UniSA: Allied Health and Human Performance, University of South Australia, Adelaide, SA, Australia.
Alliance for Research in Exercise, Nutrition and Activity (ARENA), University of South Australia, Adelaide, SA, Australia.
J Appl Biomech. 2024 Jan 4;40(2):147-154. doi: 10.1123/jab.2023-0217. Print 2024 Apr 1.
The purpose of this study was to investigate the dose-response effect of a high-load, 6-repetition, maximum effort inertial flywheel (IFw) squat postactivation performance enhancement (PAPE) protocol on countermovement jump (CMJ) performance metrics. Thirteen subjects completed 5 squat testing sessions: 1 session to determine back-squat 6-repetition maximum, 1 session to determine 6-repetition maximum IFw load, and 3 sessions to investigate the dose-response effect of an IFw PAPE protocol set at the load determined in the second session. In the IFw PAPE sessions, subjects completed either 1, 2, or 3 sets of IFw squats, then performed 5 CMJs over 12 minutes (1, 3, 6, 9, and 12 min post-IFw). All CMJ tests were conducted on a force platform where CMJ performance outcomes and impulse variables were calculated. There was no main time or volume effect for jump height, contact time, reactive strength index, peak force, or any of the impulse variables. A main time effect was identified for flight time (P = .006, effect size = 0.24) and peak power (P = .001, effect size = 0.28). The lack of change in jump height may indicate that too much fatigue was generated following this near-maximal IFw squat protocol, thereby reducing the PAPE effect.
本研究旨在探讨高负荷、6 次重复、最大努力惯性飞轮（IFw）深蹲后激活性能增强（PAPE）方案对反跳式跳跃（CMJ）性能指标的剂量反应效应。13 名受试者完成了 5 次深蹲测试：1 次确定后深蹲 6 次重复最大强度，1 次确定 6 次重复最大 IFw 负荷，3 次用于研究 IFw PAPE 方案在第二会话中确定的负荷的剂量反应效应。在 IFw PAPE 会话中，受试者完成了 1 、 2 或 3 组 IFw 深蹲，然后在 12 分钟内进行了 5 次 CMJ（IFw 后 1 、 3 、 6 、 9 和 12 分钟）。所有 CMJ 测试均在力台上进行，其中计算了 CMJ 性能结果和冲量变量。跳跃高度、接触时间、反应强度指数、峰值力或任何冲量变量均无主要时间或容量效应。飞行时间（P=.006 ，效应大小= 0.24）和峰值功率（P=.001 ，效应大小= 0.28）存在主要时间效应。跳跃高度没有变化可能表明，在这种接近最大的 IFw 深蹲方案之后，产生了太多的疲劳，从而降低了 PAPE 效应。
