title: Midarm computerized tomography fat, muscle and total areas correlation with nutritional assessment data.
abstract: OBJECTIVE
  Correlated nutritional assessment data (anthropometric, bioimpedance and biochemical) with computerized tomography (CT) of total, muscle and fat midarm areas. Total body fat and fat-free mass were estimated using bioimpedance. Daily urinary urea and creatinine were also quantified. In all, 28 subjects (13 males, 15 females) were evaluated and, they were clinically divided in obese, malnourished and control subjects.
  
  
  METHODS
  Quantification of total, fat muscle midarm areas by tomography and anthropometry and total body fat and free-fat mass by bioimpedance.
  
  
  RESULTS
  CT values were 29% higher for fat area and 4-5% lower for total and muscle midarm areas compared against anthropometric data. The midarm skinfold thickness highly correlated with CT fat midarm area. Total body fat and free-fat mass bioimpedance data showed significant correlation with CT midarm data. Urinary creatinine correlated with CT muscle midarm area.
  
  
  CONCLUSIONS
  Utilization of anthropometry can lead to error estimation of fat and fat-free arm areas and that bioimpedance gives fair correlation between total body and CT midarm measurements.
authors.affiliation: Clinical Nutrition, Department of Internal Medicine, Medical School of Ribeirão Preto, São Paulo University, Ribeirão Preto, São Paulo, Brazil. aajordao@bol.com.br
authors.forename: A A
authors.initials: AA
authors.lastname: Jordão
authors.forename: A D
authors.initials: AD
authors.lastname: Bellucci
authors.forename: J E
authors.initials: JE
authors.lastname: Dutra de Oliveira
authors.forename: J
authors.initials: J
authors.lastname: Sérgio Marchini
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D001132:Arm / Q000000981:diagnostic imaging*; D001823:Body Composition; D016022:Case-Control Studies; D003404:Creatinine / Q000652:urine; D017097:Electric Impedance; D005260:Female; D006801:Humans; D008297:Male; D044342:Malnutrition / Q000000981:diagnostic imaging* / Q000378:metabolism / Q000503:physiopathology; D015596:Nutrition Assessment; D009765:Obesity / Q000000981:diagnostic imaging* / Q000378:metabolism / Q000503:physiopathology; D014057:Tomography, X-Ray Computed; D014508:Urea / Q000652:urine
chemical_list: D014508:Urea; D003404:Creatinine