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Development and preliminary evaluation of an internet-based healthy eating program: randomized controlled trial.

Katy Tapper1, Gabriela Jiga-Boy, Gregory R Maio

  • 1Department of Psychology, City University London, London, United Kingdom. katy.tapper.1@city.ac.uk.

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|October 12, 2014
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Summary

The HealthValues Healthy Eating Programme increased fruit and vegetable intake over six months. This internet-based intervention also led to overall reductions in saturated fat and added sugar consumption.

Keywords:
Internetadded sugardietfruithealth promotionmotivationpsychologysaturated fatsocial valuesvegetables

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Area of Science:

  • Behavioral Science
  • Nutritional Science
  • Digital Health Interventions

Background:

  • The HealthValues Healthy Eating Programme is an internet-based intervention designed to promote behavior change.
  • It integrates novel strategies like analyzing health values with established psychological principles.
  • The program includes phases for motivation, volition, and maintenance of healthy eating habits.

Purpose of the Study:

  • To evaluate the impact of the HealthValues program on dietary intake.
  • Specifically, to assess changes in fruit and vegetable consumption, saturated fat, and added sugar over six months.

Main Methods:

  • A randomized controlled trial involving 100 participants (82 females, 18 males).
  • Participants engaged in a 24-week online program with weekly health measures.
  • Objective measures including Body Mass Index (BMI), waist-to-hip ratio (WHR), and food frequency questionnaires (FFQ) were collected at baseline, 3, and 6 months.

Main Results:

  • A significant increase in fruit and vegetable consumption was observed in the intervention group compared to the control group (P=.048).
  • Overall reductions in saturated fat (P<.001) and added sugar intake (P<.001) were noted across all participants.
  • Reductions in BMI (P=.001) and WHR (P=.009) were also observed, independent of group allocation.

Conclusions:

  • The HealthValues program effectively increased and sustained fruit and vegetable intake over six months.
  • Monitoring dietary behaviors appears effective for reducing fat and sugar consumption.
  • The web-based format suggests potential for cost-effective public health promotion of healthy eating.