Validity of leg-to-leg bioelectrical impedance measurement in males.
Validity of leg-to-leg bioelectrical impedance measurement in males.
复制标题
男性腿间生物电阻抗测量的有效性。
DOI：
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发表时间：
2001
影响因子：
1.7
通讯作者：
A. Utter
中科院分区：
文献类型：
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作者：
A. Cable;David C. Nieman;M. Austin;E. Hogen;A. Utter
背景
本研究确定了腿间生物电阻抗分析 (BIA) 系统（Tanita 体脂肪分析仪，TBF 105，Tanita Corporation of America, Inc.，Arlington Heights, IL）在估计男性身体成分方面的有效性。
方法
实验设计
使用 BIA 和水下称重估算去脂体重 (FFM) 并进行比较。
设置
受试者是从社区招募的。
参加者
招募了异质男性组（N=192），平均+/-SD年龄为39.0+/-16.8岁；体重指数，26.0+/-4.0 kg/m2，体脂百分比，18.1+/-8.9%。
措施
在 BIA 测试之前，受试者必须遵守标准 BIA 测试指南，并在穿着泳衣、光脚站在分析仪脚垫上的受试者中测量生物电阻抗。使用标准程序进行水下称重，直接测量残留体积。
结果
通过水下称重测量的 FFM 和 BIA 与通过两种方法测量的平均 FFM 之间的 Bland-Altman 差异图显示没有系统差异（平均差异，0.07+/-3.5 kg）。水下称重的 FFM 估计为 66.3+/-8.6 kg，BIA 估计为 66.2+/-7.7 kg（r=0.92，p<0.001；SEE 3.5 kg）。
结论
这些数据表明，与水下称重相比，腿间生物电阻抗系统可以准确评估异质男性群体的 FFM。
BACKGROUND
This study determined the validity of the leg-to-leg bioelectrical impedance analysis (BIA) system (Tanita Body Fat Analyzer, TBF 105, Tanita Corporation of America, Inc., Arlington Heights, IL) in estimating body composition in males.
METHODS
EXPERIMENTAL DESIGN
Fat-free mass (FFM) was estimated using BIA and underwater weighing, and compared.
SETTING
Subjects were recruited from the community.
PARTICIPANTS
Heterogeneous group of males (N=192) was recruited, with a mean+/-SD age of 39.0+/-16.8 yrs; body mass index, 26.0+/-4.0 kg/m2, percent body fat, 18.1+/-8.9 percent.
MEASURES
Prior to BIA testing, subjects were required to adhere to standard BIA testing guidelines, and bioelectrical impedance was measured in subjects standing erect with bare feet on the analyzer's footpads, and wearing a swimsuit. Underwater weighing was conducted using standard procedures, with direct measurement of residual volume.
RESULTS
A Bland-Altman plot of difference between FFM measured by underwater weighing and BIA versus average FFM by the two methods showed no systematic difference (mean difference, 0.07+/-3.5 kg). FFM was estimated at 66.3+/-8.6 kg with underwater weighing, and 66.2+/-7.7 kg with BIA (r=0.92, p<0.001; SEE 3.5 kg).
CONCLUSIONS
These data indicate that the leg-to-leg bioelectrical impedance system accurately assesses FFM in a heterogenous group of males when compared to underwater weighing.