Dispêndio energético diário e níveis de lipídeos-lipoproteínas plasmáticos em adolescentes

Abstract

The aim of the present study was to analyze the impact of regular practice of physical activity facing estimates of daily energy expenditure (EE daily ) in the plasmatic lipid-lipoprotein profile in a representative sample of adolescents. The sample consisted of 452 subjects (246 females and 206 males), age between 15 and 18 years. The plasmatic lipid-lipoprotein concentrations were established through laboratory procedures. The data concerning the regular practice of physical activity were obtained though a retrospective instrument of self-recording. Estimates concerning the EE daily were established based on the caloric cost associated with the type and the duration of the activities registered by the adolescents. The sample was divided in three groups of regular practice of physical activity: the least active, < 25 o percentile of the EE daily ; the moderately active, o percentile of the EE daily ; and the most active, > 75 o percentile of the EE daily . Cutting points for an atherogenic lipid-lipoprotein risk were also established. The results of the analysis of covariance, having the participation of the body mass index controlled, showed that the HDL-C concentrations were significantly different according to the growing groups of EE daily in females (p = 0.009) and in males (p = 0.010). However, the variation behavior of the values observed was different in the two sexes. The analysis of logistic regression showed that the relative risk for lower values of HDL-C was two times higher among the least active adolescents comparing with the most active ones. In both sexes the concentrations of total cholesterol, LDL-C and triglycerides did not present significant differences among the groups of EE daily . In conclusion, more intense regular practice of physical activity as well as higher EE daily are associated with higher concentrations of HDL-C in adolescents of both sexes, regardless of the variations of body weight. The associations between EE daily and the other plasmatic components of lipid-lipoproteins treated in the present study were weak and inconsistent.

Nível de atividade física de lazer habitual em adolescentes escolares

“…14 Physical Activity Questionnaire for Children (PAQ-C) 15 e o questionário de Baecke. 16 No entanto, metade desses estudos criou seus próprios questionários [17][18][19][20][21][22][23][24][25][26] (Tabela 4). Entre os questionários usados nos estudos brasileiros, um dos poucos desenvolvidos para ser aplicado em adolescentes é o de Florindo e cols., 22 no qual foram avaliados 94 adolescentes de 11-16 anos da rede pública de ensino de Piracicaba-SP.…”

“…Guedes e cols. 19,24 e Mascarenhas e cols., 20 ao utilizarem o R-24h, não puderam mostrar análises de prevalência da prática de atividades físicas. Com isso, ao avaliar o NAFH por meio do gasto energético, medido em kcal/ kg/dia, o R-24h não permite inferir dados quanto às circunstâncias em que ocorre a prática de atividades físicas (no tempo de lazer, em casa, no trabalho), tampouco a frequência semanal dessas atividades.…”

Associação entre atividade física e marcadores bioquímicos de risco para doença cardiovascular em adolescentes de escolas públicas de Piracicaba

“…No presente trabalho observou-se alta prevalência de adolescentes insuficientemente ativos e meninos significativamente mais ativos do que as meninas. Estudo realizado por Guedes et al (2007) também mostrou elevada prevalência de adolescentes insuficientemente ativos e o maior nível de AF por parte dos meninos 20 .…”

Reprodutibilidade de questionário de atividades sedentárias para adolescentes brasileiros

“…In Brazil, few studies have examined sedentary behavior including other aspects of sedentarism besides screen recreation 9,12 . We know that behaviors acquired in early stages of life tend to go on in adulthood 13 .…”

“…Several studies used instruments in the form of a recall of time spent in screen recreation for assessing sedentary behavior in adolescents 10,12 . An alternative that shows itself as a better method for assessing general sedentary behavior is the Adolescent Sedentary Activity Questionnaire (ASAQ) 14 .…”