通过增加前额叶皮层激活和腿部强度增加预测的超极小高强度间歇训练后,工作记忆的改善
Sofi Sandström1,2, Emma Simonsson2,3, Mattias Hedlund3
1Department of Diagnostics and Intervention, Umeå University, 90185 Umeå, Sweden.
Cerebral cortex (New York, N.Y. : 1991)
|October 15, 2025
概括
高强度间歇训练 (HIT) 增加腿部力量可能通过增强大脑活动来提高老年人的工作记忆 (WM). 这项研究探讨了运动对认知功能和相关生理变化的影响.
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
- 老年学是一门学科.
背景情况:
- 身体炼有利于老年人的认知功能,特别是工作记忆 (WM).
- 运动诱导的认知改善和个体变化背后的机制尚不清楚.
- 心血管健康和腿部力量是运动对WM影响的潜在媒介.
研究的目的:
- 调查运动诱导的心肺健康和腿部强度的变化是否会改善老年人与WM相关的大脑活动和表现.
- 检查高强度间歇训练 (HIT) 与中等强度训练对WM及其相关神经机制的差异影响.
- 为了确定特定的生理因素调解运动对认知功能的好处.
主要方法:
- 来自随机对照试验 (Umeå HIT研究) 的老年人小样本 (n=43) 参与.
- 参与者在工作记忆任务期间接受了功能磁共振成像 (fMRI).
- 在训练干预之前和之后,评估了工作记忆性能,大脑激活,心肺健康和腿部力量的变化.
主要成果:
- 在工作记忆性能变化方面没有观察到任何显著的群体差异.
- 高强度间歇训练 (HIT) 在工作记忆复合物中显示出在小组内显著的改善.
- 在HIT组中增加的腿部力量预测了右背侧前额叶皮质的更大激活,与改善的WM任务性能相关联.
- 心肺健康变化没有预测WM相关的功能变化.
结论:
- 腿部力量的增加,而不是心肺健康,似乎是一个关键的生理因素驱动运动诱导的改善前额叶皮层激活和工作记忆的表现在老年人.
- 高强度间歇训练 (HIT) 可能通过与改善腿部力量相关的机制提高老年人的工作记忆.
- 需要进一步的研究来阐明身体炼对老年人群认知功能的确切途径.
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