Use of the activPAL® triaxial accelerometer to estimate total energy expenditure in low-income women: differences between body mass index classifications

ABSTRACT Objective: This study aimed to assess the agreement between the total energy expenditure (TEE) estimated by the activPAL® triaxial accelerometers (ACC) and the TEE measured by the doubly labeled water method (DLW), as well as to assess if these values differ between the classifications of body mass index (BMI). Materials and methods: This is a cross-sectional study. Low-income adult women (19-45y) with BMI ≥ 18.5 kg/m2 were included. Accelerometry data (activPAL®) were collected over 7 consecutive days, which were used to calculate TEE-ACC and compared with DLW data. The Bland-Altman method, concordance correlation coefficient and root mean square error were used to assess agreement between methods. Results: The sample consisted of 55 women with a mean age of 31 ± 5 years. The agreement between TEE-ACC and TEE-DLW showed a bias of -142.5 kcal (-7.1%). Among the BMI classifications, participants with normal weight show a bias of -417.1 kcal (-21.0%), participants with overweight, -87.5 kcal (-3.9%) and participants with obesity, 97.5 kcal (4.3%). Furthermore, the bias between the methods showed a significant and positive correlation with the body weight (r = 0.49; p < 0.01). Conclusion: The TEE-ACC estimates from activPAL® were reasonably accurate when compared to the TEE-DLW, especially in women with overweight and obesity, being much less accurate in individuals with normal weight.

Tendência do estado nutricional de gestantes adolescentes beneficiárias do programa de transferência condicionada de renda brasileiro Bolsa Família no período 2008-2018 / Trend of the nutritional status of pregnant adolescent beneficiaries of the Brazilian Bolsa Família conditional cash transfer program in the 2008-2018 period

Resumo Trata-se de um estudo ecológico que objetivou analisar a tendência do estado nutricional de gestantes adolescentes beneficiárias do programa brasileiro de transferência condicionada de renda, Bolsa Família, no período 2008-2018. Foram avaliados dados secundários de gestantes adolescentes beneficiárias do Programa Bolsa Família no período de janeiro de 2008 a dezembro de 2018, extraídos dos relatórios públicos do Sistema de Vigilância Alimentar e Nutricional WEB. Foram consultados os relatórios de acompanhamento das condicionalidades de saúde consolidados de acesso público do Programa Bolsa Família, sempre considerando a 2ª vigência. Observou-se uma variação anual de -1,2% (IC95%: [-1,6; -0,8] p<0,01) na prevalência de baixo peso na amostra estudada. Com relação as prevalências de sobrepeso e obesidade no país, observou-se variações anuais de 2,9% (IC95%: [2,0; 3,7] p<0,01) e 7,5% (IC95%: [5,7; 9,3] p<0,01), respectivamente. Conclui-se que, no período avaliado, a prevalência de baixo peso entre as gestantes adolescentes beneficiárias do Programa Bolsa Família apresentou uma tendência decrescente, ao passo que as prevalências de sobrepeso e obesidade apresentam uma tendência crescente em todo o Brasil.

Abstract This ecological study aimed to analyze the trend of the nutritional status of pregnant adolescent beneficiaries of the Brazilian Bolsa Família conditional cash transfer program in the 2008-2018 period. We evaluated secondary data of pregnant adolescent beneficiaries of the Bolsa Família Program from January 2008 to December 2018, extracted from the public reports of the WEB Food and Nutrition Surveillance System. We accessed the monitoring reports on the consolidated public-access health conditionalities of the Bolsa Família Program, always considering the second validity. An annual variation of -1.2% (95%CI: [-1.6; -0.8] p<0.01) was observed in the prevalence of underweight in Brazil in the studied sample. The prevalence of overweight and obesity in the country had annual variations of 2.9% (95%CI: [2.0; 3.7] p<0.01) and 7.5% (95%CI: [5.7; 9.3] p<0.01), respectively. We conclude by saying, that, in the evaluated period, the prevalence of underweight among pregnant adolescent beneficiaries of the Bolsa Família Program showed a decreasing trend, while the prevalence of overweight and obesity increased throughout Brazil.

Association between COVID-19 diagnosis and economic class, race/skin color and social distancing in Brazilian university students / Associação entre o diagnóstico de COVID-19 e a classe econômica, raça/cor da pele e distanciamento social em universitários brasileiros

ABSTRACT: Purpose: To determine the association between diagnosis of COVID-19 and the economic class, race/skin color, and adherence to social distancing in Brazilian university students. Methods: This is a nationwide cross-sectional study carried out with online questionnaires applied to Brazilian university students, at 94 universities in the public and private education network. Self-reported age, sex, economic class data, race/skin color, COVID-19 diagnosis, and adherence to social distancing measures were collected. Results: 5,984 individuals were evaluated. No significant association was found between the diagnosis of COVID-19 and economic class and race/skin color in the multivariable analysis. However, we observed that there were significant associations between the diagnosis of COVID-19 and partial adherence to social distancing, with leaving home only for going to work (PR: 1.35; 95% CI: 1.10­1.66; p < 0.01) and with non-adherence to social distancing (PR: 1.96; 95% CI: 1.29­2.97; p <0.01). Conclusion: The diagnosis of COVID-19 was associated with age, non-adherence and partial adherence to social distancing measures in Brazilian university students, but was not associated with race/skin color and economic class.

Objetivo: Verificar a associação entre o diagnóstico de COVID-19 e a classe econômica, raça/cor da pele e adesão às medidas ao distanciamento social em universitários brasileiros. Métodos: Estudo transversal, de abrangência nacional, realizado com universitários brasileiros. Foram coletados dados autorreferidos de idade, sexo, classe econômica, raça/cor, diagnóstico do COVID-19 e adesão às medidas de distanciamento social. Resultados: 5.984 indivíduos foram avaliados. Não foi encontrada associação significativa entre o diagnóstico de COVID-19, a classe econômica e raça/cor na análise multivariável. Observamos que houve associações significativas entre o diagnóstico de COVID-19 e adesão parcial ao distanciamento social (RP: 1,35; IC 95%: 1.10­1.66; p < 0,01) e com a não adesão ao distanciamento social (RP: 1,96; IC95%: 1.29­2.97; p < 0,01). Conclusão: O diagnóstico de COVID-19 foi associado à idade, não adesão e adesão parcial às medidas de distanciamento social em universitários brasileiros, mas não se associou à raça/cor e classe econômica. (AU)