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首页> 外文期刊>Journal of clinical densitometry >Comparison of body composition by bioelectrical impedance and dual-energy x-ray absorptiometry in overweight/obese postmenopausal women.
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Comparison of body composition by bioelectrical impedance and dual-energy x-ray absorptiometry in overweight/obese postmenopausal women.

机译：超重/肥胖绝经后妇女通过生物电阻抗和双能X线骨密度仪进行人体成分比较。

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The purpose of this study was to compare the Rudolph J. Liedtke (RJL) Sciences Quantum II system bioelectrical impedance analyzer (BIA) with the fan beam Hologic dual-energy X-ray absorptiometry (DXA, software V8.26a) for assessing body composition in postmenopausal obese women. Thirty-three postmenopausal overweight/obese females (mean age: 53.9+/-6.0 yr; mean weight: 91.3+/-17.5 kg; and mean body mass index [BMI]: 33.1+/-5.7 kg/m2) were evaluated for comparison of body weight (BW), fat mass (FM), percent FM (%FM), and fat free mass (FFM). The comparison was assessed by RJL Quantum 2 Cyprus 2.6 (Clinton Township, MI) BIA vs fan beam DXA Hologic QDR-4500A software V8.26a (ODR 4500 Hologic, Inc., Waltham, Mass). RJL-BIA and DXA measurements were performed at the same time. BW was measured using a balance scale (Detecto; Web City, MO) and these results were used for the RJL-BIA analysis. Balance weight was compared with DXA BW. Correlations between DXA and RJL-BIA for BW, FM, %FM, and FFM were 0.998, 0.980, 0.782, and 0.926 (p<0.01), respectively. Bland-Altman plots demonstrated general agreement between methods for BW, FM, %FM, and FFM. However, for the latter 3 metrics of body composition, one unit change using BIA does not correspond to one unit change using DXA, as there were systematic disagreements at either end of the range of values. But RJL-BIA could be a valid method for assessing body composition of overweight/obese postmenopausal women once appropriate validated regression equations have been developed.
机译：这项研究的目的是将Rudolph J. Liedtke（RJL）Sciences Quantum II系统生物电阻抗分析仪（BIA）与扇形光束Hologic双能X射线吸收仪（DXA，软件V8.26a）进行比较，以评估人体成分在绝经后肥胖妇女中。评估了33名绝经后超重/肥胖女性（平均年龄：53.9 +/- 6.0岁;平均体重：91.3 +/- 17.5 kg;平均体重指数[BMI]：33.1 +/- 5.7 kg / m2）体重（BW），脂肪质量（FM），FM百分比（％FM）和无脂肪质量（FFM）的比较。比较通过RJL Quantum 2 Cyprus 2.6（密歇根州克林顿镇）的BIA与扇形束DXA Hologic QDR-4500A软件V8.26a（ODR 4500 Hologic，Inc.，马萨诸塞州沃尔瑟姆）进行了评估。 RJL-BIA和DXA测量同时进行。使用天平（Detecto; Web City，MO）测量体重，并将这些结果用于RJL-BIA分析。将平衡重与DXA BW进行比较。 DXA和RJL-BIA之间的BW，FM，％FM和FFM的相关性分别为0.998、0.980、0.782和0.926（p <0.01）。 Bland-Altman图显示了BW，FM，％FM和FFM方法之间的一般一致性。但是，对于后三个身体成分指标，使用BIA进行的单位更改不对应于使用DXA进行的单位更改，因为在值范围的两端存在系统上的分歧。但是，一旦制定了适当的经过验证的回归方程，RJL-BIA可能是评估超重/肥胖绝经后妇女身体成分的有效方法。

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