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Texting to Increase Adolescent Physical Activity: Feasibility Assessment.

Debbe Thompson1, Dora Cantu2, Betsy Ramirez2

  • 1USDA/ARS Children's Nutrition Research Center, Baylor College of Medicine, Houston, TX, USA. dit@bcm.edu.

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Summary

This study found that a program combining pedometers, theory-informed text messages, and goal prompts is a feasible way to increase adolescent physical activity. The intervention was well-received and showed modest improvements in activity levels.

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Area of Science:

  • Behavioral Science
  • Public Health
  • Adolescent Health

Background:

  • Feasibility trials are crucial for evaluating behavior change programs before large-scale implementation.
  • Adolescent physical activity is a significant public health concern, necessitating effective interventions.
  • Self-Determination Theory provides a framework for understanding motivation in behavior change.

Purpose of the Study:

  • To assess the feasibility and acceptability of a multi-component intervention to increase physical activity in adolescents.
  • To evaluate the additive effects of Self Determination Theory-informed text messages, pedometers, and goal prompts.
  • To examine changes in objectively measured physical activity and participant reactions.

Main Methods:

  • A 4-group randomized controlled trial with 160 adolescents (aged 14-15 years).
  • Intervention components included pedometers, goal prompts, and theory-informed text messages, with a no-treatment control group.
  • Primary outcome was feasibility; secondary outcomes included changes in step counts and moderate-to-vigorous physical activity (MVPA) measured by ActiGraph.

Main Results:

  • Feasibility criteria were met, with a low attrition rate (<2%).
  • Modest increases in daily step counts and MVPA were observed across intervention groups compared to the control.
  • Participants reported positive reactions to the intervention components.

Conclusions:

  • A combined intervention of pedometers, theory-informed texts, and goal prompts is feasible and acceptable for promoting adolescent physical activity.
  • The findings support the potential of this intervention for future efficacy trials.
  • This approach offers a promising strategy for public health initiatives targeting youth physical activity.