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Evaluation of Body Composition Methods for Accuracy

机译：身体成分评估方法的准确性

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摘要

The objective of this study was to evaluate the accuracy of a variety of portable methods and instruments used to estimate body composition or percentage body fat (%BF) in a systematic, comprehensive manner on a wide range of subjects. The %BF was estimated using four skinfold protocols, three girth measurement protocols, two bioelectric impedance analysis (BIA) instruments, and one near-infrared instrument on 121 subjects. The subjects ranged in age from 21 to 51 years; weight ranged from 105 to 226 pounds and %BF from 8.3% to 38.3%; and the group was 29% male. The %BF estimates were compared to the values obtained from the generally accepted reference standard, underwater weighing (UWW). The correlation coefficients (r) between the test methods and UWW ranged from 0.48 to 0.72. Regression analysis resulted in a range of slopes from 0.48 to 0.93, y-intercept range from 3.8 to 13.1, and standard error of the estimate range from 3.8 to 7.5. All of the methods tended to overestimate lower and underestimate higher %BF. With two exceptions, all methods appeared more accurate for males than females. In general, the near-infrared appeared least and BIA appeared most accurate. In conclusion, in our opinion, most of the methods were not sufficiently accurate to use on a wide range of individuals. Although they may be sufficiently accurate on the narrow sample of subjects on which they were developed, they may not be as accurate for the general population.
机译：这项研究的目的是评估各种便携式方法和仪器的准确性，这些方法和仪器可用于以系统，全面的方式评估各种受试者的身体成分或体内脂肪百分比（％BF）。使用四种皮褶方案，三种周长测量方案，两种生物电阻抗分析（BIA）仪器和一种近红外仪器对121位受试者进行了％BF估计。受试者的年龄从21岁到51岁不等。重量为105到226磅，％BF为8.3％到38.3％；男性为29％。将％BF估计值与从普遍接受的参考标准水下称量（UWW）获得的值进行比较。测试方法与UWW之间的相关系数（r）为0.48至0.72。回归分析得出的斜率范围为0.48至0.93，y截距范围为3.8至13.1，估计的标准误范围为3.8至7.5。所有这些方法都倾向于高估较低的BF，而低估较高的BF。除了两个例外，所有方法对男性而言似乎都比对女性更准确。通常，近红外出现最少，而BIA出现最准确。总之，我们认为，大多数方法不够准确，无法在广泛的个人上使用。尽管它们在开发它们的狭窄受试者样本上可能足够准确，但对于一般人群来说可能不那么准确。

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  • 来源
    《Biomedical Instrumentation & Technology》 |2005年第5期|397-405|共9页
  • 作者

    John A. Danie; P; Ed; Phil S. Sizer J; P; Ph; OC; FAAOMP; Neal S. Latma; PhD;

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    From the Department of Rehabilitation Sciences, School of Allied Health Sciences, Lubbock, TX (JAD, PSS) and West Texas A & M University, Canyon, TX (NSL);

    From the Department of Rehabilitation Sciences, School of Allied Health Sciences, Lubbock, TX (JAD, PSS) and West Texas A & M University, Canyon, TX (NSL);

    From the Department of Rehabilitation Sciences, School of Allied Health Sciences, Lubbock, TX (JAD, PSS) and West Texas A & M University, Canyon, TX (NSL);

    From the Department of Rehabilitation Sciences, School of Allied Health Sciences, Lubbock, TX (JAD, PSS) and West Texas A & M University, Canyon, TX (NSL);

    From the Department of Rehabilitation Sciences, School of Allied Health Sciences, Lubbock, TX (JAD, PSS) and West Texas A & M University, Canyon, TX (NSL);

    From the Department of Rehabilitation Sciences, School of Allied Health Sciences, Lubbock, TX (JAD, PSS) and West Texas A & M University, Canyon, TX (NSL);

    From the Department of Rehabilitation Sciences, School of Allied Health Sciences, Lubbock, TX (JAD, PSS) and West Texas A & M University, Canyon, TX (NSL);

    From the Department of Rehabilitation Sciences, School of Allied Health Sciences, Lubbock, TX (JAD, PSS) and West Texas A & M University, Canyon, TX (NSL);

    From the Department of Rehabilitation Sciences, School of Allied Health Sciences, Lubbock, TX (JAD, PSS) and West Texas A & M University, Canyon, TX (NSL);

    From the Department of Rehabilitation Sciences, School of Allied Health Sciences, Lubbock, TX (JAD, PSS) and West Texas A & M University, Canyon, TX (NSL);

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