Laboratory of Neuromuscular Adaptations to Strength Training, Department of Sport, School of Physical Education and Sport, University of Sao Paulo, Sao Paulo, Brazil.
J Strength Cond Res. 2011 Sep;25(9):2496-502. doi: 10.1519/JSC.0b013e318200181b.
The aim of this study was to evaluate the influence of the subjects' level of maximal dynamic strength and training background on postactivation potentiation (PAP). A group of 23 subjects, composed of power track-and-field athletes (PT = 8), bodybuilders (BB = 7), and physically active subjects (PA = 8), participated in the study. Maximal dynamic strength (1 repetition maximum test) was assessed in the leg press exercise for subjects' characterization. Their countermovement vertical jump (CMJ) performance was assessed before and after 2 different conditioning activity (CA) protocols (1 or 3 maximum voluntary isometric contractions [MVICs] of 5-second duration in the leg press exercise) or after control (no CA), performed on separate days. No significant differences among groups were found for CMJ height or take-off velocity after any of the CA protocols (p ≤ 0.05). However, individual analysis showed that some subjects increased performance in response to the CA, despite their previous training history. We concluded that subjects' level of maximal dynamic strength and training background have no influence on PAP manifestation. Our data suggest that coaches should individually identify the athletes that are PAP responders before introducing MVICs as part of their warm-up routines.
本研究旨在评估受试者最大动态力量水平和训练背景对激活后增强（PAP）的影响。研究纳入了 23 名受试者，包括力量田径运动员（PT=8 人）、健美运动员（BB=7 人）和身体活跃的受试者（PA=8 人）。通过腿部按压测试评估受试者的最大动态力量（1 次重复最大测试）以进行特征描述。在不同的 2 种适应训练（CA）方案（腿部按压运动中的 1 或 3 次持续 5 秒的最大自主等长收缩 [MVIC]）或控制（无 CA）后，评估他们的垂直纵跳（CMJ）表现，在不同的日子进行。任何 CA 方案后，组间 CMJ 高度或起跳速度均无显著差异（p≤0.05）。然而，个体分析显示，尽管受试者之前的训练背景不同，但一些受试者的表现有所提高。我们得出结论，受试者的最大动态力量水平和训练背景对 PAP 表现没有影响。我们的数据表明，教练应该在将 MVIC 作为热身程序的一部分引入之前，单独识别出 PAP 反应者的运动员。
