Accuracy of near-infrared interactance instruments and population-specific equations for estimating body composition in young wrestlers.
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.
Department of Health and Human Performance, University of Nebraska-Lincoln, 68583, USA. thoush@unlserve.unl.edu
Terry J
TJ
Housh
Glen O
GO
Johnson
Dona J
DJ
Housh
Joel T
JT
Cramer
Joan M
JM
Eckerson
Jeffrey R
JR
Stout
Anthony J
AJ
Bull
Sharon R
SR
Rana
D000293:Adolescent; D001823:Body Composition; D049628:Body Size; D002648:Child; D006801:Humans; D008297:Male; D011237:Predictive Value of Tests; D019265:Spectroscopy, Near-Infrared / Q000295:instrumentation*; D013178:Sports Medicine / Q000295:instrumentation*; D014952:Wrestling