Navegando por Autor "Brandao Neto, Jose"
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Artigo Bioelectrical impedance vector analysis and phase angle in boys with duchenne muscular dystrophy(FOOD & NUTRITION RESEARCH, 2019) Lais, Lúcia Leite; Lopes, Márcia Marília Gomes Dantas; Grilo, Evellyn Câmara; Alves, Camila Xavier; Machado, Richele Janaina de Araújo; Vermeulen, Karina Marques; Brandao Neto, Jose; Vale, Sancha Helena de Lima; https://orcid.org/0000-0002-8061-7048Background: Duchenne muscular dystrophy (DMD) is a disease characterized by progressive loss of func- tional muscle mass followed by changes in body composition. Objective: This study aimed to describe and evaluate bioimpedance parameters in boys with DMD. Design: This cross-sectional, descriptive study investigated children and adolescents diagnosed with DMD. Age, weight, height, resistance, and reactance data were collected. Phase angle and bioelectrical impedance vector analysis were calculated based on resistance and reactance values. Results: We analyzed 43 boys aged between 2.7 and 19.8 years. Low-phase angle values were observed during the investigation of bioimpedance parameters. Bioelectrical impedance vector analysis showed that approximately 87% of the subjects presented vectors outside the tolerance ellipses, and only one patient presented vectors located within the 50% tolerance ellipse, indicating normally hydrated and a good body cell mass. Compared with the reference population, boys with DMD had lower levels of body cell mass. Conclusion: Based on the evidence, compared with the reference population, patients with DMD had lower levels of body cell mass. This evidence points to bioimpedance parameters as useful tools for the nutritional evaluation and clinical management of patients with DMDArtigo Gender-specific bioelectrical impedance reference values in healthy children(Clinical Nutrition Open Science, 2023) Lopes, Marcia Marília Gomes Dantas; Serpa, Karina Marques Vermeulen; Miranda, Carolinne Thaisa de Oliveira Fernandes; Alves, Camila Xavier; Lais, Lucia Leite; Brandao Neto, Jose; Vale, Sancha Helena de Lima; https://orcid.org/0000-0002-0011-576XBackground & Aims: Bioimpedance parameters are important for assessing children's body composition and health status. However, interpreting these parameters is still challenging, especially without reference data and cut-off points.This study aimed to describe gender-specific reference phase angle (PhA) values and bioelectrical impedance vector analysis (BIVA) plots for healthy Brazilian children. Methods: Children aged 6e9 years were recruited from four public schools in Natal, Brazil. Anthropometric measurements and bioelectrical impedance (BIA) were performed. The values of age, weight (kg), height (cm), resistance (U), and reactance (U) were measured. Only eutrophic children were included according to body mass index (BMI)-for-age Z-score. BIVA 2002 software was used for the construction of BIVA plots. A P-value < 0.05 was accepted as statistically significant. Results: The sample size was 108 children (boys, n¼ 49; girls, n¼ 59) with average age of 8.4 ± 0.77. The girls showed significantly higher values of resistance and resistance normalized by height (R/H) (P < 0.05) compared to the boys. Considering the 95% confidence