Análise comparativa de métodos de avaliação da composição corporal em homens sadios e em pacientes com doença pulmonar obstrutiva crônica: antropometria, impedância bioelétrica e absortiometria de raios-X de dupla energia

• Autor(a) principal: Freitas Júnior, Ismael Forte
• Data de Publicação: 2005
• Outros Autores: Paiva, Sergio Alberto Rupp de [UNESP], Godoy, Irma de [UNESP], Smaili Santos, Suhaila Mahmoud, Campana, Alvaro Oscar
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://www.scielo.org.ve/scielo.php?script=sci_arttext&pid=S0004-06222005000200004; http://hdl.handle.net/11449/68268
• topic: adipose tissue; analysis of variance; anthropometry; body composition; body mass; case control study; chronic obstructive lung disease; comparative study; histology; impedance; middle aged; radiodensitometry; reproducibility; Adipose Tissue; Analysis of Variance; Anthropometry; Body Composition; Body Mass Index; Case-Control Studies; Densitometry, X-Ray; Electric Impedance; Pulmonary Disease, Chronic Obstructive; Reproducibility of Results

The aim of this study was to examine the agreement between the results of body fat (BF and BF%), fat-free mass (FFM) and FFM index (FFMI= FFM/height2) as estimated by skinfold anthropometry (ANT), bioelectrical impedance (BIA) and dual-energy X-ray absorptiometry (DXA) in two groups of men (> or = 50 y), one comprising healthy individuals (n=23) and the other, patients with chronic obstructive pulmonary disease (COPD) (n=24). Comparisons between body composition techniques were done by repeated measures ANOVA; the Bland & Altman procedure was used to analyse agreement. RESULTS AND CONCLUSIONS: 1) comparison between healthy and COPD groups showed significant differences between all studied variables; 2) in the healthy group, values for BF, BF%, FFM and FFMI were not significantly different when BIA or ANT was compared to DXA; however, in COPD, values for BF and BF% were significantly higher and for FFM and FFMI significantly lower when BIA was compared to DXA; in contrast, no differences were shown between values for these variables when ANT was compared with DXA; 3) Bland & Altman test, in both groups, showed no agreement between BIA and DXA and between ANT and DXA; it was also shown that body fat was overestimated and fat free mass underestimated by BIA in relation to DXA.