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Journal Articles

  1. ET Warner, KY Wolin, DT Duncan, DP Heil, S Askew, GG Bennett, Differential accuracy of physical activity self-report by body mass index., American journal of health behavior, vol. 36 no. 2 (March, 2012), pp. 168-78, ISSN 1945-7359 [doi]
    (last updated on 2012/12/20)

    Abstract:
    OBJECTIVE: To examine whether agreement between self-reported and accelerometer-measured physical activity varies by BMI category in a low-income black sample. METHODS: Participants completed a questionnaire and wore an accelerometer for 4-6 days. Using one- and 10-minute bouts, accelerometers measured light, moderate, and vigorous physical activity time. RESULTS: Correlations varied by obesity (nonobese: one-minute r=0.41; 10-minute r=0.47; obese: one-minute r=0.21; 10-minute r=0 .14). Agreement was highest among nonobese persons (one-minute kappa = 0.48, 10-minute kappa = 0.023; obese: one-minute kappa = -0.024, 10- minute kappa = -0.020). CONCLUSIONS: We found compromised questionnaire performance among obese participants.

    Keywords:
    Actigraphy • Adult • Body Mass Index • Exercise* • Female • Humans • Male • Middle Aged • Obesity • Questionnaires • Reproducibility of Results • Self Report • United States • Young Adult • epidemiology • physiopathology • standards • standards*


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