title: [Bioelectrical impedance and visceral fat: a comparison with computed tomography in adults and elderly].
abstract: OBJECTIVE
  To evaluate the association between electrical bioimpedance analysis (BIA) and visceral fat (VF) in adult and elderly patients.
  
  
  METHODS
  This was a cross-sectional study, with a sample of 191 subjects (52% women, 49% elderly) stratified by sex, age and body mass. Computerized tomography (VF area) and BIA (percentage of total body fat (%TBF-BIA), phase angle, reactance and resistance) data were generated. Statistical analysis was based on Pearson's Correlation Coefficient, Anova, Pearson's Chi-square, and ROC curves.
  
  
  RESULTS
  VF areas > 130 cm² were more prevalent among the elderly and among men. Adult females showed a stronger correlation between GV and %TBF-BIA. The other groups showed similar results and statistically significant correlations. Correlations between GV and phase angle were weak and not statistically significant. ROC Curves analyzes showed the following %TBF-BIA, which identified excess VF: for male subjects: 21.5% (adults) and 24.25% (elderly); for female subjects: 35.05% (adults) and 38.45% (elderly) with sensitivity of 78.6%, 82.1%, 83.3%, and 66.7%, and specificity of 70.6%, 62.5%, 79.1%, and 69%, respectively.
  
  
  CONCLUSIONS
  BIA was found to have satisfactory sensitivity and specificity to predict VF; however, other devices and other techniques should be investigated to improve VF prediction.
authors: Conselho Nacional de Desenvolvimento Científico e Tecnológico (CEIAE-CNPq), Centro de Estudos e Intervenção na Área do Envelhecimento, Universidade Federal da Bahia (UFBA), Salvador, BA, Brasil. mieickemberg@yahoo.com.br
authors: Michaela
authors: M
authors: Eickemberg
authors: Carolina Cunha de
authors: CC
authors: Oliveira
authors: Anna Karla Carneiro
authors: AK
authors: Roriz
authors: Gardênia Abreu Vieira
authors: GA
authors: Fontes
authors: Adriana Lima
authors: AL
authors: Mello
authors: Lílian Ramos
authors: LR
authors: Sampaio
mesh_terms: D000328:Adult; D015992:Body Mass Index; D002318:Cardiovascular Diseases / Q000517:prevention & control; D017097:Electric Impedance; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D050152:Intra-Abdominal Fat / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D014057:Tomography, X-Ray Computed; D055815:Young Adult