在超重和肥胖的成年人中,通过中等强度的体力活动休息中断坐着改善认知处理速度:来自SITLess试点随机交叉试验的发现
Dominika M Pindus1, Kathryn M Lloyd2, Tomasz S Ligeza3
1Department of Health and Kinesiology, the University of Illinois Urbana-Champaign, Urbana, IL, USA; Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL, USA; Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
概括
在超重和肥胖 (OW / OB) 的成年人中,通过短暂的中等强度体力活动 (MPA) 打断长时间的坐姿可以改善认知处理,特别是P3b延迟. 这种干预增强了注意力资源的分配,而不影响血糖反应.
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
- 肥胖问题研究研究
背景情况:
- 长时间坐着对超重和肥胖 (OW / OB) 个体的工作记忆 (WM) 有负面影响,这些人经常表现出执行功能缺陷.
- 短暂的体力活动 (PA) 中断可能会减轻这些影响,但它们对OW/OB成人的神经认知功能和血糖反应的影响尚不清楚.
研究的目的:
- 为了研究中断长时间坐着与中等强度体力活动 (MPA) 对WM行为和神经电学指数的急性影响.
- 为了检查神经认知反应和食后血糖反应之间的潜在关联在年轻和中年成人与OW/OB.
主要方法:
- 一项随机交叉试验涉及19名OW/OB成年人,比较了每30分钟中断3小时的长时间坐姿状态,与3.5分钟的MPA发作 (MPA + SIT) 相比,静止社会互动条件 (SOC + SIT).
- 工作记忆 (WM) 和选择反应时间 (RT) 被评估使用1和2回任务,与P3b事件相关潜力 (ERP) 测量注意力分配和认知处理.
- 餐后血糖反应通过口服葡萄糖耐受性测试 (OGTT) 来测量.
主要成果:
- 在MPA+SIT和SOC+SIT条件之间没有观察到血糖反应的显著差异.
- 与SOC+SIT相比,MPA+SIT条件导致明显更短的1-back目标P3b延迟,这表明认知处理得到了增强.
- 虽然WM的行为测量没有显示显著差异,但P3b延迟的减少与反应时间的改善相关.
结论:
- 通过短时间的MPA中断长时间的坐姿,可以增强认知处理的特定方面,特别是注意力资源的分配,在OW/OB的成年人中.
- 需要进一步的研究,以充分阐明这些干预措施的行为结果和潜在的神经认知机制.
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