为应对力量训练而改变规范化的相互信息:对准随机受控试验的辅助分析
Mathias Kristiansen1, Ernst Albin Hansen1,2, Afshin Samani1
1Sport Sciences-Performance and Technology, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark.
Scandinavian journal of medicine & science in sports
|August 9, 2023
概括
从表面EMG获得的规范化相互信息 (NMI) 显示,在测试台压力过程中,测试重试的可靠性很大. 训练导致了一些NMI变化,但这些变化低于最小可检测值,质疑真正的神经适应.
科学领域:
- 生物力学 生物力学
- 神经科学是一个神经科学.
- 运动科学 运动科学 运动科学
背景情况:
- 肌肉协调和神经适应对于力量训练至关重要.
- 表面电肌图 (sEMG) 和正常化相互信息 (NMI) 提供了关于肌肉协同作用的见解.
- 了解NMI的可靠性和敏感性对于跟踪培训引起的变化至关重要.
研究的目的:
- 为了评估动态长椅压力过程中的上肢肌肉sEMG的NMI值的测试-重新测试可靠性.
- 为了评估NMI值在5周的长板压力训练干预后的变化.
主要方法:
- 20名力量训练的男性接受了两次3重复最大 (3RM) 长椅压力测试,从六个上肢肌肉中记录了sEMG以评估可靠性.
- 一项为期5周的训练干预涉及17名男性 (TRA组) 进行长椅压力训练,13名男性作为对照 (CON组).
- 对两组患者进行了干预前和干预后的sEMG和3RM测试.
主要成果:
- NMI值显示了实质性的测试复试可靠性,从差到几乎完美.
- 训练组显示,在激动性-激动性肌肉对的集中阶段,NMI下降.
- 对于一些激动剂-激动剂和激动剂-对抗剂肌肉对,NMI值在异常阶段增加,但变化不超过最小可检测值.
结论:
- 在动态长椅压力过程中,NMI在评估肌肉协同作用方面表现出相当可靠.
- 虽然训练诱导了NMI的一些变化,但由于没有超过最小可检测值,这些并不是真正的神经适应的明确迹象.
- 需要进一步的研究来验证NMI作为神经适应应对力量训练的敏感标志物.
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