title: Comparison of body adiposity index (BAI) and air displacement plethysmograph with estimations of % body fat in adults with Down's syndrome.
abstract: The aim of this study was to verify the agreement between body fat percentage (%BF) values evaluated by air displacement plethysmograph (ADP) and body adiposity index (BAI) in adults with Down's syndrome (DS).
  
  
  
  Forty-five adults with DS volunteered to participate in this study (19 women; age 28.7±8.5 years and 26 men; age 29.1±8.8 years). The %BF was measured by ADP (%BFADP) and estimated by anthropometric measures [%BF=(hip circumference/height)1.5-18] (%BFBAI). Agreement between methods was evaluated by paired t-test, Pearson's correlation coefficient and Bland-Altman analysis.
  
  
  
  Although high correlation coefficients were found between %BFADPand %BFBAIfor women (r=0.78, P<0.05) and men (r=0.87, P<0.05), significant differences were observed between methods for both sexes (38.9±8.9 vs 42.5±8.5% for women, and 25.8±11.3 vs 32.6±5.4% for men in %BFADPand %BFBAI, respectively). Moreover, Bland-Altman analysis showed that the mean error estimate was +3.6 (95%CI, -7.59 to 14.79) in women and +6.74 (95%CI, -7.25 to 20.72) in men.
  
  
  
  The results indicate that BAI seems to be a limited method to evaluate %BF in women and in men with DS.
authors.affiliation: Faculdade de Educação Física e Fisioterapia, Universidade Federal do Amazonas, Manaus, Brazil.|Laboratório de Biomecânica, Centro de Desportos, Universidade Federal de Santa Catarina, Florianópolis, Brazil.
authors.forename: M
authors.initials: M
authors.lastname: Rossato
authors.affiliation: Laboratório de Biomecânica, Centro de Desportos, Universidade Federal de Santa Catarina, Florianópolis, Brazil.
authors.forename: R A
authors.initials: RA
authors.lastname: Dellagrana
authors.affiliation: Faculdade de Educação Física e Fisioterapia, Universidade Federal do Amazonas, Manaus, Brazil.|Laboratório de Biomecânica, Centro de Desportos, Universidade Federal de Santa Catarina, Florianópolis, Brazil.
authors.forename: E
authors.initials: E
authors.lastname: de Souza Bezerra
authors.affiliation: Faculdade de Educação Física e Fisioterapia, Universidade Federal do Amazonas, Manaus, Brazil.
authors.forename: R M
authors.initials: RM
authors.lastname: da Costa
authors.affiliation: Faculdade de Educação Física e Fisioterapia, Universidade Federal do Amazonas, Manaus, Brazil.
authors.forename: J O L
authors.initials: JOL
authors.lastname: Dos Santos
authors.affiliation: Departamento de Educação Física, Centro de Desportos, Universidade Federal de Santa Catarina, Florianópolis, Brazil.
authors.forename: D A S
authors.initials: DAS
authors.lastname: Silva
authors.affiliation: Laboratório de Biomecânica, Centro de Desportos, Universidade Federal de Santa Catarina, Florianópolis, Brazil.
authors.forename: F
authors.identifier: 0000-0001-5632-8994
authors.initials: F
authors.lastname: Diefenthaeler
mesh_terms: D000273:Adipose Tissue; D000328:Adult; D001823:Body Composition; D015992:Body Mass Index; D004314:Down Syndrome / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D010991:Plethysmography; D011237:Predictive Value of Tests