Comparison of methods of estimating body fat in normal subjects and cancer patients.
Comparison of methods of estimating body fat in normal subjects and cancer patients.
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正常人和癌症患者体脂估算方法的比较。
DOI：
10.1093/ajcn/34.12.2839
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发表时间：
1981
期刊：
影响因子：
--
通讯作者：
A. Vaswani
中科院分区：
文献类型：
--
作者：
S. Cohn;K. Ellis;D. Vartsky;A. Sawitsky;W. Gartenhaus;S. Yasumura;A. Vaswani
总体脂可通过以下非侵入性技术间接估算：通过测量体钾或体水来测定瘦体重，通过水下称重或皮褶测量来测定密度。中子活化法测量全身总氮提供了另一种估算瘦体重和体脂的技术。在瘦体重的两室模型中，氮的测量也可以与全身钾的测量相结合，由此可以推导出另一种体脂的估计。上述所有技术都有各种各样的错误，并且基于许多假设，其中一些假设是不完全有效的。这些技术被应用于一组正常受试者和一组癌症患者。每种方法的优点和缺点都是根据它们估计全身脂肪的能力来讨论的。
Total body fat can be indirectly estimated by the following noninvasive techniques: determination of lean body mass by measurement of body potassium or body water, and determination of density by underwater weighing or by skinfold measurements. The measurement of total body nitrogen by neutron activation provides another technique for estimating lean body mass and hence body fat. The nitrogen measurement can also be combined with the measurement of total body potassium in a two compartment model of the lean body mass from which another estimate of body fat can be derived. All of the above techniques are subject to various errors and are based on a number of assumptions, some of which are incompletely validated. These techniques were applied to a population of normal subjects and to a group of cancer patients. The advantages and disadvantages of each method are discussed in terms of their ability to estimate total body fat.