Prediction of visceral fat area in Japanese adults: proposal of prediction method applicable in a field setting
Prediction of visceral fat area in Japanese adults: proposal of prediction method applicable in a field setting
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DOI：
10.1038/sj.ejcn.1602576
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发表时间：
2007-06-01
影响因子：
4.7
通讯作者：
Sato, S.
中科院分区：
文献类型：
--
作者：
Demura, S.;Sato, S.
目的：利用人体内脂肪质量(IFM)预测日本成年人脐带水平内脏脂肪面积(L4-5)。方法：受试者112名，年龄25~82岁(体重指数=24.2+/-3.1 kg/m(2)，范围15.7~31.2 kg/m(2))。另有60名21~71岁成人参加交叉验证组(BMI=24.57+/-4.0 kg/m(2)，范围为17.1~34.6 kg/m(2))。我们检查了(1)基于少量皮褶厚度的IFM预测；(2)使用IFM预测VFA(L4-5)；(3)生物电阻抗分析(BIA)测量的应用。用CT测量L4~5的VFA(参考值)。采用双能X线骨密度仪(DXA)和8点触觉电极单频BIA测量总脂肪质量。结果：选择腹部、侧胸和髂上3个皮褶作为评价IFM的指标。从腰臀比、性别和年龄这三个皮褶厚度估计的腰臀比，可以解释约75%的VFA(L4-5)的变异(公式：r=863，R-2=0.745，估计的标准误差(S，E)=20.483 cm(2))。将基于BIA测量的IFM代入Eq(VFA)1中，两个方程中的平均值与参考值无显著差异，相关系数很高(r=0.860，S，E=20.902 cm(2))，尽管DXA和BIA测量的总脂肪质量有显著的平均差异。用IFMBIA(Eq(VFA)2)建立的预测方程的预测精度可与Eq(VFA)1(Eq(VFA)2：r=879，R2=0.773，s.e.E.)相当。=20.324厘米(2))。此外，将这些方程应用于交叉验证组时，两个方程都存在交叉效度。结论：本研究提出了基于三种皮褶的WHR和IFM对VFA(L4-5)的预测方程，并验证了BIA测量在日本成年人中的有效性。我们可以为现场设置提出程序。
Objective: This study aimed to develop a prediction equation for the visceral fat area at the umbilical level (VFA(L4-5)) in Japanese adults, using internal fat mass (IFM) estimated from a few anthropometric variables.Methods: Subjects were 112 adults aged from 25 to 82 years (body mass index (BMI) = 24.2 +/- 3.1 kg/m(2), ranged from 15.7 to 31.2 kg/m(2)). Another 60 adults aged from 21 to 71 years were recruited for the crossvalidation group (BMI = 24.57 +/- 4.0 kg/m(2), ranged from 17.1 to 34.6 kg/m(2)). We examined (1) the prediction of IFM based on a small number of skinfold thicknesses; (2) the prediction of VFA(L4-5) using IFM and (3) the application of bioelectrical impedance analysis (BIA) measurement. VFA(L4-5) was measured by computed tomography (reference value). Total fat mass was measured by dual-energy X-ray absorptiometry (DXA) and single-frequency BIA with 8-point tactile electrodes.Results: Three skinfolds at the abdomen, side chest and suprailiac were selected to estimate IFM. From IFM estimated using these three skinfolds, waist-to-hip ratio (WHR), sex and age, about 75% of the variance of VFA(L4-5) could be explained (EqVFA1: R = 863, R-2 = 0.745, standard error of estimate (s. e. e.) = 20.483 cm(2)). When substituting IFM based on BIA measurement (IFMBIA) into Eq(VFA)1, there were no significant mean differences from the reference in both equations, and high correlations were found (r = 0.860, s. e. e. = 20.902 cm(2)), although a significant mean difference in total fat mass was found between DXA and BIA measurements. The prediction equation using IFMBIA (Eq(VFA)2) could have prediction accuracy comparable with that of Eq(VFA)1 (Eq(VFA)2: R = 879, R-2 = 0.773, s.e.e. = 20.324 cm(2)). Furthermore, when applying these equations to the crossvalidation group, there were cross-validity in both equations.Conclusion: This study proposed a prediction equation for VFA(L4-5) from WHR and IFM based on three skinfolds, and the validity of BIA measurement in Japanese adults. We can propose the procedure for a field setting.