概括
身体活动可以保护认知从空气污染. 发现较高的体力活动 (PA) 水平可以减轻空气污染的不利认知影响,强调促进PA的重要性.
科学领域:
- 环境健康 环境健康
- 神经科学是一个神经科学.
- 公共卫生 公共卫生
背景情况:
- 空气污染对认知健康构成重大威胁.
- 众所周知,体力活动 (PA) 具有众多的健康益处,但其在减轻与污染相关的认知衰退方面的作用尚未完全理解.
研究的目的:
- 研究暴露于主要空气污染物和老年人认知功能之间的关联.
- 检查身体活动是否能缓和空气污染对认知功能的影响.
主要方法:
- 利用了来自2018年中国健康与退休长度研究 (CHARLS) 的数据,其中有17734名45岁以上的参与者.
- 使用健康和退休研究 (HRS) 方法评估认知功能.
- 采用两阶段最小平方方法,将通风系数作为仪表变量,以估计颗粒物 (PM1,PM2.5,PM10),二氧化 (NO2),二氧化硫 (SO2) 和臭氧 (O3) 对认知的影响.
主要成果:
- 所有测量的空气污染物都与认知功能下降有显著的关联.
- 在PM1,PM2.5,PM10,NO2,SO2和O3的四分位数间范围 (IQR) 增加对应于认知功能的下降,分别为-0.45,-0.43,-0.53,-0.57,-0.47和-1.06点.
- 较高水平的体力活动显著减轻了空气污染和认知功能之间的负面关联,表明有保护作用.
结论:
- 空气污染对老年人的认知功能产生不利影响.
- 身体活动可以作为防治空气污染引起的认知衰退的保护因素.
- 公共卫生战略应考虑促进身体活动,同时采取减少污染的措施,以保护认知健康.
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