieting for weight loss. Additionally, the association of self-perceived overweight with increased odds of dieting diminished over time. Conclusions: Body size perceptions among adolescents may have changed over time concurrent with shifts in country-level body weight. However, controlling for country-level overweight prevalence did not impact trends in dieting for weight loss, suggesting a potentially stronger impact of social comparison on weight-related perceptions than on behavior.

    OriginalsprogEngelsk
    Artikelnummer811.5
    TidsskriftF A S E B Journal
    Vol/bind38
    Udgave nummer1
    Sider (fra-til)988-994
    ISSN0892-6638
    DOI
    StatusUdgivet - jul. 2014

    Bibliografisk note

    ISI Document Delivery No.: AX0MP Times Cited: 0 Cited Reference Count: 0 Quick, Virginia Nansel, Tonja Liu, Danping Lipsky, Leah Due, Pernille Iannotti, Ronald Experimental Biology Meeting APR 26-30, 2014 San Diego, CA Cenveo, LI COR, Wiley, Mead Johnson Pediat Nutr Inst, IPRECIO, F1000 Res, Amer Assoc Anatomists, Amer Physiol Soc, Amer Soc Biochem & Mol Biol, Amer Soc Investigat Pathol, Amer Soc Nutr, Amer Soc Pharmacol & Expt Therapeut 0 FEDERATION AMER SOC EXP BIOL BETHESDA FASEB J S

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