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首页> 外文期刊>Hong Kong Journal of Paediatrics >New Skinfold-thickness Equation for Predicting Percentage Body Fat in Chinese Obese Children
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New Skinfold-thickness Equation for Predicting Percentage Body Fat in Chinese Obese Children

机译：预测中国肥胖儿童体脂百分比的新的皮褶厚度方程

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Objective: To validate existing skinfold thickness predicting equations and to develop an equation for estimating body fat composition in obese Chinese children. Design: Cross-sectional study. Subjects: One hundred and thirty-eight Chinese obese children, 37 girls and 101 boys with mean age and body mass index (BMI) of 11.9 years (SD 2.7) and 29.7 Kg/m2 (SD 4.8) respectively, referred for medical assessment were recruited. Measurements and methods: All subjects underwent physical examination and anthropometric measurement. Total percentage of body fat (%FM) was measured by dual-energy X-ray absorptiometry (DEXA) scan (%FM-DEXA). Three skinfold-thickness predicting equations for estimating %FM (%FM-SF) were compared with the measured %FM-DEXA. Results: The mean male and female percentage body fat measured by DEXA were 36.6% (SD 6.8) and 39.0% (SD 4.2) respectively. There was significant gender difference in %FM-DEXA (p=0.05). The Durnin & Rahaman equation (%FM-DR-SF) best predicted %FM in girls with a mean difference of %FM-DEXA-DR-SF of 0.76% (SD 4.0) but overestimated %FM in boys with a mean difference of -1.01% (SD 5.7). Lohman equation was the best in estimating %FM in boys. The mean differences of %FM-DEXA-L-SF were -0.94% (SD 5.62) and -2.58% (SD 4.5) for boys and girls respectively. The gender difference as documented by DEXA was only demonstrated by the Lohman equation. Slaughter equation overestimated %FM in both genders. The mean differences %FM-DEXA-Sla-SF was -8.1% (SD 8.6%) in boys and -5.2% (SD 5.28%) in girls. A new predicting equation was derived for local use. Conclusion: Existing equations are inaccurate in estimating percentage of body fat in obese Chinese children. A specific equation based on skinfold thickness was derived for estimation of %FM in obese Chinese children.
机译：目的：验证现有的皮褶厚度预测公式，并建立一个估算肥胖中国儿童体内脂肪成分的公式。设计：横断面研究。受试者：138名中国肥胖儿童，37名女孩和101名男孩，平均年龄和体重指数（BMI）为11.9岁（SD 2.7）和29.7 Kg / m 2 （SD 4.8 ）分别被推荐进行医学评估。测量和方法：对所有受试者进行身体检查和人体测量。通过双能X射线吸收法（DEXA）扫描（％FM-DEXA）测量身体脂肪的总百分比（％FM）。将三个用于估计％FM（％FM-SF）的皮肤厚度预测方程与测量的％FM-DEXA进行了比较。结果：通过DEXA测得的男性和女性平均体脂百分比分别为36.6％（SD 6.8）和39.0％（SD 4.2）。 ％FM-DEXA中存在明显的性别差异（p = 0.05）。 Durnin＆Rahaman方程（％FM-DR-SF）最能预测女孩的％FM，％FM-DEXA-DR-SF的平均差为0.76％（SD 4.0），但高估了男孩的％FM，平均差为-1.01％（SD 5.7）。 Lohman方程是估计男孩中％FM的最佳方法。男生和女生的％FM-DEXA-L-SF的平均差异分别为-0.94％（SD 5.62）和-2.58％（SD 4.5）。 DEXA记录的性别差异仅由Lohman方程证明。屠杀方程式高估了男女的％FM。男孩的平均差异％FM-DEXA-Sla-SF为-8.1％（标准差8.6％），女孩为-5.2％（标准差5.28％）。导出了一个新的预测方程供本地使用。结论：现有的方程式在估计肥胖中国儿童体内脂肪百分比方面不准确。得出了基于皮褶厚度的特定方程式，用于估计肥胖中国儿童的％FM。

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