A comparison of bielectric impedance and hydrodensitometry in lean males
Journal of Strength and Conditioning Research
The purpose of this study was to compare the old and new RJL bioelectric impedance equations for determining percent body fat (%BF) to hydrodensitometry in a sample of lean male athletes and non-athletes. Subjects were 10 track athletes, 10 bodybuilders and 10 non-athletes. All subjects were under 12 percent body fat as determined by hydrodensitometry. In addition to hydrodensitometry, %BF was determined using bielectric impedance and old (BIA-1) and new (BIA-2) equations used in the manufacturer’s software. Results indicated that the new RJL equations significantly overestimated %BF compared to hydrodensitometry by three units of %BF in all groups. Results also indicated that the amount of overestimation was no different for the athletes compared to the non-athletes. It was concluded that although the amount of overestimation of %BF has been reduced by the new RJL equations compared to the old RJL equaitons, the new equation still significantly overestimated %BF in lean males. Organizations and athletic teams that use bioelectric impedance to determine %BF should be aware of the potential for overestimation in lean individuals and use bioelectric impedance results with caution. © 1992 Journal of Applied Sport Science Research. All rights reserved.
Original Publication Date
DOI of published version
Dolgener, Forrest A.; Hensley, Larry D.; Becker, Troy E.; and Marsh, Jeanette J., "A comparison of bielectric impedance and hydrodensitometry in lean males" (1992). Faculty Publications. 4505.