Abstract Aims: This study aimed to compare the sedentary time measured using the ActiGraph GT3X accelerometer with the measurement of sitting and standing time obtained by ActivPAL inclinometers. Methods: This was a cross-sectional study conducted with a sample of 60 schoolchildren (34 males) of one elementary public school in Brazil. The students used both an ActiGraph GT3X accelerometer and an ActivPAL inclin...
Abstract Objective: To analyze the association between the pattern of sedentary time (bouts and breaks) with academic performance, with an emphasis on the mediating role of self-concept. Methods: Participants in the cross-sectional study were 394 adolescents (208 girls), aged 10–14 years, from sixth grade from Londrina, Paraná, Brazil. The sedentary time pattern was measured through accelerometry. Definitions: ...
ABSTRACT BACKGROUND: Overweight and obesity have reached epidemic prevalences. Obesity control involves many factors and needs to begin early in childhood. OBJECTIVES: To ascertain the association between tracked extracurricular sports practice and weight status; and to analyze tracking of overweight and obesity among school-aged children. DESIGN AND SETTING: Prospective cohort study conducted in 13 public scho...
Abstract Aims: This study aimed to measure light-intensity physical activity (LPA) patterns in adolescents according to weekdays and school period and investigated associations between LPA patterns and associated factors. Methods: This is a cross-sectional study with 388 students of both genders, selected from public schools from Londrina city, Parana state. LPA was measured using accelerometry for seven consec...
ABSTRACT Objective: To systematically review the literature to verify the relationship between neuromuscular fitness indicators in childhood/adolescence and bone strength variables in adulthood. Data sources: A systematic review was conducted in PUBMED, SCOPUS, SPORTDiscus, Web of Science, PsycINFO, LILACS, and SciELO, covering the entire period until March 2019. Data synthesis: The search identified 1149 studi...
ABSTRACT Introduction: In view of the growing prevalence of childhood excess weight and obesity In Brazil In recent decades, it is necessary to observe how this phenomenon occurs in the period of transition to adolescence. Objective: To verify the tracking of excess weight between childhood and adolescence in schoolchildren of both sexes. Methods: The study has a longitudinal design and the data used are part o...
Independente do teste motor e dos pontos de corte utilizados para classificação da aptidão cardiorrespiratória (ACR) em jovens espera-se semelhantes estimativas. O objetivo foi verificar a concordância na classificação da ACR determinada por dois testes de campo em adolescentes com diferentes estados nutricionais. Participaram do estudo 281 adolescentes de ambos os sexos, com idade entre 11 e 13 anos. Foram obt...
OBJETIVO: Verificar a prevalência de obesidade abdominal e sua associação com fatores demográficos, econômicos e estilo de vida em adolescentes. MÉTODOS: Estudo transversal conduzido em 644 adolescentes (397 do sexo feminino e 247 do masculino), de 15 a 19 anos. Foram coletadas informações demográficas (sexo e idade), econômicas (nível econômico) e comportamentais (atividade física, alimentação, tabagismo e eti...
OBJETIVO: Analisar a associação entre aptidão cardiorrespiratória, excesso de peso e pressão arterial elevada em repouso entre alunos da rede privada de ensino. MÉTODOS: Participaram do estudo 205 jovens de ambos os sexos com idades entre 11 e 14 anos. Foram aferidos valores de massa corporal, estatura, pressão arterial sistólica, diastólica e teste de corrida. A análise estatística foi composta de valores de m...
OBJETIVOS: Avaliar a acurácia de três pontos de corte na determinação da pressão arterial elevada em adolescentes, dada a forte relação entre o excesso de peso e valores elevados de pressão arterial. MÉTODOS: Participaram do estudo 1.021 adolescentes de ambos os sexos, selecionados de maneira aleatória nas escolas públicas e particulares de Londrina (PR). O peso corporal foi aferido por meio de balança digital,...