Lockie Robert G, Callaghan Samuel J, Orjalo Ashley J, Moreno Matthew R
Department of Kinesiology, California State University, Fullerton, CA 92831, USA.
School of Life Sciences, Pharmacy and Chemistry, Kingston University, Kingston upon Thames, KT1 1LQ, UK.
Sports (Basel). 2018 Sep 15;6(3):97. doi: 10.3390/sports6030097.
The close-grip bench press (CGBP) is a variation of the traditional bench press (TBP) that uses a narrower grip (~95% biacromial distance) and has application for athletes performing explosive arm actions where the hands are positioned close to the torso. Limited research has investigated CGBP peak power. Twenty-six strength-trained individuals completed a one-repetition maximum TBP and CGBP. During two other sessions, subjects completed two repetitions as explosively as possible with loads from 20% to 90% for each exercise, with peak power measured by a linear position transducer. A factorial ANOVA calculated between- and within-exercise differences in peak power. Partial correlations controlling for sex determined relationships between absolute and relative strength and peak power load. Peak power for the TBP occurred at 50% 1RM, and 30% 1RM for the CGBP. There were no significant ( = 0.680) differences between peak power at each load when comparing the TBP and CGBP. For the within-exercise analysis, there were generally no significant differences in TBP and CGBP peak power for the 20⁻50% 1RM loads. There were no significant relationships between strength and peak power load ( = 0.100⁻0.587). A peak power loading range of 20⁻50% 1RM for the TBP and CGBP is suggested for strength-trained individuals.
窄握卧推（CGBP）是传统卧推（TBP）的一种变体，它采用更窄的握距（约为肩峰间距离的95%），适用于双手靠近躯干进行爆发性手臂动作的运动员。对窄握卧推峰值功率的研究有限。26名经过力量训练的个体完成了一次最大重复次数的传统卧推和窄握卧推。在另外两次训练中，受试者以尽可能快的速度完成每个练习从20%到90%负荷的两次重复，峰值功率由线性位置传感器测量。通过析因方差分析计算练习间和练习内峰值功率的差异。控制性别后的偏相关分析确定绝对力量、相对力量与峰值功率负荷之间的关系。传统卧推的峰值功率出现在1RM的50%，窄握卧推的峰值功率出现在1RM的30%。比较传统卧推和窄握卧推时，各负荷下的峰值功率无显著差异（P = 0.680）。对于练习内分析，在1RM的20%至50%负荷下，传统卧推和窄握卧推的峰值功率通常无显著差异。力量与峰值功率负荷之间无显著关系（P = 0.100至0.587）。建议经过力量训练的个体，传统卧推和窄握卧推的峰值功率负荷范围为1RM的20%至50%。
