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首页> 外文期刊>African Journal of Biotechnology >Estimation of segmental fat free mass in Taiwanese elderly females by bioelectrical impedance analysis with new mathematical model
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Estimation of segmental fat free mass in Taiwanese elderly females by bioelectrical impedance analysis with new mathematical model

机译：利用新的数学模型通过生物电阻抗分析估算台湾老年女性的无段脂肪量

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摘要

The aim of this study was to develop new predictive equations for evaluating the fat free mass (FFM) of body segments in Taiwan elderly female. Modified bioelectrical impedance analysis with eight electrodes?(BIA8) and referenced standard dual-energy x-ray absorptiometry (DXA) was applied to measure the segment body composition. The criterion of FFM values determined by DXA and predictive values by BIA were compared. After analyzing by linear regression, we obtained the FFM predictive equations by BIA8?for segments. The Bland-Altman analysis was used to evaluate the differences of mean estimated segmental FFM from equations by BIA8and by DXA. The correlation coefficient (R) of FFM between values measured by DXA and estimated by BIA8?in whole body, lower limbs, upper limbs and trunk were 0.89, 0.64, 0.60 and 0.81, respectively, and the differences of mean FFM were 2.39, 0.94, 0.27 and 2.02 kg, respectively.?With the?relatively higher weight coefficient ofH2/Z (H, height; Z, impedance values), it plays a critical role in our new predictive equation. For the greater performance in prediction of fat free mass?by our new BIA model, it provides?potential in monitoring the body composition in female elderly by greater precision way.
机译：这项研究的目的是开发新的预测方程，以评估台湾老年女性身体各部分的无脂肪质量（FFM）。采用八个电极（BIA8）和参考标准双能X射线吸收法（DXA）进行改进的生物电阻抗分析，以测量段体成分。比较了DXA确定的FFM值标准和BIA确定的预测值。通过线性回归分析后，我们通过BIA8？获得了分段的FFM预测方程。使用Bland-Altman分析来评估BIA8和DXA从方程式得出的平均估计分段FFM的差异。 DXA测量和BIA8？估计值在整个身体，下肢，上肢和躯干中的FFM相关系数（R）分别为0.89、0.64、0.60和0.81，平均FFM之差为2.39、0.94分别为0.27和2.02 kg。随着H2 / Z的重量系数相对较高（H，高度; Z，阻抗值），它在我们的新预测方程中起着至关重要的作用。为了通过我们的新BIA模型在预测无脂肪量方面发挥更大的性能，它提供了以更高的精确度监测女性老年人身体成分的潜力。

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