A longitudinal evaluation of physical activity in Brazilian adolescents: tracking, change and predictors

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 th...

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Bibliographic Details
Published in:Pediatric exercise science 2012-02, Vol.24 (1), p.58-71
Main Authors: Dumith, Samuel C, Gigante, Denise P, Domingues, Marlos R, Hallal, Pedro C, Menezes, Ana M B, Kohl, 3rd, Harold W
Format: Article
Language:English
Subjects:
Adolescent
Adolescent Behavior - psychology
Brazil
Child
Child, Preschool
Confidence Intervals
Exercise
Female
Humans
Infant
Infant, Newborn
Leisure Activities
Linear Models
Longitudinal Studies
Male
Motor Activity - physiology
Self Report
Sex Factors
Sports - physiology
Statistics as Topic
Teenagers
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Summary: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.
ISSN:0899-8493
1543-2920
DOI:10.1123/pes.24.1.58