Mayhew Jerry L, Jacques Jeff A, Ware John S, Chapman Paul P, Bemben Michael G, Ward Tom E, Slovak Joseph P
Human Performance Laboratory, Truman State University, Kirksville, Missouri 63501, USA.
J Strength Cond Res. 2004 Aug;18(3):572-8. doi: 10.1519/1533-4287(2004)18<572:ADDNEO>2.0.CO;2.
The purpose of this study was to evaluate the contribution of anthropometric dimensions to improving the accuracy of repetitions-to-fatigue (RTF) using an absolute load of 225 lbs to predict 1 repetition maximum (1RM) bench press performance in college football players. Sixty-one players from an NCAA Division II team were evaluated for 1RM bench press performance, RTF using an absolute load of 225 lbs, and measured (5 skinfolds, 2 skeletal length, and 2 muscle circumferences). Anthropometric dimensions (percent fat, lean body mass, and arm cross-sectional areas) were derived at the conclusion of 8 weeks of heavy resistance training during the off-season. None of the anthropometric dimensions made a significant additional contribution to RTF (r = 0.96, SEE = 12.3 lbs) for predicting 1RM. Of the currently available NFL-225 prediction equations found in the literature nonsignificantly underestimated 1RM from RTF by an average of 1.1 lbs (+/-12.7 lbs), whereas 5 other RTF equations significantly overpredicted by 3.5-9.0 lbs (+/-12.2-14.1 lbs). Anthropometric dimensions neither reduced the error associated with prediction of 1RM bench press using the NFL-225 test in college football players nor do they explain why some players are significantly over- or underpredicted when using muscle endurance repetitions.
本研究的目的是评估人体测量维度对提高重复至疲劳次数（RTF）准确性的贡献，使用225磅的绝对负荷来预测大学橄榄球运动员的1次最大重复量（1RM）卧推表现。对来自一所美国国家大学体育协会（NCAA）二级联赛球队的61名运动员进行了1RM卧推表现评估、使用225磅绝对负荷的RTF评估，并测量了（5处皮褶厚度、2处骨骼长度和2处肌肉周长）。在休赛期进行8周的大重量抗阻训练结束时得出人体测量维度（体脂百分比、瘦体重和手臂横截面积）。对于预测1RM，人体测量维度对RTF均未做出显著的额外贡献（r = 0.96，估计标准误差SEE = 12.3磅）。在文献中找到的当前可用的NFL - 225预测方程非显著低估了RTF得出的1RM，平均低估1.1磅（±12.7磅），而其他5个RTF方程则显著高估了3.5 - 9.0磅（±12.2 - 14.1磅）。人体测量维度既没有减少大学橄榄球运动员使用NFL - 225测试预测1RM卧推时的相关误差，也没有解释为什么在使用肌肉耐力重复次数时，有些运动员被显著高估或低估。
