Physical activity level and sedentary behavior in overweight or obese children

Objetivo: identificar o nível de atividade física (AF) e comportamento sedentário (CS) de crianças com sobrepeso/obesidade e verificar o alcance das recomendações de AF.Métodos: estudo transversal, composto por crianças nascidas entre 2006 e 2009, com IMC acima do percentil 85. Acelerômetros monitoraram a AF leve, moderada, vigorosa, CS e número de passos. O teste Shuttle Run estimou o Vo2Max.Resultados e Conclusões: participaram do estudo 48 crianças, com idade média de 9,17 anos (Dp = 1,03), o nível de AF para ambos os sexos se mostrou abaixo das recomendações e o tempo em CS mostrou valores superiores ao recomendado. A maioria dos meninos e meninas não conseguiram atingir os valores propostos pela Organização Mundial da Saúde, os meninos apresentaram valores superiores para todas as variáveis analisadas e cumpriram as recomendações de atividade física de moderada a vigorosa intensidade no final de semana em maior proporção que as meninas.Objective: to identify the physical activity level (PAL) and sedentary behavior (SB) of overweight or obesity children and to verify the meet of PA recommendations.Material and Methods: cross-sectional study, composed of children was born between 2006 and 2009, with BMI above the 85th percentile. Accelerometers were used to measure PAL, SB, and number of steps/day, Vo2Max was estimated by Shuttle Run test. The Mann-Whitney test was used to compare groups (boys vs girls) and Chi square test to compare proportions.Results and Conclusions: 48 children participated in this study, with a mean age of 9.17 years (SD = 1.03), the PAL for both sexes was below the recommendations and the time in SB showed higher values than recommended. Most of the boys and girls did not meet the values proposed by the World Health Organization. The boys showed higher values for all the variables analyzed and met the recommendations for moderate to vigorous physical activity at the weekend in greater proportion than the girls

Are sleep time and quality associated with inflammation in children and adolescents? A systematic review

Sleep restriction in children can trigger the development of problems such as impaired cognition, behavioral problems, cardiovascular problems, and obesity. In addition, the inflammatory profile of children can also be influenced by sleep restriction. The aimed to review and analyze the association between time and sleep quality with inflammatory biomarkers in children and adolescents. Three electronic databases (MEDLINE, Web of Science and Scopus) were searched from August 30, 2022. The search strategy used the following descriptors: children and adolescents; sleep, and inflammatory profile. This review protocol is registered in the PROSPERO database (CRD42020188969). We obtained 2.724 results of articles with potentially relevant titles. Sixteen percent of the articles were excluded because they were duplicates, 84.3% were excluded after reading the title, and 0.9% were studied from systematic reviews or textbooks (0.9%). Accelerometers are the most commonly used method for the objective measurement of sleep time, while the PSQI questionnaire is the most commonly used subjective method to measure sleep quality. The results indicated an inconsistent association between sleep time and CRP in the literature. Sixty percent of studies used the Pittsburgh Sleep Quality Index (PSQI) for subjective assessment of sleep quality and possible sleep disorders. However, only one retrieved study showed significant association between sleep quality and CRP. Thus, sleep time does not present significant association with inflammatory biomarkers; whereas, poor sleep quality shows positive association with CRP with a lower magnitude