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Effect of number of hours and days of accelerometer use on physical activity estimates in adolescents / Efeito da quantidade de horas e dia de uso do acelerômetro sobre as estimativas de atividade física em adolescentes
Barbosa, Arthur Oliveira; Prazeres Filho, Alcides; Farias Júnior, José Cazuza de.
  • Barbosa, Arthur Oliveira; Study and Research Group in Epidemiology of Physical Activity. João Pessoa. BR
  • Prazeres Filho, Alcides; Study and Research Group in Epidemiology of Physical Activity. João Pessoa. BR
  • Farias Júnior, José Cazuza de; Study and Research Group in Epidemiology of Physical Activity. João Pessoa. BR
Rev. bras. cineantropom. desempenho hum ; 21: e55973, 2019. tab, graf, ilus
Article in English | LILACS | ID: biblio-1013456
ABSTRACT
Abstract The study analyzed the effect of number of hours and days of accelerometer use on estimates of physical activity (PA) time in adolescents. Cross-sectional study of 784 adolescents from 10 to 14 years old (53.9% girls). Overlapping 95% confidence intervals (95%CI) were used to compare mean light (LPA), moderate (MPA), vigorous (VPA) and moderate to vigorous (MVPA) physical activity times and prevalence of sufficient PA levels between different numbers of hours (≥6, ≥8 and ≥10 hours/day) and days (≥3, ≥4, ≥5 and 7 days of use). The criterions of ≥6 hours/day with ≥3, ≥4, ≥5 e 7 days and ≥8 hour/day with ≥3, ≥4 e ≥5 days of accelerometer use underestimated, in average, the LPA time in 23.1 and 12.6 min/day, respectively, compared ≥10 hours/day. There were no significant differences in mean MPA, VPA and MVPA times and prevalence of sufficient PA levels between the number of hours and days of use analyzed. To produce accurate estimates of PA time in teenagers, ≥3 days of accelerometer use was adopted for ≥10 hours/day of LPA and ≥ 6 hours/day of MPA, VPA and MVPA.
RESUMO
Resumo Objetivou-se analisar o efeito da quantidade de horas e dias de uso do acelerômetro sobre as estimativas de tempo de atividade física (AF) em adolescentes. Estudo transversal com 784 adolescentes de 10 a 14 anos de idade (53,9% do sexo feminino). Os tempos médios de atividade física leve (AFL), moderada (AFM), vigorosa (AFV), moderada a vigorosa (AFMV) e as prevalências de níveis suficientes de AF entre diferentes quantidades de horas (≥6, ≥8 e ≥10 horas/dia) e dias (≥3, ≥4, ≥5 e 7 dias/uso) de uso do acelerômetro foram comparadas pelas interseções dos intervalos de confiança de 95% (IC95%). Os critérios de ≥6 horas/dia com ≥3, ≥4, ≥5 e 7 dias e ≥8 horas/dia com ≥3, ≥4 e ≥5 dias de uso do acelerômetro subestimaram, em média, o tempo de AFL em 23,1 e 12,6 min/dia, respectivamente, comparados a ≥10 horas/dia.Não houve diferenças significativas nos tempos médios de AFM, AFV, AFMV e nas prevalências de níveis suficientes de AF entre as quantidades de horas e dias de uso analisadas. Para produzir estimativas precisas do tempo de AF em adolescentes foi necessário adotar ≥3 dias de uso do acelerômetro durante ≥10 horas/dia para AFL e ≥6 horas/dia para AFM, AFV e AFMV.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Adolescent Health / Motor Activity Type of study: Observational study / Prevalence study / Risk factors Limits: Adolescent / Child / Humans Language: English Journal: Rev. bras. cineantropom. desempenho hum Journal subject: Physical Education / Sports Medicine / MEDICINA FISICA E REABILITACAO Year: 2019 Type: Article Affiliation country: Brazil Institution/Affiliation country: Study and Research Group in Epidemiology of Physical Activity/BR

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Full text: Available Index: LILACS (Americas) Main subject: Adolescent Health / Motor Activity Type of study: Observational study / Prevalence study / Risk factors Limits: Adolescent / Child / Humans Language: English Journal: Rev. bras. cineantropom. desempenho hum Journal subject: Physical Education / Sports Medicine / MEDICINA FISICA E REABILITACAO Year: 2019 Type: Article Affiliation country: Brazil Institution/Affiliation country: Study and Research Group in Epidemiology of Physical Activity/BR