Body composition determination in children using bioelectrical impedance.
Body composition determination in children using bioelectrical impedance.
复制标题
使用生物电阻抗测定儿童的身体成分。
DOI：
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发表时间：
1988
期刊：
影响因子：
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通讯作者：
Johnson Je
中科院分区：
文献类型：
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作者：
L. Cordain;Whicker Re;Johnson Je
通过测量四极生物电阻抗(R)来估计身体成分是一项最近才在成年人中得到验证的技术。为评价这项技术在儿童中的应用，对16名年龄为11.6+/-0.9岁(平均+/-SD)的女孩和14名年龄为12.5+/-1.0岁的男孩进行了无脂肪重量(FFM)、全身钾(TBK)和阻力(R)的测量。Tbk与HT2/R呈显著正相关(P<0.001.0 1)，Ffm与HT2/R呈显著正相关(r=0.83)。阻抗测量的可靠性系数r=0.97。以下公式描述了当前儿童组的FFM：FFm(Kg)=6.86+0.81x(HT2/R)，r=0.83，P<0.001，SEE=4.08.这些数据表明，阻抗测量是儿科人群FFM的有效和可靠的预测指标。
Estimation of body composition by measurement of tetrapolar bioelectrical resistive impedance (R) is a technique only recently validated in adults. To evaluate this technique in children, 16 girls aged 11.6 +/- 0.9 yr (mean +/- SD) and 14 boys aged 12.5 +/- 1.0 yr were assessed for fat free mass (FFM) by hydrostatic weighing, total body potassium (TBK) by whole body counting of 40K, and R by an electrical impedance plethysmograph. Significant relationships (P less than 0.001) were demonstrated between TBK and ht2/R (r = 0.92), and FFM and ht2/R (r = 0.83). The reliability coefficient for the impedance measurements was r = 0.97. The following equation describes FFM in the present group of children: FFM (kg) = 6.86 + 0.81 x (ht2/R), r = 0.83, P less than 0.001, SEE = 4.08. These data suggest that impedance measurements are valid and reliable predictors of FFM in pediatric populations.