评估残奥会力量举重运动员肌肉激活和力量的不对称性。
Evaluating the Asymmetry of Muscle Activation and Strength in Paralympic Powerlifting Athletes.
作者信息
Santos Leonardo Dos, Aidar Felipe J, Souza Rafael Luiz Mesquita, de Matos Dihogo Gama, Cataldi Stefania, Greco Gianpiero, Getirana-Mota Márcio, Marçal Anderson Carlos, Souza Lucio Marques Vieira, Santos Jymmys Lopes Dos, Almeida-Neto Paulo Francisco de, Cabral Breno Guilherme de Araújo Tinoco, Badicu Georgian, Nobari Hadi, Souza Raphael Frabrício de
机构信息
Graduate Program of Physical Education, Federal University of Sergipe (UFS), São Cristovão 49100-000, Brazil.
Group of Studies and Research of Performance, Sport, Health and Paralympic Sports (GEPEPS), Federal University of Sergipe (UFS), São Cristovão 49100-000, Brazil.
出版信息
Eur J Investig Health Psychol Educ. 2023 Sep 1;13(9):1645-1654. doi: 10.3390/ejihpe13090119.
BACKGROUND
Strength training is a complex task, as it requires a combination of many variables. In paralympic powerlifting (PP) asymmetries for the evaluation of activation, and static force indicators have been increasingly studied.
OBJECTIVE
To investigate the asymmetries in the strength and muscle activation indicators, before and after a training session of PP athletes.
METHODOLOGY
Twelve elite athletes from the PP participated in the study, and asymmetry was evaluated through surface electromyography (sEMG) and static strength indicators. Evaluations were made before and after a protocol of five series of five repetitions (5 × 5), with 80% of 1-Maximum Repetition (1RM).
RESULTS
In the pectoral muscles, there were differences in the non-dominant limbs between the before and after in the sEMG. There were differences in the pectoralis muscle in the non-dominant limb between moments before (110.75 ± 59.52%) and after (130.53 ± 98.48%, < 0.001), and there was no difference in triceps activation. In the Maximum Isometric Strength (MIF), there was a difference in the non-dominant limb between before (710.36 ± 129.36) and after (620.27 ± 69.73; < 0.030). There was a difference before in the dominant (626.89 ± 120.16; 95% CI 550.55-703.24) and non-dominant (710.36 ± 129.36; = 0.011) limbs. There was no difference in time to MIF.
CONCLUSION
PP athletes showed small levels of asymmetry before and after training, and adaptation to training tends to promote fewer asymmetries.
背景
力量训练是一项复杂的任务，因为它需要多种变量的结合。在残奥会举重（PP）中，用于评估激活的不对称性以及静力指标受到了越来越多的研究。
目的
调查PP运动员训练前后力量和肌肉激活指标的不对称性。
方法
12名来自PP的精英运动员参与了该研究，通过表面肌电图（sEMG）和静力指标评估不对称性。在进行五组每组五次重复（5×5）、强度为1次最大重复量（1RM）的80%的训练方案前后进行评估。
结果
在胸肌中，非优势肢体的sEMG在训练前后存在差异。非优势肢体的胸肌在训练前（110.75±59.52%）和训练后（130.53±98.48%，<0.001）存在差异，而肱三头肌激活没有差异。在最大等长力量（MIF）方面，非优势肢体在训练前（710.36±129.36）和训练后（620.27±69.73；<0.030）存在差异。优势肢体（626.89±120.16；95%CI 550.55 - 703.24）和非优势肢体（710.36±129.36；P = 0.011）在训练前存在差异。达到MIF的时间没有差异。
结论
PP运动员在训练前后的不对称水平较小，并且训练适应倾向于减少不对称性。
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