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    How willing are adolescents to record their dietary intake? The mobile food record

    246430_246430.pdf (4.549Mb)
    Access Status
    Open access
    Authors
    Kerr, Deborah
    Boushey, C.
    Harray, A.
    Schap, T.
    Paterson, S.
    Aflague, T.
    Bosch Ruiz, M.
    Ahmad, Z.
    Delp, E.
    Date
    2015
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Kerr, D. and Boushey, C. and Harray, A. and Schap, T. and Paterson, S. and Aflague, T. and Bosch Ruiz, M. et al. 2015. How willing are adolescents to record their dietary intake? The mobile food record. JMIR Mhealth Uhealth. 3 (2): pp. e47-e47.
    Source Title
    JMIR Mhealth Uhealth
    DOI
    10.2196/mhealth.4087
    ISSN
    2291-5222
    School
    School of Public Health
    Remarks

    This open access article is distributed under the Creative Commons license https://creativecommons.org/licenses/by/2.0/

    URI
    http://hdl.handle.net/20.500.11937/22696
    Collection
    • Curtin Research Publications
    Abstract

    Background: Accurately assessing the diets of children and adolescents can be problematic. Use of technologies, such as mobile apps designed to capture food and beverages consumed at eating occasions with images taken using device-embedded cameras, may address many of the barriers to gathering accurate dietary intake data from adolescents. Objective: The objectives of this study were to assess the willingness of adolescents to take images of food and beverages at their eating occasions using a novel mobile food record (mFR) and to evaluate the usability of the user confirmation component of the mFR app, referred to as the “review process.” Methods: Mixed methods combining quantitative and qualitative protocols were used in this study. Adolescents (11-15-year olds) attending a summer camp were recruited to participate in the study. First, the participants were asked to take images of foods and beverages consumed as meals and snacks for 2 consecutive days using the mFR app running on an iPhone and the number of images taken was noted. This was followed by focus group sessions to evaluate usability, which was analyzed by content and themes. After using the mFR, a think-aloud method was used to evaluate the usability of the mFR method for reviewing system-identified foods (ie, the review process). A usability questionnaire was administered at the end of all activities.Results: The mFR was accepted by the majority of the 24 boys and 17 girls (n=41) but varied according to gender and eating occasion. Girls were significantly more likely than boys to capture images of their eating occasions (Fisher exact test, P=.03). Participants were more likely to take images of their breakfasts (90%, 36/40) and lunches (90%, 72/80) and least likely to capture afternoon and evening snacks, 54% (43/80) and 40% (32/80), respectively. The major themes from the focus groups with regard to using the mFR were games, rewards, and the need to know more about why they were using the app. Results of the usability questionnaire indicated that including a game component would be important to increase willingness to use the mFR, and a high majority of the participants indicated a willingness to use the mFR for 7 days or more. The image review process was found to be easy to use except for some confusion with overlapping markers on the screen. Conclusions: The adolescents’ experiences with and feedback about the mFR highlighted the importance of increased training, reminders, entertainment (eg, games), and training with practice in using the device to capture complete dietary intake as part of their active lifestyles.

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