Oppliger R A, Nielsen D H, Vance C G
Physical Therapy Education, University of Iowa, Iowa City 52242.
Med Sci Sports Exerc. 1991 Feb;23(2):247-53.
The need for accurate assessment of minimal wrestling weight among interscholastic wrestlers has been well documented. Previous research has demonstrated the validity of anthropometric methods for this purpose, but little research has examined the validity of bioelectrical impedance (BIA) measurements. Comparisons between BIA systems has received limited attention. With these two objectives, we compared the prediction of minimal weight (MW) among 57 interscholastic wrestlers using three anthropometric methods (skinfolds (SF) and two skeletal dimensions equations) and three BIA systems (Berkeley Medical Research (BMR), RJL, and Valhalla (VAL]. All methods showed high correlations (r values greater than 0.92) with hydrostatic weighting (HW) and between methods (r values greater than 0.90). The standard errors of estimate (SEE) were relatively small for all methods, especially for SF and the three BIA systems (SEE less than 0.70 kg). The total errors of prediction (E) for RJL and VAL (E = 4.4 and 3.9 kg) were significantly larger than observed nonsignificant BMR and SF values (E = 2.3 and 1.8 kg, respectively). Significant mean differences were observed between HW, RJL, VAL, and the two skeletal dimensions equations, but nonsignificant differences were observed between HW, BMR, and SF. BMR differed significantly from the RJL and VAL systems. The results suggest that RJL and VAL have potential application for this subpopulation. Prediction equation refinement with the addition of selected anthropometric measurement or moderating variables may enhance their utility. However, within the scope of our study, SF and BMR BIA appear to be the most valid methods for determining MW in interscholastic wrestlers.
校际摔跤运动员中准确评估最低摔跤体重的必要性已有充分记录。先前的研究已经证明了人体测量方法在此目的上的有效性，但很少有研究检验生物电阻抗（BIA）测量的有效性。BIA系统之间的比较受到的关注有限。基于这两个目标，我们使用三种人体测量方法（皮褶厚度（SF）和两个骨骼尺寸方程）和三种BIA系统（伯克利医学研究（BMR）、RJL和瓦尔哈拉（VAL））比较了57名校际摔跤运动员的最低体重（MW）预测。所有方法与水下称重（HW）以及方法之间都显示出高度相关性（r值大于0.92）。所有方法的估计标准误差（SEE）相对较小，尤其是SF和三种BIA系统（SEE小于0.70千克）。RJL和VAL的预测总误差（E）（E = 4.4和3.9千克）显著大于观察到的无显著差异的BMR和SF值（分别为E = 2.3和1.8千克）。在HW、RJL、VAL和两个骨骼尺寸方程之间观察到显著的平均差异，但在HW、BMR和SF之间观察到无显著差异。BMR与RJL和VAL系统有显著差异。结果表明，RJL和VAL在此亚人群中有潜在应用。通过添加选定的人体测量指标或调节变量来完善预测方程可能会提高它们的效用。然而，在我们的研究范围内，SF和BMR BIA似乎是确定校际摔跤运动员MW最有效的方法。
