Abstract: Objective To understand the development pattern of skinfold thickness and its correlations with body weight,chest circumference and upper arm circumference of infants aged 0 to 12 months in Daxing district,Beijing,in order to provide reference for infants health care. Methods A total of 465 infants admitted to the child health care clinic were enrolled in this study from January 2017 to August 2018,and were divided into 5 groups by age.Their body weight,chest circumference,upper arm circumference and the thickness of the pleats at four parts were measured,including biceps brachii,triceps brachii,inferior angle of scapula and anterior superior iliac spine. Results The average body weight,upper arm circumference and the thickness of skinfolds at all age groups were significantly higher than those recommended by WHO in 2006 for children with the same sex and age.The increase of chest circumference in all age groups was greater than that of head circumference,the upper arm circumference increased rapidly within 0 to 12 months,and reached to the peak at 9 months.The development trend of skinfold thickness of male and female infants was consistent.The difference on skinfold thickness of triceps humerus between male and female infants aged 12 months was statistically significant (P<0.05),while the differences were not significant between different genders among other age groups (P＞0.05).The thickness of the pleats at the four parts had a significant effect on the weight and chest circumference of the male infants,of which the anterior superior iliac spine,triceps brachii and inferior angle of scapula had significant effects on the circumference of the male upper arm.The anterior superior iliac spine,triceps humerus and inferior angle of scapula had significant effects on the body weight and chest circumference of the female infants,and triceps humerus had a significant effect on the arm circumference of the female. Conclusions The average thickness of skinfolds in infants aged 0 to 12 months are higher than the reference index recommended by WHO.Chest circumference and upper arm circumference develop rapidly,among which the cross time of chest circumference and head circumference is significantly earlier.It is indicated that infants are likely to have good or excessive nutrition,positive exploration for the influencing factors is needed,thereby improving nutritional status in early life.

Key words: infant, chestcircumference, upperarmcircumference, skinfold

摘要： 目的 了解大兴地区0~12月龄婴儿皮褶厚度发育现状,探讨皮褶厚度与体重、胸围、上臂围的相关性,为婴幼儿保健提供参考依据。方法 选择2017年1月-2018年8月在儿童保健门诊就诊的465例婴儿,按照年龄分为5组,测量体重、头围、胸围、上臂围以及四个部位的皮褶厚度,分别是肱二头肌、肱三头肌、肩胛下角、髂前上棘。结果 各年龄组体重、上臂围及各肱二头肌、肩胛下角皮褶厚度均值全部明显高于WHO2006年推荐儿童体格生长发育标准同性别同年龄组,胸围在各年龄组增长均大于头围,0~12月龄内上臂围增长迅速,9月龄到达峰值。男性、女性婴儿皮褶厚度发育趋势一致,12月龄组不同性别肱三头肌皮褶厚度差异具有统计学意义(P<0.05),其余同年龄不同性别婴幼儿皮褶厚度差异无统计学意义。四个部位皮褶厚度对男性婴儿体重及胸围均有显著影响;髂前上棘、肱三头肌和肩胛下角对男性上臂围有显著影响。髂前上棘、肱三头肌和肩胛下角对女性婴儿体重和胸围有显著影响,肱三头肌对女性上臂围有显著影响。结论 0~12月龄婴幼儿皮褶厚度均高于WHO推荐参考指标,胸围、上臂围发育迅速,其中胸围与头围交叉时间提前明显,提示婴儿营养水平良好或存在营养过剩可能,需要积极寻找影响因素进行干预,改善生命早期营养状况。

关键词: 婴幼儿, 胸围, 上臂围, 皮褶厚度