不同方法测量腰围与腹内脂肪面积相关性研究

Study on correlation of waist circumference with intra-abdominal fat area

比较不同腰围测量方法与核磁共振成像（MRI）测定的腹内脂肪面积的关系，探讨最能反映腹内脂肪面积的测量方法和临床应用价值。对207名20-60岁受试对象，分别采用经脐水平（WC1）和腋中线肋弓下缘与髂棘连线中点水平（WC2）测量腰围，与MRI测量的腹内脂肪面积进行比较。男性腹内脂肪面积高于女性[（132.17±59.49对70.56±35.33）cm^2,P〈0.01]；相关分析显示WC1、WC2均与腹内脂肪面积呈正相关（r＝0.779, r＝0.809, P〈0.01）；多元线性回归分析显示WC1和WC2均与腹内脂肪面积独立相关（β＝0.553, R^2＝0.714, P〈0.01; β＝0.603, R2＝0.735, P〈0.01）。两种测量方法均能反映腹内脂肪面积的大小，其中WC1更为简便。

To explore the best measurement of waist circumference related with intra-abdominal fat area evaluated by magnetic resonance imaging （MRI）. Totally 207 participants aged 20-60 years were enrolled. Waist circumference were measured at the levels of navel （ WC1 ） and the midpoint between costal brim and iliac cest （WC2）. Intra-abdominal fat area was evaluated by MRI scan. Intra-abdominal fat area was significantly higher in men than in women [ （ 132.17 ± 59.49 vs 70.56 ± 35.33 ） cm2, P〈0.01]. Pearson correlation analysis showed that WC1 and WC2 were positively correlated with intra-abdominal fat area （ r = 0. 779, r = 0. 809, both P〈0.01 ）. Multiple linear stepwise regression analysis demonstrated that WC1 and WC2 were independently associated with intra- abdominal fat area（β=0. 553, R^2 =0. 714, P〈0.01 ; β = 0. 603, R^2 = 0. 735, P〈0.01 ）. All of the two different measurements of waist circumference parameters may reflect intra-abdominal fat area, while WC1 seems to be the simpler one.