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ABSTRACT Objective: The objective of this study was to evaluate the impact of probiotic supplementation therapy on anthropometric values and body composition of children and adolescent with obesity. Subjects and methods: This is a nonrandomized controlled, prospective, double-blind interventional clinical trial with primary data analysis. The sample comprised 44 pubertal children and adolescent (8-17 years old) with obesity. The patients were allocated to probiotic (Lactobacillus rhamnosus) or placebo group, with matching of gender and chronological age. Both groups received nutritional guidance, and were followed for six months. In all patients the anthropometric assessment was carried out by a nutritionist and data on weight, height and waist circumference (WC) were collected. Body composition was assessed using dual emission X-ray absorptiometry (DXA). Results: After six months, both groups had increased weight, height but reduced body index mass (BMI) standard deviation score, with no differences between groups. After the intervention, both groups showed a reduction in the percentage of total body fat and an increase in lean mass, but only the placebo group showed a reduction in the percentage of trunk fat. However, the variation in these parameters did not differ between groups. Conclusions: The probiotic group does not seem to have benefited from supplementation. However, we suggest that this reduction in BMI SDS in both groups may have occurred due to improvements in diet because of the nutritional advice given throughout the therapy. We concluded that supplementation with this strain of probiotic was not effective in promoting weight loss or improving the body composition of this population.
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ABSTRACT Background: The study of body composition in patient candidates for bariatric surgery is directly related to the increase and distribution of body fat in the development of cardiovascular disease. Aim: To correlate anthropometric indicators and bioelectrical impedance in the assessment of body fat in female candidates for bariatric surgery. Methods: Cross-sectional, observational study of 88 women. The weight, height, body mass index and waist circumference data were evaluated in the anthropometric analysis. The body fat was determinate by bioelectrical impedance conducted according to the manufacturer´s recommended technique with a specific severe obesity formula. The patients were divided into two subgroups according to the average waist circumference and body mass index for better analysis of the results. Results: The group had a mean age of 39.7 years (±7.2), average weight of 125.6 kg (±16.2), mean body mass index of 48.7 kg/m2 (±6.4) and the mean waist circumference 137.6 cm (±12.4). Negative and significant relationship between BMI values waist circumference and resistance obtained by bioelectrical impedance were found. By analyzing the two groups the mean BMI and waist circumference, a significant relationship was observed, ie, the higher the degree of obesity less resistance was obtained by bioelectrical impedance. The higher is the obesity the lower is value found for resistance. Conclusion: The increase of anthropometric indicators (BMI and waist circumference) determined reduction in resistance and reactance obtained by bioelectrical impedance analysis in obese women candidates to bariatric surgery.
RESUMO Racional: O estudo da composição corporal em pacientes candidatas à cirurgia bariátrica tem relação direta com o aumento e distribuição da gordura corporal e no desenvolvimento de doenças cardiovasculares. Objetivo: Estudar a correlação entre indicadores antropométricos e da bioimpedância elétrica na avaliação da gordura corporal em mulheres candidatas à cirurgia bariátrica. Métodos: Estudo transversal, observacional com 88 pacientes. Na análise antropométrica foram avaliados os dados de peso, altura, IMC e circunferência da cintura. Para bioimpedância elétrica utilizou-se a técnica recomendada pelo fabricante do aparelho e fórmula específica para obeso grave na determinação da gordura corporal. Para melhor análise dos resultados as pacientes foram divididas em dois subgrupos de acordo com a média de circunferência da cintura e IMC. Resultados: O grupo apresentou média de idade 39,7 anos (±7,2), média de peso 125,6 kg (±16,2), média de IMC 48,7 kg/m2 (±6,4) e média de circunferência da cintura 137,6 cm (±12,4). Foram encontradas relações negativas e significativas entre os valores de IMC, circunferência da cintura e a resistência obtida através da bioimpedância elétrica. Ao analisar os dois subgrupos de valores médios de IMC e circunferência da cintura, observou-se relação significativa, ou seja, quanto maior o grau de obesidade menor é a resistência obtida através da bioimpedância elétrica. Conclusão: O aumento dos indicadores antropométricos (IMC e circunferência da cintura) determinaram redução nas variáveis resistência e reatância obtidas pela bioimpedância elétrica em mulheres candidatas à cirurgia bariátrica.