Thorland W G, Tipton C M, Lohman T G, Bowers R W, Housh T J, Johnson G O, Kelly J M, Oppliger R A, Tcheng T K
Washington State University, Physical Education Department, Pullman, WA 99164-1410.
Med Sci Sports Exerc. 1991 Sep;23(9):1102-10.
This study determined the validity of previously published or newly derived equations to predict fat-free body mass (FFB) in high school wrestlers from the midwestern United States. Five laboratories participated in the data-pooling study (total sample of 860 subjects). Measures included body composition by underwater weighing and anthropometric measurements of body mass, stature, and selected circumferences, diameters, and skinfolds. Cross-validation of selected equations to predict FFB revealed the lowest levels of error from the equations of Lohman, Thorland et al., Katch and McArdle, and Behnke and Wilmore. Modification of the constants in these equations or generation of new equations did not substantially reduce prediction error. Overall, total error for these top equations ranged from 2.44 to 2.59 kg. However, based on observed trends, this error was of lower magnitude with the younger and lighter subjects and of higher magnitude with the older and heavier subjects. We conclude that these equations could be used singularly or collectively to determine FFB, and a minimal weight could then be derived and assigned to a scholastic wrestler.
本研究确定了先前发表的或新推导的方程用于预测美国中西部高中摔跤运动员瘦体重（FFB）的有效性。五个实验室参与了数据汇总研究（总样本量为860名受试者）。测量指标包括通过水下称重法测定的身体成分，以及对体重、身高、选定的周长、直径和皮褶厚度进行的人体测量。对选定的预测FFB的方程进行交叉验证发现，Lohman、Thorland等人、Katch和McArdle以及Behnke和Wilmore的方程误差最低。修改这些方程中的常数或生成新方程并不能显著降低预测误差。总体而言，这些顶级方程的总误差范围为2.44至2.59千克。然而，根据观察到的趋势，年轻且体重较轻的受试者误差较小，而年长且体重较重的受试者误差较大。我们得出结论，这些方程可单独或共同用于确定FFB，进而可为学校摔跤运动员得出并指定最低体重。
