Department of Sport, Health and Exercise Science, School of Life Sciences, University of Hull, United Kingdom.
School of Public Health, Physiotherapy and Sports Science, University College Dublin, Ireland.
J Strength Cond Res. 2018 Sep;32(9):2510-2520. doi: 10.1519/JSC.0000000000002464.
Scott, DJ, Ditroilo, M, and Marshall, P. Effect of accommodating resistance on the post-activation potentiation response in rugby league players. J Strength Cond Res 32(9): 2510-2520, 2018-This study examined the postactivation potentiation (PAP) response of 2 conditioning activities (CA), the hex bar deadlift and back squat, combined with accommodating resistance; this adds a percentage of the total resistance during the exercise. Twenty amateur rugby league players performed 2 experimental trials and a control trial without a CA. Participants performed a countermovement jump (CMJ) before and 30, 90, and 180 seconds after 1 set of 3 repetitions of each CA at 70% 1 repetition maximum (RM), with up to an additional 23% 1RM from accommodating resistance. Peak power output (PPO), force at PPO, velocity at PPO, and jump height were calculated for each CMJ. Surface electromyography (EMG) of the vastus lateralis (VL), rectus femoris (BF), tibialis anterior (TA), and gastrocnemius medialis (GM) was also measured. Repeated-measures analysis of variance revealed no significant (p > 0.05) PAP response for either exercise condition when comparing CMJ variables with baseline values nor were there any significant (p > 0.05) differences between exercise conditions. However, individualized recovery intervals (baseline vs. maximum potentiation response) demonstrated significant (p ≤ 0.05) improvements in PPO (3.99 ± 4.99%), force at PPO (4.87 ± 6.41%), velocity at PPO (4.30 ± 5.86%), jump height (8.45 ± 10.08%), VL EMG (20.37 ± 34.48%), BF EMG (22.67 ± 27.98%), TA EMG (21.96 ± 37.76%), and GM EMG (21.89 ± 19.65%). Results from this study must be interpreted with caution; however, it is conceivable that athletic performance can be acutely enhanced when complex training variables are individualized.
斯科特、DJ、迪特罗伊尔、M 和马歇尔在橄榄球联赛运动员中研究了适应阻力对激活后增强（PAP）反应的影响。J 力量与调节研究 32(9):2510-2520,2018-本研究检查了 2 种适应能力（CA）的激活后增强（PAP）反应，六角杠铃硬拉和深蹲，同时增加了运动过程中的总阻力的百分比。20 名业余橄榄球运动员进行了 2 次实验试验和 1 次对照试验，没有 CA。参与者在 70% 1 次重复最大（1RM）的每组 3 次重复后，进行了 1 次最大主动收缩（CMJ），每次 CA 还增加了最多 23%的适应阻力 1RM。计算每个 CMJ 的峰值功率输出（PPO）、PPO 处的力、PPO 处的速度和跳跃高度。还测量了股外侧肌（VL）、股直肌（BF）、胫骨前肌（TA）和腓肠肌内侧（GM）的表面肌电图（EMG）。重复测量方差分析显示，当将 CMJ 变量与基线值进行比较时，两种运动条件均未显示出明显的（p>0.05）PAP 反应，运动条件之间也没有明显的（p>0.05）差异。然而，个体恢复间隔（基线与最大增强反应）显示 PPO（3.99±4.99%）、PPO 处的力（4.87±6.41%）、PPO 处的速度（4.30±5.86%）、跳跃高度（8.45±10.08%）、VL EMG（20.37±34.48%）、BF EMG（22.67±27.98%）、TA EMG（21.96±37.76%）和 GM EMG（21.89±19.65%）均有显著改善（p≤0.05）。本研究的结果必须谨慎解释；然而，可以想象，当复杂的训练变量被个体化时，运动表现可以得到急性增强。
