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Updated: Apr 18, 2026

Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity
Published on: March 7, 2019
Social support for physical activity-role of Facebook with and without structured intervention
David N Cavallo1, Deborah F Tate2, Dianne S Ward3
1Department of Nutrition, University of North Carolina, Gillings School of Global Public Health, Chapel Hill, NC USA ; Center for Cancer Prevention and Control Research, University of California Los Angeles, 650 Charles Young Drive South, Room A2-125, CHS Box 956900, Los Angeles, CA 90095-6900 USA.
Abstract:
Despite their widespread use and extensive technical features, little is known about how to use online social networking sites to increase physical activity. This study aims to examine Facebook engagement among participants in the online social networking arm of a randomized controlled physical activity promotion trial (n = 67). Facebook communications were double coded and analyzed using ATLAS.ti. Regression procedures were used to determine predictors of Facebook use and associations between types of use and changes in perceived social support and physical activity. Changes in perceived social support and physical activity were more strongly associated with participants' individual Facebook use than use of the Facebook intervention group. The way social media sites are used in intervention design could have an impact on their effects. Including existing friends in interventions and using applications that incorporate intervention activities into a more naturalistic use of Facebook may improve the efficacy of future interventions.
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