在健康的成年人中,呼吸与四肢肌肉双重任务的认知干扰
Peter Rassam1,2, Tamires de Mori2, Marine Van Hollebeke2
1Rehabilitation Sciences Institute, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada.
ERJ open research
|October 8, 2024
概括
启发性值负载 (ITL) 导致比双重任务期间踩踏更大的认知障碍和前额叶皮层 (PFC) 活动. 这表明ITL诱导的呼吸障碍严重干扰认知.
科学领域:
- 神经科学是一个神经科学.
- 运动生理学 运动生理学
- 认知科学 认知科学
背景情况:
- 启发性值负荷 (ITL) 和呼吸障碍可能会在双重任务期间损害认知能力.
- 之前的研究并没有将ITL与踏板等其他节奏活动进行比较.
- 在ITL或踩踏双重任务期间,前额叶皮层 (PFC) 中的神经机制仍然不清楚.
研究的目的:
- 为了比较ITL的认知和神经效应与在认知-运动双重任务期间踩踏.
- 在ITL-Stroop和踏板-Stroop任务期间调查PFC活动.
- 测试假设ITL双重任务导致比踩踏双重任务更大的认知下降和PFC活动.
主要方法:
- 30名健康的参与者完成了单项和双项任务,包括ITL,踩踏和Stroop任务.
- 使用功能近红外光谱学 (fNIRS) 测量了前额叶皮层 (PFC) 的活性.
- 评估了认知表现 (反应时间,准确性),呼吸障碍和感知到的劳动力.
主要成果:
- 与踏脚-Stroop相比,ITL-Stroop双重任务显著降低了反应时间和准确性.
- 在ITL-Stroop期间,中侧/后侧PFC活动明显高于踩踏-Stroop.
- ITL-Stroop还引起了对呼吸障碍和劳动力的更高的主观评价.
结论:
- 鼓舞性肌肉负荷和相关的呼吸障碍会导致比节奏踏板更显著的认知干扰.
- 这些发现强调了灵感负荷对认知功能和神经活动的重大影响.
- 这表明,在不同类型的体力炼期间,潜在的认知运动干扰存在着不同的神经机制.
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