[通过生物电阻抗估算肥胖者体脂百分比的预测公式]
[Prediction formulas for estimating body fat percent of obesity from bioelectrical impedance].
作者信息
Wang Jingzhong, Wang Xiaogui
机构信息
Institute of Nutrition and Food Safety, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
出版信息
Wei Sheng Yan Jiu. 2003 Jul;32(4):386-9.
The bioelectrical impedance method has become a popular and widely used method to determine body composition. In this study, body fat was measured by densitometry in a group of 66 males and 130 females obesity Chinese, aged 18 to 67 years. Body weight, body height were measured as well as total body bioelectrical impedance at 50 kHz. BMI and BF% was (27.7 +/- 3.1) kg/m2 and (38.81 +/- 6.27)% respectively (mean +/- SD). The prediction formulas for body fat from bioelectrical impedance developed in western societies, are significant underestimate body fat of Chinese obesity from body density. The prediction formulas for body fat with our subjects is; BF = 0.846 * Wt - 0.185 * Ht2/Z - 2.361 * Sex - 24.977. (r = 0.923, SEE = 3.43, F = 365.7, P < 0.001). Wt: body weight; Ht: body height; Sex; male = 1, female = 0; Z: bioelectrical impedance.
生物电阻抗法已成为一种常用且广泛应用的测定身体成分的方法。在本研究中，采用密度测定法对一组66名男性和130名女性肥胖的中国成年人（年龄在18至67岁之间）进行体脂测量。同时测量了体重、身高以及50kHz时的全身生物电阻抗。BMI和BF%分别为（27.7±3.1）kg/m²和（38.81±6.27）%（均值±标准差）。西方社会开发的基于生物电阻抗的体脂预测公式，显著低估了中国肥胖人群基于身体密度的体脂率。针对我们研究对象的体脂预测公式为：BF = 0.846 *体重 - 0.185 *身高²/阻抗 - 2.361 *性别 - 24.977。（r = 0.923，SEE = 3.43，F = 365.7，P < 0.001）。体重：体重；身高：身高；性别：男性=1，女性=0；阻抗：生物电阻抗。
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