González-García Jaime, Latella Christopher, Aguilar-Navarro Millán, Romero-Moraleda Blanca
Education and Health Faculty, Camilo Jose Cela University, Villafranca del Castillo, Spain.
Universidad Francisco de Vitoria, Faculty of Health Sciences, Madrid, Spain.
Int J Sports Med. 2023 Jan;44(1):38-47. doi: 10.1055/a-1898-4888. Epub 2022 Jul 12.
This study aimed to identify the effects of same-day resistance priming exercise on countermovement jump parameters and subjective readiness, and to identify whether baseline strength level influenced these outcomes. Fourteen participants performed two separate conditions (Priming [2 sets high-load parallel squats with a 20% velocity loss cut-off] and Control) in a randomized, counterbalanced crossover design. Countermovement jump was assessed at pre, post and 6 h while readiness was assessed at pre and at 6 h only. All countermovement jump force-time metrics were similar between conditions (>0.05), but different individual responses were noted 6 h after priming. Jump height was increased for 4/14, decreased for another 4/14, and maintained for 6/14 participants at 6 h. Higher perceived physical performance capability (<0.001) and activation balance (=0.005) were observed after priming only. Positive relationships were observed between strength and the percentage change in jump height (r=0.47-0.50; =0.033-0.042), concentric peak velocity (r=0.48-0.51; =0.030-0.041) and imulse (r=0.47; =0.030-0.045) at post and 6 h after priming exercise. These findings suggest that velocity-based high-load low-volume priming exercise has potential to positively impact jump performance and subjective readiness later that day in certain individuals. Participant absolute strength level may influence this response but should be confirmed in subsequent studies.
本研究旨在确定当日抗阻预激活训练对纵跳参数和主观准备状态的影响，并确定基线力量水平是否会影响这些结果。14名参与者采用随机、平衡交叉设计，进行了两种不同的训练条件（预激活[2组高负荷平行深蹲，设定速度损失20%的截止值]和对照组）。在训练前、训练后和6小时评估纵跳，仅在训练前和6小时评估准备状态。所有纵跳力-时指标在不同训练条件之间相似（>0.05），但在预激活训练6小时后观察到个体反应存在差异。6小时时，14名参与者中有4名纵跳高度增加，另外4名纵跳高度降低，6名纵跳高度保持不变。仅在预激活训练后观察到较高的感知身体运动能力（<0.001）和激活平衡（=0.005）。在预激活训练后6小时和训练后，力量与纵跳高度变化百分比（r=0.47-0.50；=0.033-0.042）、向心峰值速度（r=0.48-0.51；=0.030-0.041）和冲量（r=0.47；=0.030-0.045）之间存在正相关。这些发现表明，基于速度的高负荷低容量预激活训练有可能在当日晚些时候对某些个体的跳跃性能和主观准备状态产生积极影响。参与者的绝对力量水平可能会影响这种反应，但后续研究应予以证实。
