Coltorti A, Scalfi L, Borrelli R, Contaldo F, Diaz E
Istituto di Medicina Interna, Università di Napoli, Federico II.
Minerva Endocrinol. 1991 Jan-Mar;16(1):37-41.
Fat free mass (FFM) predicted by five bioelectrical impedance (BIA) available formulae (Segal et al., Lukaski et al., Kushner et al., Deurenberg et al., manufacturer's predictive equation) was compared with densitometrically-determined FFM (as a reference method) in two groups of young women with different anthropometric characteristics. In the farmers (very short and light individuals), none of the studied formulae was able to accurately predict FFM: this latter was overestimated in subjects with low and underestimated in those with high FFM. In the other group (INCAP employees), only values predicted by Lukaski formula were in perfect agreement with FFM, showing no bias depending on FFM changes. In conclusion, the available BIA formulae seem to be specific for population from which they were derived and could not be used on samples from other populations if not cross-validated.
在两组具有不同人体测量特征的年轻女性中，将通过五种可用的生物电阻抗（BIA）公式（西格尔等人、卢卡斯凯等人、库什纳等人、德伦伯格等人、制造商的预测方程）预测的去脂体重（FFM）与通过密度测定法确定的FFM（作为参考方法）进行了比较。在农民组（身材非常矮小且体重较轻的个体）中，所研究的公式均无法准确预测FFM：在FFM较低的受试者中，FFM被高估，而在FFM较高的受试者中则被低估。在另一组（中美洲和巴拿马营养研究所员工）中，只有通过卢卡斯凯公式预测的值与FFM完全一致，未显示出随FFM变化的偏差。总之，现有的BIA公式似乎特定于其推导所基于的人群，如果未经交叉验证，则不能用于其他人群的样本。
