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Updated: Jul 14, 2026

Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity
Published on: March 7, 2019
Factors predicting behavioral response to a physical activity intervention among adolescent females
Genevieve Fridlund Dunton1, Margaret Schneider, Dan M Cooper
1Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Alhambra, CA91803, USA. dunton@usc.edu
Objective:
To determine whether individual factors influenced rates of physical activity change in response to a school-based intervention.
Methods:
Sedentary adolescent females (N = 63) participated in a 9-month physical activity program. Weekly levels of leisure-time physical activity were reported using an interactive website.
Results:
Change in vigorous activity was more positive among participants who had higher fitness and lower friend support at baseline. Change in moderate activity was more positive among participants who had lower fitness and external barriers, and higher internal barriers at baseline.
Conclusions:
Adolescent females responded differentially to a physical activity intervention depending on individual characteristics.
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