Telephone versus print delivery of an individualized motivationally tailored physical activity intervention: Project STRIDE

Health Psychol. 2007 Jul;26(4):401-9. doi: 10.1037/0278-6133.26.4.401.


Objective: Given that only 25% of Americans meet physical activity recommendations, there is a need to develop and disseminate effective, evidence-based interventions to promote physical activity. The authors tested 2 delivery channels, telephone and print, to determine whether one was more effective in promoting physical activity.

Design: The authors randomly assigned 239 healthy, sedentary adults to (a) telephone-based individualized feedback, (b) print-based individualized feedback, or (c) contact control. Both intervention arms were guided by a motivationally tailored, theoretically driven computer expert system.

Main outcome measures: Physical activity as measured by the 7-day Physical Activity Recall interview.

Results: At 6 months, both telephone and print arms significantly increased in minutes of moderate intensity physical activity compared with control, with no differences between the intervention arms. At 12 months, print participants reported a significantly greater number of moderate intensity minutes than both telephone and control participants, who did not differ.

Conclusion: Results suggest that both telephone and print enhance the adoption of physical activity among sedentary adults; however, print interventions may be particularly effective in maintaining physical activity in the longer term.

Publication types

  • Randomized Controlled Trial
  • Research Support, N.I.H., Extramural

MeSH terms

  • Adult
  • Control Groups
  • Exercise
  • Health Behavior
  • Health Education
  • Health Promotion
  • Humans
  • Male
  • Motivation
  • Motor Activity
  • Physical Therapy Modalities
  • Telefacsimile
  • Telemedicine / methods*
  • Telephone