Reference ranges for midupper arm circumference, upper arm muscle area, and upper arm fat area in US children and adolescents aged 1-20 y
Reference ranges for midupper arm circumference, upper arm muscle area, and upper arm fat area in US children and adolescents aged 1-20 y
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DOI：
10.3945/ajcn.116.142190
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发表时间：
2017-01-01
影响因子：
7.1
通讯作者：
Zemel, Babette S.
中科院分区：
文献类型：
--
作者：
Addo, O. Yaw;Himes, John H.;Zemel, Babette S.
背景资料：中臂围（MUAC）长期以来一直被用于实地环境中营养状况的人体测量评估，特别是在紧急情况下，但目前还无法获得健康、营养良好儿童的百分位数范围。目的：我们开发了MUAC的参考曲线，并导出了手臂肌肉面积（AMA）和手臂脂肪面积（AFA）的测量值。设计：我们分析了来自32，952名1-20岁美国儿童的横断面MUAC和三头肌（三头肌皮褶厚度）数据。位置、尺度和形状的广义加性模型用于计算按年龄和性别进行z评分估计所需的半参数平滑曲线和L、M和S系数。方程的开发与使用的身高年龄z分数（HAZ）调整身高与上臂measures.Results的关联：MUAC随着年龄的增长稳步上升，在整个生长期。儿童
Background: Midupper arm circumference (MUAC) has long been used in anthropometric assessments of nutritional status in field settings, especially in emergency situations, but percentile ranges for healthy, well-nourished children are currently unavailable.Objective: We developed reference curves for MUAC and derived measures of arm muscle area (AMA) and arm fat area (AFA) on the basis of the population used in the current CDC body mass index growth charts.Design: We analyzed cross-sectional MUAC and triceps (triceps skinfold thickness) data from 32,952 US children aged 1-20 y. Generalized additive models for location, scale, and shape were used to calculate semiparametric smoothed percentiles and L, M, and S coefficients needed for z-score estimation by age and sex. Equations were developed with the use of the height-for-age z score (HAZ) to adjust for the associations of stature with upper arm measures.Results: MUAC increased with age steadily throughout the growing period. For children