Predictive Accuracy of Omron® Body Logic Analyzer in Estimating Relative Body Fat of Adults

in International Journal of Sport Nutrition and Exercise Metabolism
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This study assessed the predictive accuracy of a new hand-held, segmental, bioimpedance (BI) analyzer in estimating the relative body fat (%BF) of a sample of 25 men and 23 women (18–55 years, 7.0 to 42.8%BFHW). The reference method was hydrostatic weighing (HW) at residual lung volume. The %BF estimates obtained from manufacturer’s (Omron) gender-specific equations were cross-validated. There were high validity coefficients (ry,y=.91 and .83, for men and women, respectively), moderate prediction errors (SEE = 3.46%, E = 3.64%BF for men; SEE = 4.04%, E = 3.87%BF for women), and no significant difference (p >.05) between the average %BFHW and %BFOmron for women (21.8% vs. 2I.6%BF, respectively). For men, there was a small but significant (p < .05) difference in %BFHW (18.7%) and %BFOmron (20.1 %). For both men and women, the line of identity did not differ significantly (p > .05) from the line of best fit. The Omron® BI equations accurately estimated the %BF of 72% of the men and 65% of the women in this sample within ±3.5%BF. Therefore, use of the Omron® BI analyzer is suitable for assessing the %BF of adults having demographic characteristics similar to those of this sample.

The authors are with the Center for Exercise and Applied Human Physiology at the University of New Mexico, Albuquerque, NM 87131.

International Journal of Sport Nutrition and Exercise Metabolism
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