Comparison of body composition by bioelectrical impedance analysis and dual-energy X-ray absorptiometry in Hispanic diabetics

摘要: OBJECTIVE: The purpose of this study was to compare Tanita tetrapolar foot-to-foot bioelectrical impedance analysis (Model TBF-310, Corporation America, Inc, Arlington Heights, IL; Tanita-BIA) and fan beam dual-energy X-ray absorptiometry (Hologic Discovery A v12.6, Waltham, MA; DXA) in diabetic patients. METHODS: Seventy Hispanic participants (23 male, 47 female; mean age: 53.03 ± 10.32 yrs; weight: 81.45 17.65 kg; body mass index: 31.40 6.80 kg/m(2)) were selected from the Loma Linda University En Balance culturally-sensitive Spanish diabetes education program using baseline data. RESULTS: DXA vs Tanita-BIA fat (FM), percent (%FM), fat-free (FFM) compared Pearson's (FM: 0.96, %FM: 0.91, FFM: 0.95), Spearman's rank 0.94, 0.93) correlation coefficients. Bland-Altman analyses also used difference (DXA - BIA) average BIA results showed general agreement between two methods. When regressed onto DXA, adjusted R(2) was: FM=0.91; %FM=0.83; FFM=0.90. Gender combined concordance correlations with 95% confidence intervals calculated a bootstrap re-sampling data found high associations [FM: 0.93 (95% CI: 0.89, 0.96)], [%FM: 0.86 0.79, 0.90)], [FFM: 0.96)]. CONCLUSION: may provide valid measures fat, diabetics, could be convenient practical approach for assessment community-based research.