Related Experiment Video
Updated: May 23, 2026

Physical Activity Measurement in Children Accepting Table Tennis Training
Published on: July 27, 2022
A longitudinal evaluation of physical activity in Brazilian adolescents: tracking, change and predictors
Samuel C Dumith1, Denise P Gigante, Marlos R Domingues
1Post-Graduate Program in Epidemiology, Federal University of Pelotas, Pelotas, Brazil.
Abstract:
This study aimed to: 1) describe the change in leisure-time physical activity (LTPA) during early-to-mid adolescence; 2) analyze the tracking of LTPA; 3) identify the predictors of LTPA change. 4,120 adolescents were from 11 to 15 years old. Outcome was self-reported LTPA (min/wk). Boys increased their LTPA level over the four years (mean: 75 min/wk; 95%CI: 49,100), whereas a decrease was observed among girls (mean: -42 min/wk; 95%CI: -57,-28). Likelihood to be active at 15 years of age was 50% higher (95%CI: 39-62) among those who were active at 11 years. The main predictor of LTPA change was the number of physical activities performed at baseline. Regular physical activity early in life can predict this behavior afterward.
Related Concept Videos
Longitudinal Research
Longitudinal Studies
Lifestyle Factors and Health
Benefits of Physical Activity
Physical activity, whether through structured exercise or casual activities like walking, biking, or dancing, is a cornerstone of a...
Cross-Sectional Research
Cognitive Development During Adolescence

