加速度计测量身体活动,久坐行为和睡眠与老年人第二天认知表现的关联:一项微长度研究
Mikaela Bloomberg1, Laura Brocklebank2, Aiden Doherty2
1Department of Epidemiology and Public Health, University College London, London, UK. mikaela.bloomberg.19@ucl.ac.uk.
概括
身体活动和足够的睡眠,特别是慢波睡眠 (SWS),可以提高老年人的第二天的记忆力和认知功能. 适度至强度体力活动 (MVPA) 的这些好处可能持续长达24小时.
科学领域:
- 老年学是一门学科.
- 认知神经科学 认知神经科学
- 睡眠科学 睡眠科学
背景情况:
- 身体活动的短期认知益处是众所周知的.
- 这些好处是否会持续到第二天,睡眠的作用仍然不清楚.
研究的目的:
- 为了检查体育活动,久坐行为,睡眠和老年人的第二天认知表现之间的关联.
主要方法:
- 76名老年人 (50-83岁) 佩戴加速度计8天,并完成了每天的认知测试.
- 身体活动 (MVPA,LPA,SB) 和睡眠 (持续时间,REM,SWS) 用加速计与机器学习算法对睡眠阶段进行评估.
- 线性混合模型分析了这些关联,控制了习惯模式和其他因素.
主要成果:
- 30分钟的MVPA与更高的情节性和工作记忆得分有关.
- 增加的久坐行为 (SB) 与较低的工作记忆分数有关.
- 睡眠持续时间≥6小时,REM睡眠和慢波睡眠 (SWS) 独立地与改善的情节性记忆,注意力和精神运动速度有关.
结论:
- MVPA的认知效益可能会持续24小时.
- 较长的睡眠时间,特别是SWS,可能会独立地提高认知功能.
- 身体活动和睡眠对于保持老年人的第二天认知能力至关重要.
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