Institute of Child and Adolescent Health, School of Public Health, Peking University Health Science Center, Beijing 100191, China.
Biomed Environ Sci. 2018 Jan;31(1):72-75. doi: 10.3967/bes2018.008.
To examine accuracy of body composition predicted by the Multi-Frequency Bioelectric Impedance Analysis (MF-BIA) compared with the Dual-energy X-ray Absorptiometry (DXA) in adults with obese. We measured body composition of 749 adults with obese both by the MF-BIA and DXA. The Lin's concordance correlation and the Bland-Altman plots were used to examine the consistency. The concordance correlation coefficient of %BF between the MF-BIA and DXA in men and women was 0.560, and 0.669, respectively. Compared with the DXA, the MF-BIA significantly underestimated %BF by 4.33% in men (P < 0.001), however overestimated %BF by 0.50% in women (P < 0.001). After corrected by the correction equations established in this study, the differences were significantly decreased. Therefore, the MF-BIA (TANITA MC-180) may need to be corrected in estimating body composition for adults with obese.
为了检验多频生物电阻抗分析（MF-BIA）在肥胖成年人中预测身体成分的准确性与双能 X 射线吸收法（DXA）相比。我们使用 MF-BIA 和 DXA 对 749 名肥胖成年人的身体成分进行了测量。使用林氏一致性相关系数和 Bland-Altman 图来检查一致性。男性和女性中 MF-BIA 和 DXA 之间的 BF%的一致性相关系数分别为 0.560 和 0.669。与 DXA 相比，MF-BIA 显著低估了男性中的 BF%（P < 0.001），但高估了女性中的 BF%（P < 0.001）。使用本研究中建立的校正方程进行校正后，差异显著减小。因此，对于肥胖成年人，MF-BIA（TANITA MC-180）可能需要进行校正以估计身体成分。
