The use of anthropometric and dual-energy X-ray absorptiometry (DXA) measures to estimate total abdominal and abdominal visceral fat in men and women
The use of anthropometric and dual-energy X-ray absorptiometry (DXA) measures to estimate total abdominal and abdominal visceral fat in men and women
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DOI：
10.1002/j.1550-8528.1999.tb00404.x
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发表时间：
1999-05-01
期刊：
影响因子：
--
通讯作者：
Weltman, A
中科院分区：
文献类型：
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作者：
Clasey, JL;Bouchard, C;Weltman, A
目的：单层计算机断层扫描（CT）扫描提供了腹部脂肪总量（TAF）和腹部内脏脂肪（AVF）的标准测量，但由于辐射暴露，成本和可及性，该程序通常是禁止的。在本研究中，使用人体测量和双能X线吸收法（DXA）估计躯干和腹部脂肪量，以预测TAF和AVF的CT测量值（横截面积，cm（2））进行评估。研究方法和程序：腹部脂肪的CT测量在76名年龄在20-80岁之间的高加索成年人中获得了LA-LS椎间隙水平、DXA扫描和人体测量。结果表明，通过人体测量法测量的腹部矢状径是从CT图像测量的矢状径的良好预测因子（r=0.88和0.94;男性和女性的总误差[TE]分别为4.1和3.1 cm）。在男性和女性中，腰围和腹部矢状径是与TAF（r=0.87至0.93;估计标准误（SEE）= 60.7至75.4 cm（2））和AVF（r = 0.84至0.93; SEE = 0.7至30.0 cm（2））最密切相关的人体测量指标。TAF或AVF预测性最低的人体测量指标是常用的腰臀比（WHR）。躯干和腹部脂肪量的DXA估计值与TAF密切相关（r = 0.94至0.97; SEE = 36.9至50.9 cm（2））和AVF（r=0.86至0.90; SEE=4.9至27.7 cm（2））。目前的结果表明，腰围和/或腹部矢状径比更常用的WHR更能预测TAF和AVF。与这些人体测量指标相比，DXA躯干脂肪和腹部脂肪似乎是TAF的更好预测指标，但不是AVF。因此，DXA在估计AVF方面并不比人体测量学具有显著优势。
Objective: A single-slice computed tomography (CT) scan provides a criterion measure of total abdominal fat (TAF) and abdominal visceral fat (AVF), but this procedure is often prohibitive due to radiation exposure, cost, and accessibility. In the present study, the utility of anthropometric measures and estimates of trunk and abdominal fat mass by dual-energy X-ray absorptiometry (DXA) to predict CT measures of TAF and AVF (cross-sectional area, cm(2)) was assessed.Research Methods and Procedures: CT measures of abdominal fat (at the level of the LA-LS inter-vertebral space), DXA scans, and anthropometric measures were obtained in 76 Caucasian adults ages 20-80 years.Results: Results demonstrated that abdominal sagittal diameter measured by anthropometry is an excellent predictor of sagittal diameter measured from a CT image (r=0.88 and 0.94; Total Error [TE] =4.1 and 3.1 cm, for men and women, respectively). In both men and women, waist circumference and abdominal sagittal diameter were the anthropometric measures most strongly associated with TAF (r=0.87 to 0.93; Standard Error of Estimate (SEE) = 60.7 to 75.4 cm(2)) and AVF (r = 0.84 to 0.93; SEE = 0.7 to 30.0 cm(2)). The least predictive anthropometric measure of TAF or AVF was the commonly used waist-to-hip ratio (WHR). DXA estimates of trunk and abdominal fat mass were strongly associated with TAF (r =.94 to 0.97; SEE = 36.9 to 50.9 cm(2)) and AVF (r=0.86 to 0.90; SEE=4.9 to 27.7 cm(2)).Discussion: The present results suggest that waist circumference and/or abdominal sagittal diameter are better predictors of TAF and AVF than the more commonly used WHR. DXA trunk fat and abdominal fat appear to be slightly better predictors of TAF but not AVF compared to these anthropometric measures. Thus DXA does not offer a significant advantage over anthropometry for estimation of AVF.