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Related Experiment Video

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Evaluation of a Smartphone-based Human Activity Recognition System in a Daily Living Environment
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Physical Activity Promotion in Schools Using Theoretically Designed Mobile Phone Application.

Ali Ramezankhani1, Samira Sadeghi1, Mohtasham Ghaffari1

  • 1Department of Public Health, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

International Journal of Preventive Medicine
|May 8, 2024
PubMed
Summary

Mobile apps effectively increased physical activity in adolescent girls using the theory of planned behavior. This intervention improved attitudes, control, and intentions, promoting healthier habits for lifelong benefits.

Keywords:
Exercisemobile applicationstudentstheory of planned behavior

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Area of Science:

  • Adolescent Health
  • Behavioral Science
  • Digital Health Interventions

Background:

  • Regular physical activity in adolescents offers lifelong health benefits.
  • Mobile applications are recognized as effective tools for promoting physical activity.
  • Behavioral theories provide frameworks for designing effective health interventions.

Purpose of the Study:

  • To increase physical activity in female high school students.
  • To utilize mobile phone applications as the delivery method for an educational intervention.
  • To base the intervention on the constructs of the Theory of Planned Behavior.

Main Methods:

  • A quasi-experimental study involving 220 high school students (110 per group).
  • Multi-stage cluster sampling with validated International Physical Activity Questionnaire and Theory of Planned Behavior questionnaires.
  • An 8-session educational intervention delivered via a mobile app, with pre-test, post-test, and 2-month follow-up assessments.

Main Results:

  • Significant improvements were observed in attitude, perceived behavioral control, intention, and physical activity levels in the intervention group compared to the control group.
  • Subjective norms showed a significant difference at post-test but not at the 2-month follow-up.
  • The mobile app intervention positively impacted key determinants of physical activity.

Conclusions:

  • An educational intervention grounded in the Theory of Planned Behavior and delivered via mobile applications successfully enhanced physical activity among adolescent girls.
  • The findings support the use of technology-based behavioral interventions for promoting adolescent physical activity.
  • Wider implementation across all schools is recommended to assess broader effectiveness.