Can PAPE-Induced Increases in Jump Height Be Explained by Jumping Kinematics?

Q4 Biochemistry, Genetics and Molecular Biology
Xiaojie Jiang, Xin Li, Yining Xu, Dong Sun, Julien S. Baker, Yaodong Gu
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Abstract

The aim of this study was to investigate whether kinematic data during a countermovement jump (CMJ) could explain the post-activation performance enhancement (PAPE) effects following acute resistance exercise. Twenty-four male participants with resistance training and jumping experience were recruited and randomly assigned to either the experimental group (PAPE-stimulus) (n = 12) or the control group (n = 12). In the experimental group, participants performed 5 reps of squats at 80% 1RM to induce PAPE, while the control group received no intervention. Both groups performed three CMJ tests before (PRE) and at immediate (POST0), 4 (POST4), 8 (POST8), and 12 (POST12) min after the intervention, with kinematic data recorded during the CMJ. Kinematic parameters analyzed in this study included jump height, hip-knee-ankle flexion angles at the lowest position of the countermovement, eccentric and concentric time durations, and the temporal changes of hip-knee-ankle flexion angles during the entire jumping phase. The presence of PAPE was determined by the change in jump height. The results showed that in the experimental group, jump height significantly increased at POST4 (p < 0.001) and POST8 (p < 0.001) and significantly decreased at POST0 (p = 0.008), with no significant change at POST12. The control group showed no significant changes at any measured time point. Kinematic parameters showed that there was no significant difference in joint flexion angle of the lower body during the CMJ between pre- and post-intervention, regardless of PAPE or fatigue. However, eccentric time significantly decreased at 4 and 8 min (p = 0.013 and p = 0.001, respectively) after the intervention. These findings suggest that PAPE-induced increases in jump height after acute resistance exercise can be attributed to the decrease in eccentric phase duration, but not joint flexion angle. Additionally, the fatigue-induced decrease in jump height cannot be reflected by jumping kinematics. Based on these findings, coaches may use complex training to utilize the PAPE effects to increase jump height while reducing the eccentric time during vertical jumps. This method can enhance an athlete’s eccentric ability to generate force in a short amount of time which is crucial for performance enhancement.
pape引起的跳高是否可以用跳跃运动学来解释?
本研究的目的是探讨反向运动跳跃(CMJ)期间的运动学数据是否可以解释急性阻力运动后的激活后性能增强(PAPE)效应。招募24名具有抗阻训练和跳跃经验的男性参与者,随机分为实验组(n = 12)和对照组(n = 12)。实验组在80% 1RM下做5次深蹲诱导PAPE,对照组不进行干预。两组均在干预前(PRE)和即刻(POST0)、4 (POST4)、8 (POST8)和12 (POST12) min进行三次CMJ测试,并记录CMJ期间的运动学数据。本研究分析的运动学参数包括起跳高度、髋关节-膝关节-踝关节在反动作最低位置的屈曲角度、偏心和同心持续时间以及整个跳跃阶段髋关节-膝关节-踝关节屈曲角度的时间变化。PAPE的存在是由跳跃高度的变化决定的。结果表明,实验组的跳高在POST4 (p < 0.001)和POST8 (p < 0.001)显著升高,在POST0 (p = 0.008)显著降低,在POST12无显著变化。对照组在任何测量时间点均无明显变化。运动学参数显示,无论是否存在PAPE或疲劳,干预前后CMJ期间下体关节屈曲角度均无显著差异。然而,干预后的偏心时间在4和8分钟显著减少(p = 0.013和p = 0.001)。这些结果表明,急性阻力运动后pape诱导的跳跃高度增加可归因于偏心相持续时间的减少,而不是关节屈曲角的减少。此外,疲劳引起的跳跃高度下降不能通过跳跃运动学反映出来。基于这些发现,教练员可以通过复杂的训练来利用PAPE效应来提高起跳高度,同时减少垂直起跳时的偏心时间。这种方法可以提高运动员在短时间内产生力量的古怪能力,这对提高成绩至关重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Molecular & Cellular Biomechanics
Molecular & Cellular Biomechanics CELL BIOLOGYENGINEERING, BIOMEDICAL&-ENGINEERING, BIOMEDICAL
CiteScore
1.70
自引率
0.00%
发文量
21
期刊介绍: The field of biomechanics concerns with motion, deformation, and forces in biological systems. With the explosive progress in molecular biology, genomic engineering, bioimaging, and nanotechnology, there will be an ever-increasing generation of knowledge and information concerning the mechanobiology of genes, proteins, cells, tissues, and organs. Such information will bring new diagnostic tools, new therapeutic approaches, and new knowledge on ourselves and our interactions with our environment. It becomes apparent that biomechanics focusing on molecules, cells as well as tissues and organs is an important aspect of modern biomedical sciences. The aims of this journal are to facilitate the studies of the mechanics of biomolecules (including proteins, genes, cytoskeletons, etc.), cells (and their interactions with extracellular matrix), tissues and organs, the development of relevant advanced mathematical methods, and the discovery of biological secrets. As science concerns only with relative truth, we seek ideas that are state-of-the-art, which may be controversial, but stimulate and promote new ideas, new techniques, and new applications.
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