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Cross-validation of modified fatness-specific bioelectrical impedance equations.

机译:修改后的特定于脂肪的生物电阻抗方程的交叉验证。

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The Segal fatness-specific bioelectrical impedance (BIA) equations are useful for predicting fat-free mass (FFM). Stolarczyk et al. Proposed a modified method of averaging the two equations for individuals who are neither lean nor obese, thus eliminating the need to know % BF a priori. To cross-validate this modification, we compared FFM determined using the averaging method versus hydrostatic weighing for 76 adults. Per the averaging method, accuracy for males was excellent (r =.91, SEE = 2.7 kg, E = 2.7 kg), with 78% of individuals within +/- .5% BF predicted by hydrostatic weighing. Accuracy for females was lower (r =.88, SEE = 3.0 kg, E = 3.1 kg), with % BF of 51% within +/- 3.5% of the reference method. The relative ease and practicality of the averaging method and the results of this study indicate this method may be useful with a diverse group.
机译:Segal特定于脂肪的生物电阻抗(BIA)方程可用于预测无脂肪质量(FFM)。 Stolarczyk等。提出了一种针对既不瘦也不肥胖的个人对两个方程求平均值的改进方法,从而无需先验知道%BF。为了对这种修改进行交叉验证,我们比较了76名成年人使用平均法确定的FFM与静液压称量。根据平均方法,男性的准确性极佳(r = .91,SEE = 2.7 kg,E = 2.7 kg),通过静水称重预测78%的人在BF +/- 5%之内。女性的准确性较低(r = .88,SEE = 3.0 kg,E = 3.1 kg),BF的51%在参考方法的+/- 3.5%之内。平均方法的相对简便性和实用性以及本研究的结果表明,该方法可能适用于不同的人群。

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