1496例儿童体块指数和皮褶厚度的临床研究

Body mass index and skinfolds in 1496 children

目的 研究儿童体块指数（BMI）、 皮褶厚度（SF）与相对体重（RW）、臂围（AG）及年龄之间的关系，找出适用于儿童肥胖症临床诊断的指标。方法 测定1496名1～13 a体健儿童的身高、体重、AG、三头肌皮褶(TSF)、肩胛下皮褶(SSF)、腹部皮褶(ASF)，分析儿童BMI、SF与RW、AG及年龄之间的关系。结果 1.BMI与三处SF之和（SF3）、RW、AG之间的相关系数＞0.8（P＜0.001）。2.随年龄增长，AG、ASF增加，TSF、BMI下降。3.3～6 a、12 a女孩SF厚于男孩，8、9 a男孩BMI高于女孩。结论 1.BMI和SF3第95百分位作为诊断儿童肥胖症的指标优于单用RW或一处SF。2.AG、腹部脂肪随年龄增加，但三头肌和全身脂肪相对减少。3.女孩的脂肪发育速度快于男孩。

Objective To investigate the relation between body mass index(BMI),skinfolds(SF)and relative weight(RW),arm girth(AG) and ag e of the children in order to look for the most suitable index used to diagnose children obesity in clinical work.Methods In 1496 healthy children (ranging from 1 to 13 years),their weight, height,AG, triceps skinfold(TSF), sub scapular skinfold(SSF) and abdominal skinfold(ASF) were measured and the relat ion of BMI,SF,RW,AG and age was analyzed.Results 1.Between BMI and the sum of three skinfolds(SF3) ,RW,AG,correlation coefficient was more t han 0.8(P＜0.001).2. With the increase of age, AG and ASF increase wh ile TSF and BMI decrease. 3.Skinfolds in girls of 3～6,12 years of age are thicker t han those in boys;BMI in boys of 8,9 years of age are higher than those in girls .Conc lusions 1.95 percentile of BMI and SF3 as index to diagnose children obes ity is better than single application of RW or one-site skinfold. 2. With the i ncrease of age, AG and abdominal fat increase, but triceps and total fat of body relatively decrease. 3. Fats in girls develop faster than in boys.