PDF(Pubmed)
Abstract：
Balance requires constant adjustments in muscle activation to attain force steadiness. Creating appropriate training can be challenging. The purpose of this study was to examine the effects of 2 weeks of front squat instability training using a water-filled training tube on force steadiness during an instability challenge. Control (CON, n = 13) and experimental (EXP, n = 17) subjects completed pre- and post-testing for EMG variability by completing one set of 10 repetitions with a stable and unstable training tube. Electrodes were placed bilaterally on the anterior deltoid, paraspinal, and vastus lateralis muscles. CON subjects completed 2 weeks of training using a stable training tube, while EXP subjects trained with a water-filled instability tube. EMG data were integrated for each contraction, and force steadiness was computed using the natural log of coefficient of variation. CON results showed no changes in force steadiness for any condition. EXP showed significant reductions in EMG activation variability across all muscles. These results indicate a significant training effect in reducing muscle activation variability in subjects training with a water-filled instability training device. Improvements seen in these healthy subjects support the development of training implements for a more clinical population to help improve force steadiness.
摘要：
平衡需要不断调整肌肉激活以获得力的稳定性。创建适当的培训可能具有挑战性。这项研究的目的是研究在不稳定挑战期间，使用充满水的训练管进行2周的前蹲不稳定训练对力稳定性的影响。控制(CON,n=13)和实验(EXP，n=17）受试者通过使用稳定和不稳定的训练管完成一组10次重复来完成EMG变异性的前后测试。电极两侧放置在前三角肌上，椎旁,和股外侧肌。CON受试者使用稳定的训练管完成2周的训练，而EXP受试者用充满水的不稳定管训练。每次收缩的肌电图数据进行整合，使用变异系数的自然对数计算力的稳定性。CON结果显示在任何条件下力的稳定性没有变化。EXP显示所有肌肉的EMG激活变异性显着降低。这些结果表明，在使用充满水的不稳定训练装置进行训练的受试者中，在减少肌肉激活变异性方面具有显着的训练效果。在这些健康受试者中看到的改进支持了针对更多临床人群的培训工具的开发，以帮助提高部队的稳定性。
