澳大利亚男孩和女孩国际肥胖分类的不一致性——LOOK研究

Discordance of international adiposity classifications in Australian boys and girls - the LOOK study.

作者信息

Telford Richard D, Cunningham Ross B, Daly Robin M, Reynolds Graham J, Lafferty Antony R A, Gravenmaker Karen J, Budge Marc M, Javaid Ahmad, Bass Shona L, Telford Rohan M

机构信息

Faculty of Medicine, Australian National University, Canberra, ACT, Australia.

出版信息

Ann Hum Biol. 2008 May-Jun;35(3):334-41. doi: 10.1080/03014460802014625.

DOI:10.1080/03014460802014625

PMID:18568596

Abstract

BACKGROUND

Various charts based on body mass index (BMI) and per cent body fat (%BF) are used to classify childhood body composition but outcomes may vary.

AIM

The study investigated variation in incidences of childhood obesity as depicted by four classification charts.

SUBJECTS AND METHODS

BMI and DXA-derived %BF were assessed in 741 children. Incidences of overweight and obesity were compared between two BMI charts and two bioelectrical impedance (BIA)-based %BF charts.

RESULTS

The International Obesity Task Force (IOTF)-adopted BMI chart designated 21%, 6% (boys), and 26%, 9% (girls) as overweight and obese, respectively. Corresponding figures using the USA CDC BMI chart were 27%, 11% (boys) and 27%, 12% (girls). Using a USA-derived %BF chart incidences were 17%, 2% (boys) and 21%, 8% (girls) and using a UK-derived %BF chart 51%, 24% (boys) and 53%, 36% (girls). Sensitivity of BMI varied according to the %BF reference chart.

CONCLUSIONS

In contrast to the BMI-based charts, there were considerable variations in depicted incidences of obesity between the %BF-based charts. These discordances were considered to result from previously reported variation within and between BIA and DXA %BF assessments underlying the charts. The present study highlights the need for valid, reliable, unchanging BIA and DXA procedures.

摘要

背景

基于体重指数（BMI）和体脂百分比（%BF）的各种图表被用于对儿童身体成分进行分类，但结果可能有所不同。

目的

本研究调查了四种分类图表所描绘的儿童肥胖发生率的差异。

对象与方法

对741名儿童进行了BMI和双能X线吸收法（DXA）测定的%BF评估。比较了两种BMI图表和两种基于生物电阻抗（BIA）的%BF图表之间超重和肥胖的发生率。

结果

国际肥胖特别工作组（IOTF）采用的BMI图表将超重和肥胖的比例分别定为21%、6%（男孩）以及26%、9%（女孩）。使用美国疾病控制与预防中心（CDC）的BMI图表，相应比例为27%、11%（男孩）和27%、12%（女孩）。使用源自美国的%BF图表，发生率为17%、2%（男孩）和21%、8%（女孩），而使用源自英国的%BF图表，发生率为51%、24%（男孩）和53%、36%（女孩）。BMI的敏感性根据%BF参考图表而有所不同。