The rapid recovery of vertical force propulsion production and postural sway after a specific fatigue protocol in female handball athletes
The rapid recovery of vertical force propulsion production and postural sway after a specific fatigue protocol in female handball athletes
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DOI：
10.1016/j.gaitpost.2020.01.017
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发表时间：
2020-03-01
期刊：
影响因子：
2.4
通讯作者：
Pereira Santiago, Paulo Roberto
中科院分区：
文献类型：
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作者：
Souza Bedo, Bruno Luiz;Pereira, Dayanne Rodrigues;Pereira Santiago, Paulo Roberto
背景：肌肉疲劳的特征是肌肉性能下降，同时感觉到的产生所需力量的强度增加。关于运动员的姿势摆动和力量产生，疲劳效应的持续时间尚不完全清楚。研究问题：特定的疲劳方案对女性手球运动员的姿势摆动和力量产生有什么影响，以及这些变量所需的恢复时间？方法：20名女手球运动员参加了这项研究。具体的手球动作以循序渐进的圈数形式构成疲劳规程。他们以一条腿的姿势笔直地站在一个力量板上。对于最大推进力(F-Max)，他们在力板上进行了反转跳跃。结果：疲劳后各时间点的最大压力中心(COP)下降至9.5%，De COP面积增加224%。在恢复阶段，F-Max和COP面积在5分钟后恢复到基线值。意义：紧接疲劳方案后的前5分钟代表疲劳效应仍然存在的时间间隔。未来愿意调查疲劳对运动员影响的研究应该在这一短时间窗口内进行分析。
Background: Muscle fatigue is characterized by a decrease in muscle performance, accompanied by an increase in perceived exertion to produce a desired amount of force. The duration of the fatigue effects is not completely clear regarding postural sway and force production in athletes.Research question: What is the effect of a specific fatigue protocol in postural sway and force production in female handball athletes and the recovery time necessary for these variables?Methods: Twenty female handball athletes participated in this study. Specific handball actions composed the fatigue protocol in the format of a circuit with the gradual increment of laps. They stood upright in one-leg posture on a force plate. For the maximum propulsion force (F-MAX), they performed a countermovement jump on the force plate. The center of pressure (COP) and the F-MAX were obtained at baseline, immediately after the exhaustion due to the fatigue protocol and every minute during the first 10 min of the recovery phase.Results: The F-MAX decreased similar to 9.5% after the fatigue protocol, whereas de COP area increased 224%. During the recovery phase, the F-MAX and the COP area returned to baseline values after five minutes.Significance: The first five minutes immediately after the fatigue protocol represent the time interval where the fatigue effects are still present. Future studies willing to investigate the effects of fatigue in athletes should perform the analysis within this short time-window.