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The Wisconsin Wrestling Minimal Weight Project: Cross-Validation of Prediction Equations
R Randall Clark1, Jacqueline M Kuta1, Robert A Oppliger2
1U.W. Hospital Sports Medicine Center, University of Wisconsin, Madison, WI 53705.
Abstract:
Wisconsin has mandated minimal weight (MW) testing for high school wrestlers. In preparation, six MW predictions were cross-validated on 69 Wisconsin wrestlers (age 15.7±1.1 yrs, height 169.2±6.3 cm, weight 63.3±8.1 kg, percent fat 11.2±4.7%, and MW 58.9±6.9 kg). Minimal weight, defined as fat-free body/.93, determined by hydrostatic weighing (HW) and residual volume using 0₂ dilution, served as the criterion. Analyzed using repeated-measures ANOVA, statistically significant but clinically small (<1.3 kg) differences were shown in four of six predictions. Lohman 1, Lohman2, and Katch equations appear more appropriate with smaller mean differences, smaller total error, and higher correlations.
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