Trowbridge F L, Marks J S, Lopez de Romana G, Madrid S, Boutton T W, Klein P D
Am J Clin Nutr. 1987 Sep;46(3):411-8. doi: 10.1093/ajcn/46.3.411.
In some child populations, low height-for-age, suggesting chronic undernutrition, may paradoxically be accompanied by relatively high weight-for-height, suggesting obesity. This growth pattern was investigated with anthropometric assessment and body composition studies using H2(18)O stable isotope dilution in 139 preschool-age Peruvian children. Results suggested low height-for-age (15th percentile National Center for Health Statistics [NCHS]) and high weight-for-height (60th percentile NCHS). Skinfold thicknesses were lower whereas arm muscle areas were more similar to NCHS reference values. Total body water (as percent body weight) was greater than reference values, consistent with lower body fat. Differences in body proportions did not account adequately for the high weight-for-height. The data suggest that the high weight-for-height in these children is not obesity but is associated with lower body fat and greater lean tissue or lean tissue hydration that may reflect dietary, environmental, or genetic influences. Weight-for-height cutoffs for wasting or obesity may require different interpretations for different populations.
在一些儿童群体中，年龄别身高较低表明存在慢性营养不良，而与之矛盾的是，身高别体重相对较高则表明存在肥胖。在139名秘鲁学龄前儿童中，采用人体测量评估和使用H2(18)O稳定同位素稀释法进行的身体成分研究，对这种生长模式进行了调查。结果显示年龄别身高较低（处于美国国家卫生统计中心 [NCHS] 第15百分位数），而身高别体重较高（处于NCHS第60百分位数）。皮褶厚度较低，而手臂肌肉面积更接近NCHS参考值。总体水（占体重百分比）高于参考值，这与较低的体脂一致。身体比例的差异并不能充分解释身高别体重较高的情况。数据表明，这些儿童身高别体重较高并非肥胖，而是与较低的体脂以及更多的瘦组织或瘦组织水合作用有关，这可能反映了饮食、环境或遗传影响。消瘦或肥胖的身高别体重临界值可能需要针对不同人群进行不同解释。
