PDF(Pubmed)
Abstract：
The purpose of this study was to investigate whether the ballistic push-up (BPU) is responsive to post-activation performance enhancement (PAPE) after a bench press conditioning exercise using velocity-based repetition control. Additionally, we aimed to evaluate the effects of range of motion (ROM) conditions on subsequent BPU performance. In a randomized crossover design, 18 males performed two conditions (full ROM and self-selected partial ROM) of bench press at 80% of their 1RM until mean concentric velocity dropped 10%. Each participant performed two pre- and six post-test BPUs to assess the PAPE effect. Paired sample t-tests assessed bench press performance measures. Multiple two-way repeated measures ANOVAs assessed differences in flight time, impulse, and peak power for the pre- and post-test BPUs. No significant differences existed between ROM conditions for total repetitions, volume load, or peak velocity. Compared to partial ROM, full ROM showed greater displacement (0.42 ± 0.05 vs. 0.34 ± 0.05 m), work (331.99 ± 67.72 vs. 270.92 ± 61.42 J), and mean velocity (0.46 ± 0.09 vs. 0.44 ± 0.08 m/s). Neither bench press ROM condition enhanced the BPU and were detrimental in some cases. Several time points showed partial ROM (flight time: 2 min post, impulse: 12 min post, peak power: 12 min post) significantly greater than full ROM, possibly indicating less fatigue accumulation. The BPU may require a different stimulus or may not be practical for PAPE effects in college-aged males. Partial ROM can be an alternative that achieves similar peak velocities while requiring less overall work.
摘要：
这项研究的目的是调查弹道俯卧撑（BPU）是否响应激活后性能增强（PAPE）使用基于速度的重复控制进行卧床调节练习。此外,我们旨在评估运动范围（ROM）条件对后续BPU性能的影响。在随机交叉设计中，18名男性在1RM的80％下进行了台式压力机的两种条件（全ROM和自选部分ROM），直到平均同心速度下降10％。每个参与者执行两个前和六个测试后BPU以评估PAPE效果。配对样品t检验评估了台式压力机性能测量。多个双向重复测量ANOVA评估飞行时间的差异，冲动，以及测试前和测试后BPU的峰值功率。总重复的ROM条件之间没有显着差异，体积载荷,或峰值速度。与部分ROM相比，完整的ROM显示更大的位移(0.42±0.05vs.0.34±0.05m)，工作(331.99±67.72vs.270.92±61.42J),和平均速度(0.46±0.09vs.0.44±0.08m/s)。两种台式压力机ROM条件都不能增强BPU，并且在某些情况下是有害的。几个时间点显示部分ROM（飞行时间：2分钟后，冲动：12分钟后，峰值功率：12分钟后）明显大于全ROM，可能表明疲劳积累较少。BPU可能需要不同的刺激，或者对于大学男性的PAPE效果可能不实用。部分ROM可以是实现类似的峰值速度同时需要较少的整体工作的替代方案。
