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http://hdl.handle.net/2239/34891
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| Title: | Assessment of fat-free mass using bioelectrical impedance measurements of the human body. |
| Authors: | Lukaski, Henry C.
Johnson, Phyllis E.
Bolonchuk, William W.
Lykken, Glenn I. |
| Keywords: | body composition
analytical methods
nutritional status
impedance
body fat
potassium
electrolytes
men |
| Issue Date: | 17-Oct-2007 |
| Description: | Extract: A method which involves the measurement of bioelectrical resistive impedance (R) for the estimation of human body composition is described. This method is based upon the principle that the electrical conductivity of the fat-free tissue mass (FFM) is far greater than that of fat. Determinations of R were made in 37 healthy men aged 28.8 yr using an electrical impedance plethysmograph with a four electrode arrangement that introduces a painless signal into the body. FFM was assessed by hydrodensitometry and ranged from 44.6-98.1 kg. Total body water (TBW) determined by D2O dilution and total body potassium (TBK) from whole body counting were 50.6 L and 167.5 g, respectively. Test-retest correlation coefficient was 0.99 for a single R measurement and the reliability coefficient for a single R measurement over 5 days was 0.99. Linear relationships were found between R values and FFM, TBW, and TBK. These data indicate that the bioelectrical impedance technique is a reliable and valid approach for the estimation of human body composition. This method is safe, noninvasive, provides rapid measurements, requires little operator skill and subject cooperation, and is portable. Further validation of this method is recommended in subjects with abnormal body composition. (author) |
| URI: | http://seekspace.resip.ac.cn/handle/2239/34891 |
| Other Identifiers: | http://seekspace.resip.ac.cn/handle/10113/36 |
| Appears in Collections: | 网络开放学术资源
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