Lockie Robert G, Callaghan Samuel J, Moreno Matthew R, Risso Fabrice G, Liu Tricia M, Stage Alyssa A, Birmingham-Babauta Samantha A, Stokes John J, Giuliano Dominic V, Lazar Adrina, Davis DeShaun L, Orjalo Ashley J
Department of Kinesiology, California State University, Fullerton, Fullerton, USA.
Centre for Exercise and Sport Science, School of Exercise and Health Sciences, Edith Cowan University, Joondalup, Australia.
J Hum Kinet. 2017 Dec 28;60:19-28. doi: 10.1515/hukin-2017-0109. eCollection 2017 Dec.
The study aim was to determine relationships between mechanical variables in the one-repetition maximum (1RM) traditional bench press (TBP) and close-grip bench press (CGBP). Twenty resistance-trained men completed a TBP and CGBP 1RM. The TBP was performed with the preferred grip; the CGBP with a grip width of 95% biacromial distance. A linear position transducer measured: lift distance and duration; work; and peak and mean power, velocity, and force. Paired samples t-tests (p < 0.05) compared the 1RM and mechanical variables for the TBP and CGBP; effect sizes (d) were also calculated. Pearson's correlations (r; p < 0.05) computed relationships between the TBP and CGBP. 1RM, lift duration, and mean force were greater in the TBP (d = 0.30-3.20). Peak power and velocity was greater for the CGBP (d = 0.50-1.29). The 1RM TBP correlated with CGBP 1RM, power, and force (r = 0.685-0.982). TBP work correlated with CGBP 1RM, lift distance, power, force, and work (r = 0.542-0.931). TBP power correlated with CGBP 1RM, power, force, velocity, and work (r = 0.484-0.704). TBP peak and mean force related to CGBP 1RM, power, and force (r = 0.596-0.980). Due to relationships between the load, work, power, and force for the TBP and CGBP, the CGBP could provide similar strength adaptations to the TBP with long-term use. The velocity profile for the CGBP was different to that of the TBP. The CGBP could be used specifically to improve high-velocity, upper-body pushing movements.
本研究旨在确定传统卧推（TBP）和窄握卧推（CGBP）的一次重复最大值（1RM）中的力学变量之间的关系。20名经过抗阻训练的男性完成了TBP和CGBP的1RM测试。TBP采用首选握距进行；CGBP的握距为肩峰间距离的95%。使用线性位置传感器测量：举起距离和持续时间、功以及峰值和平均功率、速度和力量。配对样本t检验（p<0.05）比较了TBP和CGBP的1RM和力学变量；还计算了效应大小（d）。Pearson相关性分析（r；p<0.05）计算了TBP和CGBP之间的关系。TBP的1RM、举起持续时间和平均力量更大（d=0.30 - 3.20）。CGBP的峰值功率和速度更大（d=0.50 - 1.29）。TBP的1RM与CGBP的1RM、功率和力量相关（r=0.685 - 0.982）。TBP的功与CGBP的1RM、举起距离、功率、力量和功相关（r=0.542 - 0.931）。TBP的功率与CGBP的1RM、功率、力量、速度和功相关（r=0.484 - 0.704）。TBP的峰值和平均力量与CGBP的1RM、功率和力量相关（r=0.596 - 0.980）。由于TBP和CGBP在负荷、功、功率和力量之间的关系，长期使用CGBP可能会提供与TBP相似的力量适应性。CGBP的速度曲线与TBP不同。CGBP可专门用于改善高速的上半身推举动作。
