Tracking of physical activity during adolescence: the 1993 Pelotas Birth Cohort, Brazil

Revista de Saúde Pública

Mario Renato Azevedo¹  Ana Maria Menezes¹  Maria Cecília Assunção¹  Helen Gonçalves¹  Ignasi Arumi¹  Bernardo Lessa Horta¹  Pedro Curi Hallal¹ 

关键词: Adolescent;    Motor Activity;    Exercise;    Sedentary Lifestyle;    Cohort Studies;    Adolescente;    Atividade Motora;    Exercício;    Estilo de Vida Sedentário;    Estudos de Coortes;   

DOI  :  10.1590/S0034-8910.2014048005313

来源: SciELO

【 摘 要 】

OBJECTIVE To analyze physical activity during adolescence in participants of the 1993 Pelotas Birth Cohort Study, Brazil. METHODS Data on leisure time physical activity at 11, 15, and 18 years of age were analyzed. At each visit, a cut-off point of 300 min/week was used to classify adolescents as active or inactive. A total of 3,736 participants provided data on physical activity at each of the three age points. RESULTS A significant decline in the proportion of active adolescents was observed from 11 to 18 years of age, particularly among girls (from 32.9% to 21.7%). The proportions of girls and boys who were active at all three age points were 28.0% and 55.1%, respectively. After adjustment for sex, economic status, and skin color, participants who were active at 11 and 15 years of age were 58.0% more likely to be active at 18 years of age compared with those who were inactive at 11 and 15 years of age. CONCLUSIONS Physical activity declined during adolescence and inactivity tended to track over time. Our findings reinforce the need to promote physical activity at early stages of life, because active behavior established early tends to be maintained over time.

【 授权许可】

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