Loturco Irineu, Kobal Ronaldo, Moraes José E, Kitamura Katia, Cal Abad César C, Pereira Lucas A, Nakamura Fábio Y
1NAR-Nucleus of High Performance in Sport, São Paulo, Brazil;2Department of Mechatronics Engineering, University of São Paulo, São Paulo, Brazil;3CBRu-Brazilian Rugby Confederation, São Paulo, Brazil; and4State University of Londrina, Londrina, Paraná, Brazil.
J Strength Cond Res. 2017 Apr;31(4):1127-1131. doi: 10.1519/JSC.0000000000001670.
Loturco, I, Kobal, R, Moraes, JE, Kitamura, K, Cal Abad, CC, Pereira, LA, and Nakamura, FY. Predicting the maximum dynamic strength in bench press: the high precision of the bar velocity approach. J Strength Cond Res 31(4): 1127-1131, 2017-The aim of this study was to determine the force-velocity relationship and test the possibility of determining the 1 repetition maximum (1RM) in "free weight" and Smith machine bench presses. Thirty-six male top-level athletes from 3 different sports were submitted to a standardized 1RM bench press assessment (free weight or Smith machine, in randomized order), following standard procedures encompassing lifts performed at 40-100% of 1RM. The mean propulsive velocity (MPV) was measured in all attempts. A linear regression was performed to establish the relationships between bar velocities and 1RM percentages. The actual and predicted 1RM for each exercise were compared using a paired t-test. Although the Smith machine 1RM was higher (10% difference) than the free weight 1RM, in both cases the actual and predicted values did not differ. In addition, the linear relationship between MPV and percentage of 1RM (coefficient of determination ≥95%) allow determination of training intensity based on the bar velocity. The linear relationships between the MPVs and the relative percentages of 1RM throughout the entire range of loads enable coaches to use the MPV to accurately monitor their athletes on a daily basis and accurately determine their actual 1RM without the need to perform standard maximum dynamic strength assessments.
洛图尔科，I，科巴尔，R，莫赖斯，JE，北村，K，卡尔·阿瓦德，CC，佩雷拉，LA，以及中村，FY。卧推最大动态力量的预测：杠铃速度法的高精度。《力量与体能研究杂志》31(4)：1127 - 1131，2017年 - 本研究旨在确定力 - 速度关系，并测试在“自由重量”和史密斯机卧推中确定1次重复最大值（1RM）的可能性。36名来自3个不同运动项目的男性顶级运动员按照标准程序接受了标准化的1RM卧推评估（自由重量或史密斯机，随机顺序），该程序包括以1RM的40 - 100%进行的举重动作。在所有尝试中测量平均推进速度（MPV）。进行线性回归以建立杠铃速度与1RM百分比之间的关系。使用配对t检验比较每种练习的实际和预测1RM。尽管史密斯机的1RM高于自由重量的1RM（相差10%），但在两种情况下实际值和预测值并无差异。此外，MPV与1RM百分比之间的线性关系（决定系数≥95%）使得能够基于杠铃速度确定训练强度。在整个负荷范围内，MPV与1RM相对百分比之间的线性关系使教练能够每天使用MPV准确监测运动员，并准确确定他们的实际1RM，而无需进行标准的最大动态力量评估。
