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Secular trends in weight status and weight-related attitudes and behaviors in adolescents from 1999 to 2010
Authors:Neumark-Sztainer Dianne  Wall Melanie M  Larson Nicole  Story Mary  Fulkerson Jayne A  Eisenberg Marla E  Hannan Peter J
Affiliation:
  • a Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, 1300 South Second Street, Suite 300, Minneapolis, MN 55454, USA
  • b Departments of Biostatistics and Psychiatry, Columbia University, 1051 Riverside Drive, Unit 48, New York, NY 10032, USA
  • c School of Nursing, University of Minnesota, 6-107 Weaver Densford Hall, 308 Harvard Street SE, Minneapolis, MN 55455, USA
  • d Division of Adolescent Health and Medicine, Department of Pediatrics, University of Minnesota, 717 Delaware Street SE, 3rd Floor, Minneapolis, MN 55414, USA
    		•
    Abstract:

    Objective

    To examine secular trends from 1999 to 2010 in weight status and weight-related attitudes and behaviors among adolescents.

    Methods

    A repeated cross-sectional design was used. Participants were from Minneapolis/St. Paul middle schools and high schools and included 3072 adolescents in 1999 (mean age14.6 ± 1.8) and 2793 adolescents in 2010 (mean age14.4 ± 2.0). Trends in weight-related variables were examined using inverse probability weighting to control for changes in socio-demographics over time.

    Results

    The prevalence of obesity among boys increased by 7.8% from 1999 to 2010, with large ethnic/racial disparities. In black boys the prevalence of obesity increased from 14.4% to 21.5% and among Hispanic boys, obesity prevalence increased from 19.7% to 33.6%. Trends were more positive among girls: weight status did not significantly increase, perceptions of overweight status were more accurate, the use of healthy weight control behaviors remained high, dieting decreased by 6.7%, unhealthy weight control behaviors decreased by 8.2% and extreme weight control behaviors decreased by 4.5%.

    Conclusions

    Trends indicate a need to intensify efforts to prevent obesity and other weight-related problems, particularly for boys from ethnic/racial minorities. The decreases in unhealthy weight control behaviors among girls are encouraging.
    Keywords:Obesity   Adolescents   Dieting   Weight control   Secular trends   Racial disparities
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