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在角色差异化双手动作过程中的力量波动反映了老年人的认知障碍:一个队列序列研究
Julian Rudisch1, Stephanie Fröhlich1, Dieter F Kutz1
1Department of Neuromotor Behavior and Exercise, Institute of Sport and Exercise Sciences, University of Münster, Münster, Germany.
概括
认知衰老和轻度认知障碍会影响双人运动控制. 与轻度认知障碍患者相比,健康的老年人在角色差异化任务中表现出较少的运动复杂性.
科学领域:
- 神经科学是一个神经科学.
- 人类运动控制人体运动控制
- 认知老龄化 认知老龄化
背景情况:
- 角色差异化双手运动 (RDBM) 需要协调行动和抑制不必要的运动.
- 认知衰老和轻度认知障碍 (MCI) 可能会影响支持RDBM的神经网络.
研究的目的:
- 调查健康的认知衰老和MCI对RDBM期间力量稳定的影响.
- 为了比较认知健康个体 (CHI) 和患有MCI的个体之间的运动控制策略.
主要方法:
- 一个队列连续研究设计,对132名老年人 (77 CHI, 55 MCI) 进行了32个月的研究.
- 参与者执行了视觉运动双手力量跟踪任务:双手恒定力和角色差异化的力.
- 使用变化系数 (CV),阻断波动分析 (DFA) 和样本 (SEn) 分析力波动.
主要成果:
- RDBM表现出更高的力波动 (更高的CV) 和不那么复杂的可变性 (更高的DFA,更低的SEN) 比双手常数任务.
- 与MCI相比,CHI在双月常量任务中显示出更复杂的可变性,但在RDBM中较少.
- 在RDBM过程中复杂性的降低在CHI中比MCI更明显.
结论:
- 认知状态影响RDBM期间的运动控制策略.
- 与年龄相关的变化和MCI可能会导致神经网络效率和复杂的双手任务期间注意力控制的明显变化.
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