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Mobile Technology for Vegetable Consumption: A Randomized Controlled Pilot Study in Overweight Adults.

Sarah Ann Mummah1, Maya Mathur, Abby C King

  • 1Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, CA, United States. sm885@cam.ac.uk.

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|May 20, 2016
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Summary

A mobile app intervention called Vegethon significantly increased vegetable consumption in overweight adults over 12 weeks. This pilot study shows promising results for using technology to improve dietary habits and health outcomes.

Keywords:
cell phonesdieteatinghealth behaviorpilot projectsrandomized controlled trialtelemedicinevegetables

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Area of Science:

  • Behavioral Science
  • Nutritional Science
  • Digital Health

Background:

  • Mobile apps offer scalable behavior change interventions.
  • No prior studies assessed app efficacy for increasing vegetable intake in overweight adults.

Purpose of the Study:

  • Assess the initial efficacy and user acceptability of the theory-driven mobile app, Vegethon.
  • Investigate Vegethon's potential to increase vegetable consumption in overweight adults.

Main Methods:

  • 17 overweight adults were randomized to Vegethon or a control group.
  • Vegetable consumption was measured using the Harvard Food Frequency Questionnaire at baseline and 12 weeks.
  • App usability and satisfaction were assessed via a post-intervention questionnaire.

Main Results:

  • The Vegethon group showed significantly greater vegetable consumption (7.4 servings) compared to the control group (P=.02).
  • Significant increases were observed in consumption of green leafy, cruciferous, and dark yellow vegetables.
  • Participants reported positive experiences, finding the app easy to use and recommending it.

Conclusions:

  • Vegethon demonstrated initial efficacy and user acceptability for increasing vegetable intake in overweight adults.
  • Mobile app interventions show potential for improving dietary habits in this population.
  • Larger, longer-term studies are needed to confirm these findings and explore broader applications.