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  • Title: Accuracy of near-infrared interactance instruments and population-specific equations for estimating body composition in young wrestlers.
    Author: Housh TJ, Johnson GO, Housh DJ, Cramer JT, Eckerson JM, Stout JR, Bull AJ, Rana SR.
    Journal: J Strength Cond Res; 2004 Aug; 18(3):556-60. PubMed ID: 15320659.
    Abstract:
    The purpose of this investigation was to determine the accuracy of near-infrared interactance (NIR) instruments and population-specific NIR equations for estimating percent body fat (% fat) in young wrestlers. Forty-four white male youth wrestlers (mean age +/- SD = 11.0 +/- 2.1 years) volunteered for this study. Thirteen NIR % fat estimates were cross-validated against the criterion % fat from underwater weighing. The results of this study indicated that the total error (TE) values associated with the NIR instrument generated % fat estimates as well as % fat estimates from population-specific NIR equations developed for high school wrestlers or adult men were too large (TE = 5.7-27.3% fat) to be used with young wrestlers. Based on the present findings, it is recommended that new NIR equations be developed and validated specifically for use in young male athletes.
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