Body composition estimates from NHANES III bioelectrical impedance data
Body composition estimates from NHANES III bioelectrical impedance data
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DOI：
10.1038/sj.ijo.0802167
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发表时间：
2002-12-01
影响因子：
4.9
通讯作者：
Hubbard, VS
中科院分区：
文献类型：
--
作者：
Chumlea, WC;Guo, SS;Hubbard, VS
背景：美国人口的身体成分估算对于分析肥胖、肌肉减少症和其他与体重相关的健康状况的趋势非常重要。以前无法获得全国身体成分估计值。 目的：在性别特异性、多成分模型衍生的预测公式中使用转化生物电阻抗分析 (BIA) 数据，使用美国人口的全国代表性样本来估计体内水分总量 (TBW)、去脂质量 (FFM)、全身脂肪 (TBF) 和体脂百分比 (%BF)。 设计：人体测量和 BIA 数据来自第三次国家健康和营养检查调查 (NHANES III; 1988-1994）。为本研究开发的性别特异性 BIA 预测方程应用于 NHANES 数据，并对选定的年龄、性别和种族民族群体估计 TBW、FFM、TBF 和 %BF 的平均值。 结果：在 NHANES III 中检查的 12 - 80 岁非西班牙裔白人、非西班牙裔黑人和墨西哥裔美国人参与者中，有 15 912 人拥有体重、身高和 BIA 抵抗力测量数据。无论年龄或种族状况如何，男性的平均 TBW 和 FFM 均高于女性。平均 TBW 和 FFM 从青少年时期到成年中期增加，而在老年年龄组中下降。在每个年龄组中，女性的平均 TBF 和 %BF 估计值均高于男性。平均 TBF 也随着年龄较大组的增加而增加，到大约 60 岁后下降。结论：这些基于 NHANES III BIA 数据的 TBW、FFM、TBF 和 %BF 的平均身体成分估计值为美国人口中的非西班牙裔白人、非西班牙裔黑人和墨西哥裔美国人提供了描述性参考。
BACKGROUND: Body composition estimates for the US population are important in order to analyze trends in obesity, sarcopenia and other weight-related health conditions. National body composition estimates have not previously been available.OBJECTIVE: To use transformed bioelectrical impedance analysis (BIA) data in sex-specific, multicomponent model-derived prediction formulae, to estimate total body water (TBW), fat-free mass (FFM), total body fat (TBF), and percentage body fat (%BF) using a nationally representative sample of the US population.DESIGN: Anthropometric and BIA data were from the third National Health and Nutrition Examination Survey (NHANES III; 1988-1994). Sex-specific BIA prediction equations developed for this study were applied to the NHANES data, and mean values for TBW, FFM, TBF and %BF were estimated for selected age, sex and racial-ethnic groups.RESULTS: Among the non-Hispanic white, non-Hispanic black, and Mexican-American participants aged 12 - 80 y examined in NHANES III, 15 912 had data available for weight, stature and BIA resistance measures. Males had higher mean TBW and FFM than did females, regardless of age or racial-ethnic status. Mean TBW and FFM increased from the adolescent years to mid-adulthood and declined in older adult age groups. Females had higher mean TBF and %BF estimates than males at each age group. Mean TBF also increased with older age groups to approximately 60y of age after which it decreased.CONCLUSIONS: These mean body composition estimates for TBW, FFM, TBF and %BF based upon NHANES III BIA data provide a descriptive reference for non-Hispanic whites, non-Hispanic blacks and Mexican Americans in the US population.