Waist circumference as a measure of trunk fat mass in children aged 3 to 5 years
Waist circumference as a measure of trunk fat mass in children aged 3 to 5 years
复制标题
DOI：
10.1080/17477160802030429
复制
发表时间：
2008-01-01
影响因子：
--
通讯作者：
Goulding, Ailsa
中科院分区：
文献类型：
--
作者：
Taylor, Rachael W.;Williams, Sheila M.;Goulding, Ailsa
目标。幼儿肥胖率的增加强调了对这个年龄段的总脂肪和局部脂肪进行准确测量的必要性。因此，本研究的目的是评估腰围、腰围/身高比(WHtR)和锥度指数(CI)区分躯干脂肪含量低和高的儿童的能力。方法：研究方法。用双能X线骨密度仪(DXA)测量了301名3~5岁高加索儿童(150名女孩)的躯干脂肪质量。通过构建受试者-操作特征(ROC)曲线和每条曲线下的面积(AUC)来比较腰围、WHtR和CI对儿童躯干脂肪含量低和高的相对识别能力。结果。女孩的躯干脂肪高于男孩(P0.001)。AUCS表明，腰围正确区分躯干脂肪质量低和高的儿童，87%(女孩)到90%(男孩)。腰围指标优于腰臀比(AUC：女生0.79，男生：0.81，P=0.164和P=0.011)和CI(女生：0.53，男生：0.65，P0.0001)。Z-Score 0.55能正确识别躯干脂肪含量高的79%的女孩和81%的男孩，以及躯干脂肪含量低的82%的女孩和84%的男孩。男女每半年的建议腰围截止值都有报道。结论。在学龄前儿童中，腰围可以很好地作为躯干脂肪含量较高的指标。
Objective. The increasing prevalence of obesity in young children emphasises the need for accurate measures of total and regional fat at this age. Thus the aim of this study was to evaluate the ability of waist circumference, waist-to-height ratio (WHtR) and the conicity index (CI) to discriminate between children with low and high levels of trunk fat mass. Methods. Trunk fat mass was measured by dual-energy x-ray absorptiometry (DXA) in 301 predominantly Caucasian children (150 girls) aged 3-5 years. High trunk fat was defined as an internal z-score of +1. Receiver-operating characteristic (ROC) curves and the areas under each curve (AUC) were constructed to compare the relative ability of waist circumference, WHtR and CI to identify children with low and high trunk fat mass. Results. Girls had more truncal fat than boys (P0.001). AUCs indicated that waist circumference correctly discriminated between children with low and high trunk fat mass 87% (for girls) to 90% (for boys) of the time. Waist circumference performed better than WHtR (AUCs: 0.79 in girls and 0.81 in boys; P=0.164 and P=0.011, respectively) and the CI (AUCs: 0.53 in girls and 0.65 in boys, P0.0001). A z-score of 0.55 correctly identified 79% of girls and 81% of boys with high trunk fat mass, and 82% of girls and 84% of boys with low trunk fat mass. Suggested waist circumference cut-offs for each half-year of age in both sexes are reported. Conclusion. Waist circumference performs reasonably well as an indicator of high trunk fat mass in preschool-aged children.