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Updated: Aug 6, 2026
05:59
Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity
Published on: March 7, 2019
Factors affecting the intention to perform physical activity: A theory-based research
Samira Sadeghi1, Ali Ramezankhani1, Mohtasham Ghaffari1
1Department of Public Health, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Journal of Education and Health Promotion
|July 23, 2026
Summary
Adolescent girls
Area of Science:
- Behavioral Science
- Public Health
- Adolescent Health
Background:
- Physical activity (PA) levels in adolescent girls are below recommended standards.
- Theories and models are effective in understanding PA behavior determinants.
- The Theory of Planned Behavior (TPB) is a key framework for studying intention.
Purpose of the Study:
- To identify factors influencing high-school girls' intentions to engage in physical activity.
- To apply the Theory of Planned Behavior (TPB) framework.
- To understand the role of attitude, subjective norms, and perceived behavioral control.
Main Methods:
- A cross-sectional study was conducted with 220 female high-school students.
- Data were collected using questionnaires on TPB constructs and demographics.
- Statistical analyses included ANOVA, t-tests, correlation, and regression.
Main Results:
- Attitude (β = 0.401) and subjective norms (β = 0.170) significantly predicted physical activity intention.
- These factors explained 25.9% of the variance in intention.
- Perceived behavioral control did not significantly predict intention (β = 0.077).
Conclusions:
- The Theory of Planned Behavior (TPB) is relevant for promoting physical activity in adolescent girls.
- Attitude and subjective norms are significant predictors of physical activity intention.
- Attitude emerged as the strongest predictor, highlighting its importance in interventions.
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