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      Validade de indicadores de atividade física e comportamento sedentário da Pesquisa Nacional de Saúde do Escolar entre adolescentes do Rio de Janeiro, Brasil Translated title: Validity of indicators on physical activity and sedentary behavior from the Brazilian National School-Based Health Survey among adolescents in Rio de Janeiro, Brazil Translated title: Validez de indicadores de actividad física y conducta sedentaria de la Encuesta Nacional de Salud Escolar entre adolescentes en Río de Janeiro, Brasil

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          Abstract

          Analisou-se a validade relativa dos indicadores de atividade física do questionário utilizado na Pesquisa Nacional de Saúde do Escolar (PeNSE) entre adolescentes da cidade do Rio de Janeiro, Brasil. Foram estudados 174 alunos. Avaliaram-se os seguintes indicadores referentes ao tempo semanal acumulado com a prática de atividade física: ATIVO-300MIN (acumulou 300 minutos ou mais); ATIVO-150MIN (acumulou 150 minutos ou mais); INATIVO (não praticou atividade física). Também foram estudados os indicadores de comportamento sedentário referentes ao tempo diário despendido assistindo TV, jogando videogame e usando computador. Foram comparados os resultados do questionário e dos três recordatórios de 24 horas. Os resultados de ATIVO-300MIN, ATIVO-150MIN e INATIVO gerados pela PeNSE apresentaram alta acurácia. Esses indicadores tiveram melhor desempenho que os de comportamento sedentário, tanto em relação às estimativas de frequência quanto em relação à sensibilidade, especificidade e índice de acurácia. Os indicadores de atividade física da PeNSE apresentaram validade relativa satisfatória.

          Translated abstract

          This study evaluated the relative validity of physical activity indicators from the questionnaire used in the Brazilian National School-Based Health Survey (PeNSE) in the city of Rio de Janeiro, Brazil, based on a sample of 174 students. The following indicators of weekly physical activity were evaluated: ACTIVE-300MIN (≥ 300 minutes/week); ACTIVE-150MIN (≥ 150 minutes), INACTIVE (no physical activity). Additionally, indicators of sedentary behavior were also assessed, as daily screen time (TV, videogames, and computer). The results from the questionnaire were compared with three 24-hour recalls. The results of ACTIVE-300MIN, ACTIVE-150MIN, and INACTIVE generated by PeNSE showed high accuracy. These indicators performed better than those of sedentary behavior in relation to frequency estimates as well as sensitivity, specificity, and correct classification rate. The indicators of physical activity from PeNSE showed satisfactory relative validity.

          Translated abstract

          Se analizó la validez relativa de los indicadores de actividad física del cuestionario utilizado en la Encuesta Nacional de Salud Escolar (PeNSE por sus siglas en portugués) entre adolescentes en la ciudad de Río de Janeiro, Brasil. Se estudiaron 174 alumnos. Fueron evaluados los siguientes indicadores, referidos al tiempo semanal acumulado con actividad física: ACTIVO-300MIN (acúmulo de 300 minutos o más); ACTIVO-150MIN (acúmulo de 150 minutos o más), INACTIVO (no practica actividad física). También se han estudiado indicadores de conducta sedentaria como: tiempo diario viendo televisión, jugando videojuegos y usando la computadora. Se compararon los resultados del cuestionario y los tres recordatorios de 24 horas. Los resultados de ACTIVO-300MIN, ACTIVO-150MIN e INACTIVO, generados por PeNSE, mostraron una alta precisión. Estos indicadores se comportaron mejor que los de comportamiento sedentario, tanto con respecto a la estimativa de frecuencia, como a la sensibilidad, la especificidad e índice de precisión. Los indicadores de actividad física de PeNSE presentaron validez relativa satisfactoria.

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          Most cited references79

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          A physical activity screening measure for use with adolescents in primary care.

          To develop a reliable and valid physical activity screening measure for use with adolescents in primary care settings. We conducted 2 studies to evaluate the test-retest reliability and concurrent validity of 6 single-item and 3 composite measures of physical activity. Modifications were based on the findings of the 2 studies, and a best measure was evaluated in study 3. Accelerometer data served as the criterion standard for tests of validity. In study 1 (N = 250; mean age, 15 years; 56% female; 36% white), reports on the composite measures were most reliable. In study 2 (N = 57; mean age, 14 years; 65% female; 37% white), 6 of the 9 screening measures correlated significantly with accelerometer data. Subjects, however, had great difficulty reporting bouts of activity and distinguishing between intensity levels. Instead, we developed a single measure assessing accumulation of 60 minutes of moderate to vigorous physical activity. Evaluated in study 3 (N = 148; mean age, 12 years; 65% female; 27% white), the measure was reliable (intraclass correlation, 0.77) and correlated significantly (r = 0.40, P<.001) with accelerometer data. Correct classification (63%), sensitivity (71%), and false-positive rates (40%) were reasonable. The "moderate to vigorous physical activity" screening measure is recommended for clinical practice with adolescents.
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            Assessment of physical activity by self-report: status, limitations, and future directions.

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              Comparing methods of measurement: why plotting difference against standard method is misleading.

              When comparing a new method of measurement with a standard method, one of the things we want to know is whether the difference between the measurements by the two methods is related to the magnitude of the measurement. A plot of the difference against the standard measurement is sometimes suggested, but this will always appear to show a relation between difference and magnitude when there is none. A plot of the difference against the average of the standard and new measurements is unlikely to mislead in this way. We show this theoretically and by a practical example.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                csp
                Cadernos de Saúde Pública
                Cad. Saúde Pública
                Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz (Rio de Janeiro )
                1678-4464
                September 2014
                : 30
                : 9
                : 1861-1874
                Affiliations
                [1 ] Universidade do Estado do Rio de Janeiro Brazil
                [2 ] Fundação Oswaldo Cruz Brazil
                [3 ] Universidade de São Paulo Brazil
                [4 ] Universidade Federal de Minas Gerais Brazil
                [5 ] Instituto de Nutrição Annes Dias Brazil
                Article
                S0102-311X2014000901861
                10.1590/0102-311X00151913
                25317515
                af389154-a14a-4057-9aff-7f6c2e79b237

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielosp.org/scielo.php?script=sci_serial&pid=0102-311X&lng=en
                Categories
                Health Policy & Services

                Public health
                Sedentary Lifestyle,Motor Activity,Validation Studies,Adolescente,Vigilância,Adolescent,Surveillance,Actividad Motora,Estudios de Validación,Estilo de Vida Sedentario,Vigilancia,Atividade Motora,Estudos de Validação,Estilo de Vida Sedentário

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