Tracking of physical activity during adolescence: the 1993 Pelotas Birth Cohort, Brazil
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.
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Faculdade de Saúde Pública da Universidade de São Paulo
2014
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oai:scielo:S0034-891020140006009252020-04-24Tracking of physical activity during adolescence: the 1993 Pelotas Birth Cohort, BrazilAzevedo,Mario RenatoMenezes,Ana MariaAssunção,Maria CecíliaGonçalves,HelenArumi,IgnasiHorta,Bernardo LessaHallal,Pedro Curi Adolescent Motor Activity Exercise Sedentary Lifestyle Cohort Studies 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.info:eu-repo/semantics/openAccessFaculdade de Saúde Pública da Universidade de São PauloRevista de Saúde Pública v.48 n.6 20142014-12-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-89102014000600925en10.1590/s0034-8910.2014048005313 |
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Azevedo,Mario Renato Menezes,Ana Maria Assunção,Maria Cecília Gonçalves,Helen Arumi,Ignasi Horta,Bernardo Lessa Hallal,Pedro Curi |
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Azevedo,Mario Renato Menezes,Ana Maria Assunção,Maria Cecília Gonçalves,Helen Arumi,Ignasi Horta,Bernardo Lessa Hallal,Pedro Curi Tracking of physical activity during adolescence: the 1993 Pelotas Birth Cohort, Brazil |
author_facet |
Azevedo,Mario Renato Menezes,Ana Maria Assunção,Maria Cecília Gonçalves,Helen Arumi,Ignasi Horta,Bernardo Lessa Hallal,Pedro Curi |
author_sort |
Azevedo,Mario Renato |
title |
Tracking of physical activity during adolescence: the 1993 Pelotas Birth Cohort, Brazil |
title_short |
Tracking of physical activity during adolescence: the 1993 Pelotas Birth Cohort, Brazil |
title_full |
Tracking of physical activity during adolescence: the 1993 Pelotas Birth Cohort, Brazil |
title_fullStr |
Tracking of physical activity during adolescence: the 1993 Pelotas Birth Cohort, Brazil |
title_full_unstemmed |
Tracking of physical activity during adolescence: the 1993 Pelotas Birth Cohort, Brazil |
title_sort |
tracking of physical activity during adolescence: the 1993 pelotas birth cohort, brazil |
description |
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. |
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Faculdade de Saúde Pública da Universidade de São Paulo |
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2014 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-89102014000600925 |
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