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Related Experiment Videos

Using hand-held computer technologies to improve dietary intake.

Audie A Atienza1, Abby C King, Brian M Oliveira

  • 1National Cancer Institute, Division of Cancer Control and Population Sciences, Behavioral Research Program, Health Promotion Research Branch, Bethesda, Maryland, USA. AtienzaA@mail.nih.gov

American Journal of Preventive Medicine
|May 13, 2008
PubMed
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Portable hand-held technology effectively increased vegetable intake in adults over 50. This pilot study shows promising results for using personal digital assistants (PDAs) to improve healthy eating habits.

Area of Science:

  • Gerontology
  • Nutritional Science
  • Health Informatics

Background:

  • Portable technology shows potential for real-world dietary assessment and feedback.
  • Research on the efficacy of such technology in modifying dietary behaviors is limited.
  • This pilot study addresses the need for rigorous designs to evaluate technology-based interventions.

Purpose of the Study:

  • To evaluate the efficacy of a personal digital assistant (PDA) in increasing vegetable and whole-grain intake.
  • To assess the impact of a PDA-based intervention over an 8-week period.
  • To examine the effectiveness of portable technology in modifying dietary behaviors in mid-life and older adults.

Main Methods:

  • A randomized study design was employed with 27 healthy adults aged 50 and older.

Related Experiment Videos

  • The intervention group received a PDA for monitoring intake and providing daily feedback, goal-setting, and support.
  • The control group received standard written nutritional education materials.

    • Main Results:

    • Intervention participants showed significantly greater increases in vegetable servings compared to controls (1.5-2.5 servings/day; p=0.02).
    • A trend towards greater intake of dietary fiber from grains was observed in the intervention group (3.7-4.5 servings/day; p=0.10).
    • Dietary intake was assessed using the Block Food Frequency Questionnaire at baseline and 8 weeks.

    Conclusions:

    • Portable hand-held technology can effectively increase the intake of healthy food groups.
    • Daily individualized feedback delivered via technology shows promise for real-world dietary behavior modification.
    • This study provides preliminary evidence for the utility of PDAs in promoting healthier eating habits in older adults.