Comparison of Two Bioelectrical Impedance Analysis Devices With Dual Energy X-ray Absorptiometry and Magnetic Resonance Imaging in the Estimation of Body Composition

• DOI: 10.1519/jsc.0b013e31824f2040
• Publication Date: 2012-02-16T13:41:54Z
• Authors: Ji-Guang Wang; Yi Zhang; Han-E Chen; Yan Li; Xiao-Guang Cheng; Li Xu; Zhe Guo; Xing-Shan Zhao; Tetsuya Sato; Qi-Yun Cao; Ke-Min Chen; Biao Li
• Keywords: Bioelectrical Impedance Analysis; Dual-Energy X-ray Absorptiometry; Dual energy; Fat free mass

We compared a 4-limb bioelectrical impedance analysis (BIA) system, HBF 359 (Omron), and 2-limb foot-to-foot device, BC 532 (Tanita), with the standard dual energy X-ray absorptiometry (DXA) magnetic resonance imaging (MRI) methods for measurement of body fat percentage (BF), skeletal muscle mass (SMM, or fat-free [FFM] 532), visceral level (VF). Body composition was measured in 200 healthy volunteers (100 men 100 women, mean age 48 years) by DXA MRI. The agreement assessed correlation paired t-test. coefficients between BIA MRI ranged from 0.71 to 0.89 BF, SMM, VF 0.77 0.90 FFM, all subjects women separately (p < 0.001 all). Compared DXA, significantly 0.001) underestimated BF -5.8% -9.6% women. MRI, corresponding underestimatons (negative) overestimations (positive) were, respectively, +1.9% = 0.02) +1.7% 0.10) +13.3% -8.5% 0.006), VF. values were -10.7 -6.2% -1.4 -2.5% +20.4 -18.0% devices are accurate estimation composition, especially FFM.