Cui Weijia, Chen Yiming, Wang Dexin
School of Athletic Performance, Shanghai University of Sport, Shanghai, China.
School of Exercise and Health, Shanghai University of Sport, Shanghai, China.
Front Physiol. 2024 Oct 11;15:1429550. doi: 10.3389/fphys.2024.1429550. eCollection 2024.
This study was conducted in accordance with the principles of velocity-based training theory, with the objective of investigating the effects of post-activation potentiation (PAP) induced by different velocity loss (VL) thresholds (10% vs. 20%) on the punching ability of boxers. In addition, the aim was to determine the velocity loss thresholds and time nodes that produced the optimal activation effect. Twenty-four male elite boxers were randomly assigned to three groups: CON, 10 VL, and 20 VL. All subjects in the three groups underwent an activation intervention involving an 85% of the one-repetition maximum (1RM) squat, with 6-8 repetitions performed in the CON. The number of repetitions in the 20%VL and 10 VL was determined based on the velocity loss monitored by the GymAware PowerTool system. Four time points were selected for observation: the 4th, 8th, 12th and 16th minutes. These were chosen to test the subjects' punching ability. The results demonstrated that activation training at different VL induced a post-activation potentiation in boxers, improving punching ability bilaterally and to a greater extent than in the CON. The dominant side demonstrated the greatest efficacy at the 12th minute under the 20% velocity loss threshold, while the non-dominant side exhibited the greatest efficacy at the 8th minute under the 10% velocity loss threshold.
本研究依据基于速度的训练理论原则开展，旨在探究不同速度损失（VL）阈值（10%与20%）诱发的激活后增强效应（PAP）对拳击运动员出拳能力的影响。此外，目的是确定产生最佳激活效果的速度损失阈值和时间节点。24名男性精英拳击运动员被随机分为三组：对照组（CON）、10%速度损失组（10 VL）和20%速度损失组（20 VL）。三组中的所有受试者均接受了一次激活干预，内容为进行一次最大重复次数（1RM）深蹲的85%，对照组进行6 - 8次重复。20%速度损失组和10%速度损失组的重复次数根据GymAware PowerTool系统监测的速度损失来确定。选择了四个时间点进行观察：第4分钟、第8分钟、第12分钟和第16分钟。选择这些时间点来测试受试者的出拳能力。结果表明，不同速度损失下的激活训练在拳击运动员中诱发了激活后增强效应，双侧出拳能力均得到改善，且改善程度大于对照组。优势侧在20%速度损失阈值下第12分钟时效果最佳，而非优势侧在10%速度损失阈值下第8分钟时效果最佳。
