Percent body fat equations for the United States Population

美国人口体脂百分比方程

基本信息

批准号：
8785679
负责人：
JUNE STEVENS
金额：
$ 32.38万
依托单位：
UNIV OF NORTH CAROLINA CHAPEL HILL
依托单位国家：
美国
项目类别：
财政年份：
2014
资助国家：
美国
起止时间：
2014-01-01 至 2016-12-31
项目状态：
已结题

项目摘要

DESCRIPTION (provided by applicant): This research takes advantage of the unique opportunity presented by the accurate measurement of percent body fat using Dual-emission X-ray absorptiometry (DXA) in the nationally representative 1999- 2004 National Health and Nutrition Examination Survey (NHANES). This will be the first study to use the 10 anthropometric, 2 bioelectric impedance (BIA) and demographic variables collected to produce equations that will enable investigators to calculate valid measurements of percent body fat in children and adults using variables that are feasible to collect in a wide range of field settings. Most previous equations developed to predict percent body fat using anthropometrics and BIA were calculated using smaller samples assembled by convenience and often very limited in race/ethnic and age diversity. Our specific aims are: Aim 1: Create and validate gender-specific equations for youth and adults to estimate percent body fat in a diverse, nationally representative sample. Aim 2: Generate equations with successively smaller numbers of variables than the optimal equations. These equations will anticipate the needs of researchers who have available or have the opportunity to collect only a limited number of variables. Aim 3: Generate equations that exclude either the two BIA variables or the two skinfold variables. Since performance of BIA and collection of skinfolds are more costly in terms of equipment and training than other measures, we will provide equations from which they are excluded. Aim 4: Disseminate the developed percent body fat equations through publications and a website and application software (app) that makes them readily available and easily useful to researchers, clinicians and the public. This work uses a well-qualified team of investigators to leverage the value of extant data from NHANES to produce percent body fat equations that are generalizable to American children and adults.

描述（由申请人提供）：这项研究利用了使用双发射X射线吸收仪（DXA）在1999年 - 2004年2004年国家健康和营养检查调查（NHANES）中精确测量体内脂肪百分比的独特机会。这将是第一项使用10种人体测量学，2种生物电阻抗（BIA）和收集的人口统计学变量来产生方程式的研究，这些方程将使研究人员能够使用可行的变量来计算儿童和成年人中身体脂肪百分比的有效测量，这些变量可用于在广泛的现场设置中收集。大多数以前开发的方程是使用拟人化和BIA来预测体内脂肪百分比的大多数方程，该方程是使用便利性组装的较小样品计算的，并且在种族/种族和年龄多样性方面通常非常有限。我们的具体目的是：目标1：为青年和成年人创建和验证特定性别方程式，以估计各种代表性的样本中的体内脂肪百分比。 AIM 2：与最佳方程相比，生成具有较少变量数量的方程式。这些方程式将预测有可能或有机会收集有限数量变量的研究人员的需求。 AIM 3：生成排除两个BIA变量或两个皮肤变量的方程式。由于BIA的性能和皮肤折叠的收集在设备和培训方面比其他措施更为昂贵，因此我们将提供排除在外的方程式。 AIM 4：通过出版物以及网站和应用程序软件（APP）传播开发百分比的身体脂肪方程，该软件使它们容易获得，并且容易对研究人员，临床医生和公众有用。这项工作使用合格的调查人员团队来利用NHANES的现有数据价值产生可推广到美国儿童和成人的体内脂肪方程式。