举起时的指令:类比和明确的指令如何影响性能和运动控制
Angel Carnero-Diaz1, Matt Greig2, David Wing3
1University of Seville, Seville, Spain.
概括
举重中的类比指令改变肌肉激活而不妨碍表现,与可能减少力量发展的明确线索不同. 避免口头指令可能会增强最大力生产.
科学领域:
- 运动学习和控制
- 生物力学和运动生理学
背景情况:
- 传统的举重教练经常使用明确的口头暗示.
- 新兴研究表明,基于类比的指令可以通过隐式控制来增强运动学习.
研究的目的:
- 调查类比 (ANA) 和明确 (EXP) 语言指令对举重运动期间运动性能和肌肉激活的影响.
- 为了比较不同指导策略对新手举重运动员神经肌肉控制和力量产生的有效性.
主要方法:
- 20名新手参与者被随机分配到ANA,EXP或对照组.
- 参与者内部设计了三天的平衡条件,包括熟悉,控制和实验条件.
- 肌肉活动 (EMG),力量产生和声明知识在同位数和动态举重任务期间被评估.
主要成果:
- ANA和EXP指令都导致下肢EMG活动发生显著变化,这表明运动控制重组.
- 与对照组相比,EXP组在最初的200毫秒内显著降低了力量发展速度.
- 对照组的总体力输出更高,这表明口头指令可能会阻碍最大力输出.
结论:
- 避免口头指令可能有利于最大限度地提高举重力输出.
- 类比指令似乎在修改神经肌肉策略的同时保持性能水平.
- 口头指令,特别是明确的指令,可能会以减少初始力量发展的方式改变运动控制.
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