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• W1999395412 abstract "Analisar a concordância entre dois pontos de corte para atividade física (300 e 420 minutos/semana) e os fatores associados em jovens. Participaram do estudo 738 adolescentes da cidade de Londrina-PR, Brasil. A prática de atividade física em intensidade moderada a vigorosa e as variáveis sexo, idade, escolaridade paterna e materna, com quem mora, número de irmãos, percepção de atividade física, participação nas aulas de educação física, local para prática de atividade física e comportamento sedentário foram coletadas por meio de um questionário. A prevalência de atividade física entre os critérios foi comparada por meio do teste de McNemar, a concordância avaliada, por meio do índice Kappa, e a análise multivariada, por meio da regressão de Poisson com ajuste robusto da variância. A prevalência de atividade física foi significativamente diferente: 22,3% para 300 minutos/semana e 12,8% para 420 minutos/semana (p<0,05), e a concordância foi forte (k=0,82, p<0,001). As variáveis sexo, escolaridade paterna, percepção de atividade física e comportamento sedentário se associaram com a atividade física em ambos os critérios analisados. A participação nas aulas de educação física e a disponibilidade de locais para prática se associaram apenas com o ponto de corte 300 minutos/semana. Sugere-se cautela ao utilizar pontos de corte para atividade física em estudos epidemiológicos, considerando que pode resultar em diferença na prevalência de atividade física e dos fatores a ela associados. To analyze the agreement between two cutoff points for physical activity (300 and 420 minutes/week) and associated factors in youth. The study enrolled 738 adolescents of Londrina city, Paraná, Southern Brazil. The following variables were collected by a self report questionnaire: presence of moderate to vigorous physical activity, gender, age, father and mother education level, with whom the adolescent lives, number of siblings, physical activity perception, participation in Physical Education classes, facilities available to physical activity practice and sedentary behavior. Prevalence of physical activity between criterions were compared using McNemar test and the agreement was analysed by Kappa index. Multivariate analysis was performed using Poisson regression with robust variance adjustment was applied. The prevalence for physical activity was significantly different: 22,3% for 300 minutes/week and 12,8% for 420 minutes/week (p<0,05), but the agreement was strong (k=0,82, p<0,001). The variables gender, father education, physical activity perception and sedentary behavior were associated to physical activity in both analyzed criteria. Participation in Physical Education class and facilities available to physical activity practice were associated to physical activity only with 300 minutes/week cutoff point. Caution is suggested regarding cutoffs use for physical activity in epidemiological studies, considering they can result in differences in prevalence of physical activity and its associated factors." @default.
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• W1999395412 date "2014-09-01" @default.
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• W1999395412 title "Concordância entre dois pontos de corte para atividade física e fatores associados em jovens" @default.
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• W1999395412 doi "https://doi.org/10.1590/0103-0582201432311" @default.
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