Breakfast skipping and cardiometabolic risk factors in adolescents: Systematic review

ABSTRACT OBJECTIVE To systematically review the results of the association between breakfast skipping and cardiometabolic risk factors in adolescents. METHODS The articles were searched in May 2020 from PubMed, Virtual Health Library, Scopus, Web of Science and Scientific Electronic Library Online (SciELO). The review included observational studies conducted with adolescents (10-19 years old), which estimated the association of breakfast skipping with at least one outcome (markers of body adiposity, blood pressure, serum lipid and glucose levels). Regarding the risk of bias, the articles were evaluated using the Research Triangle Institute (RTI) Item Bank on bias risk and accuracy of observational studies. The quality of the evidence was assessed by the Grade rating. RESULTS A total of 43 articles involving 192,262 participants met the inclusion criteria and were considered in this review. The prevalence of breakfast skipping ranged from 0.7% to 94% and 60.5% of studies were classified with low risk of bias. The significant association between breakfast skipping and cardiometabolic risk factors was found in twenty-nine cross-sectional articles (n = 106,031) and four longitudinal articles (n = 5,162) for excess adiposity, in three articles (n = 8,511) for high total cholesterol levels, low-density lipoprotein and triglycerides, and in three studies (n = 6,303) for high blood pressure levels. However, there was no significant association between breakfast skipping and glycemic profile. According to the Grade rating, all the associations had low quality of evidence. CONCLUSION The results of this review suggest that breakfast skipping is associated with cardiometabolic risk factors in adolescents aged 10 to 19 years. However, considering the low quality of the evidence, the present results should be interpreted carefully. In addition, our findings highlight the importance of standardizing the definition of breakfast skipping and that more prospective studies are needed to determine how skipping breakfast can affect cardiometabolic risk factors in the long time.

Estado nutricional de crianças de descendência haitiana e suas características demográficas, socioeconômicas e de saúde em Cuiabá-MT, Brasil / Nutritional status of children of Haitian descent and their demographic, socioeconomic and health characteristics in Cuiabá, State of Mato Grosso (MT), Brazil

Resumo O objetivo deste estudo foi analisar a distribuição das variáveis antropométricas de acordo com características demográficas, socioeconômicas e de saúde em crianças, de zero a cinco anos, de descendência haitiana residentes em Cuiabá-MT, Brasil. Consiste em estudo transversal, com dados coletados entre agosto/2016 e fevereiro/2017. As variáveis dependentes foram o índice de massa corporal (IMC) e a estatura/idade em escore-z, sendo utilizado o Teste t de Student e ANOVA na análise estatística. Foram avaliadas 67 crianças, 73,2% com até 24 meses de idade e 34,3% do sexo masculino. Observou-se expressiva proporção de famílias com renda per capita inferior a 1/4 de salário mínimo (65,6%), sem acompanhamento domiciliar pela Estratégia Saúde da Família (88,1%) e elevada carga horária de trabalho das mães (43,3%). O início do pré-natal até o terceiro mês de gestação e sexo feminino foram associados a maiores médias de IMC. Quanto a estatura/idade, foi identificada associação com menores médias para domicílios com mais de um morador por cômodo, faixa etária mais elevada da criança e cuidado da criança em creches. Apesar de poucos fatores apresentaram associação com os indicadores antropométricos avaliados, é necessário atentar-se para as condições socioeconômicas precárias nas quais estas crianças estão inseridas.

Abstract The scope of this study was to analyze the distribution of anthropometric variables according to demographic, socioeconomic, and health characteristics among children of Haitian descent between 0 and 5 years of age living in Cuiabá-MT. It consists of a cross-sectional and census-based study with data collected between August 2016 and February 2017. The dependent variables were body mass index (BMI) and height-for-age z-score, using Student's t-Test and ANOVA in the statistical analysis. A total of 67 children, 73.2% to 24 months of age and 34.3% being male, were evaluated. There was a significant proportion of families with per capita income of less than 1/4 of the minimum wage (65.6%), with no home monitoring for the family health strategy (88.1%), and long working hours for mothers (43.3%). The onset of prenatal care until the third month of pregnancy and female sex were associated with higher BMI averages. For height-for-age, an association with lower mean values was found for households with more than one resident per room, higher age range of the child, and child-care in daycare centers. Thus, although few factors have an association with the anthropometric indications evaluated, it is necessary to consider the precarious socioeconomic conditions in which these children find themselves.

Effectiveness of a home-based exercise program on anthropometric and metabolic changes among school cooks / Efetividade de um programa de exercícios físicos domiciliares sobre as modificações antropométricas e metabólicas em merendeiras

Abstract The scope of this study was to evaluate the anthropometric and metabolic changes after low intensity home-based exercise. In the school year of 2007, 95 school cooks in the city of Niteroi (State of Rio de Janeiro, Brazil) were randomly assigned to one of the following groups: home-based exercise (n = 47) or control group (n = 48). The home-based exercise program was performed three times a week, during 40 minutes at moderate intensity. Anthropometric variables were collected at the baseline and after 4 and 8 months, whereas biochemical and individual food intake were measured at the baseline and after 8 months. Energy expenditure was evaluated only at the baseline. The home-based exercise group exhibited a greater weight loss (-0.9 vs. -0.2; p = 0.05) in comparison with controls during the follow-up and the same pattern was found for BMI (-0.1 vs. +0.1; p = 0.07), although without statistical significance. Exercise showed no effects on waist circumference, lipid profile and glucose. In conclusion, greater weight loss was observed in the group that performed low intensity home-based exercise and this strategy can assist in body weight control even without alterations in terms of lipids and glucose.

Resumo O presente estudo teve como objetivo avaliar as alterações metabólicas e antropométricas após a realização de programa de exercício físico domiciliar de baixo volume. No ano escolar de 2007, 95 merendeiras escolares do município de Niterói (Rio de Janeiro/Brasil) foram alocadas aleatoriamente nos seguintes grupos: exercício físico domiciliar (n = 47) e controle (n = 48). O programa de exercício físico domiciliar consistiu na realização exercícios de moderada intensidade, três vezes na semana, 40 minutos. Variáveis antropométricas foram coletadas na linha de base, aos 4 e 8 meses, sendo as variáveis bioquímicas e o consumo de alimentos obtidos na linha de base e aos 8 meses. O grupo de exercícios demonstrou uma maior redução do peso corporal (-0,9 vs. -0,2; p = 0,05), tendo o mesmo padrão sido observado para o IMC (-0,1 vs. + 0,1; p = 0,07), embora sem significância estatística. Não foram observados efeitos do exercício para a circunferência de cintura, perfil lipídico e glicose. Concluindo, uma maior perda de peso foi observada no grupo que realizou o programa de exercícios domiciliares de baixo volume podendo essa estratégia auxiliar no controle do peso corporal, mesmo sem alterações para lipídeos e glicose.