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Accelerometer-Measured Physical Activity and Sedentary Behavior Patterns in Taiwanese Adolescents
Wen-Yi Wang1, Yu-Ling Hsieh1, Ming-Chun Hsueh1
1Graduate Institute of Sports Pedagogy, University of Taipei, Taipei 11153, Taiwan.
International Journal of Environmental Research and Public Health
|November 14, 2019
Summary
Taiwanese adolescents have low physical activity levels, with girls being less active and more sedentary than boys. Interventions are needed to boost activity and reduce sedentary time, particularly for girls.
Area of Science:
- Public Health
- Adolescent Health
- Exercise Science
Background:
- Adolescent physical activity and sedentary behavior vary across settings.
- Few Asian studies objectively measure these patterns across weekdays/weekends and school/after-school times.
Purpose of the Study:
- To objectively measure physical activity and sedentary behavior in Taiwanese adolescents.
- To compare these patterns by gender, weekdays/weekends, and during/after school time.
Main Methods:
- 470 Taiwanese students (12-15 years) wore accelerometers for 7 days.
- Measured intensity-specific physical activity, total sedentary time, and sedentary bouts (≥30 min).
- Analyzed data using Mann-Whitney U test for gender and time differences.
Main Results:
- Adolescents' overall activity levels were below recommended thresholds.
- Girls exhibited significantly less moderate-to-vigorous physical activity than boys.
- Girls had longer sedentary time, longer sedentary bouts, and more frequent sedentary bouts than boys.
Conclusions:
- Physical activity levels are insufficient in Taiwanese adolescents, with notable gender disparities.
- Targeted interventions are crucial to increase physical activity and decrease sedentary behavior, especially for girls.
- Findings highlight the need to address prolonged sedentary time and long sedentary bouts in this population.

