VERUSKA MAGALHAES SCABIM
Projetos de Pesquisa
Unidades Organizacionais
Instituto Central, Hospital das Clínicas, Faculdade de Medicina
LIM/38 - Laboratório de Epidemiologia e Imunobiologia, Hospital das Clínicas, Faculdade de Medicina
LIM/38 - Laboratório de Epidemiologia e Imunobiologia, Hospital das Clínicas, Faculdade de Medicina
2 resultados
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- Very low-calorie diet in candidates for bariatric surgery: change in body composition during rapid weight loss(2019) SERAFIM, Marcela Pires; SANTO, Marco Aurelio; GADDUCCI, Alexandre Vieira; SCABIM, Veruska Magalhaes; CECCONELLO, Ivan; CLEVA, Roberto deOBJECTIVE: To analyze the changes in the body composition of morbidly obese patients induced by a very low-calorie diet. METHODS: We evaluated 120 patients selected from a university hospital. Body composition was assessed before and after the diet provided during hospitalization, and changes in weight, body mass index, and neck, waist and hip circumferences were analyzed. Bioimpedance was used to obtain body fat and fat-free mass values. The data were categorized by gender, age, body mass index and diabetes diagnosis. RESULTS: The patients consumed the diet for 8 days. They presented a 5% weight loss (without significant difference among groups), which represented an 85% reduction in body fat. All changes in body circumference were statistically significant. There was greater weight loss and a greater reduction of body fat in men, but the elderly showed a significantly higher percentage of weight loss and greater reductions in body fat and fat-free mass. Greater reductions in body fat and fat-free mass were also observed in superobese patients. The changes in the diabetic participants did not differ significantly from those of the non-diabetic participants. CONCLUSIONS: The use of a VLCD before bariatric surgery led to a loss of weight at the expense of body fat over a short period, with no significant differences in the alteration of body composition according to gender, age, body mass index and diabetes status.
- Modified body adiposity index for body fat estimation in severe obesity(2017) BERNHARD, A. B.; SCABIM, V. M.; SERAFIM, M. P.; GADDUCCI, A. V.; SANTO, M. A.; CLEVA, R. deBackgroundThe body adiposity index (BAI) comprises a simple method for estimating body fat (BF) that needs to be validated in patients with severe obesity. The present study aimed to determine BAI accuracy with respect to the determination BF in patients with severe obesity. MethodsA cross-sectional prospective study comparing two methods for BF estimation was conducted in 433 patients with severe obesity between August 2012 to December 2014. BF was estimated by bioelectrical impedance analysis (BIA) with specific equations developed for BF estimation in patients with severe obesity and BAI. The BF estimation in 240 patients with severe obesity (Group 1: G1) was used to evaluate BAI limitations and to develop a specific equationin this population. The new equationproposed was validated in another 158 patients with severe obesity (Group 2: G2). ResultsThere was a significant difference between BF determination by BIA and BAI (P=0.039). The mean (SD) BF in G1 was 52.3%(6.1%) determined by BIA and 51.6%(8.1%) determined by BAI. Sex, waist-hip ratio (WHR) and obesity grade determined significant errors on BF estimation by BAI. A new equation(modified body adiposity index; MBAI) was developed by linear regression to minimise these errors [MBAI%=23.6+0.5x(BAI); add 2.2 if body mass index50kgm(-2) and 2.4 if WHR1.05]. The new equationreduced the difference [1.2% (5.9%), P<0.001 to 0.4%(4.12%), P=0.315] and improved the correlation (0.6-0.7) between methods. ConclusionsBAI present significant limitations in severe obesity and MBAI was effective for BF estimation in this population.