From the Department of Psychology (Stuart, Wen, DeLongis, Sin), University of British Columbia, Vancouver, British Columbia, Canada; Department of Developmental Psychology (Klaiber), Tilburg University, Tilburg, the Netherlands; and School of Kinesiology (Puterman), University of British Columbia, Vancouver, British Columbia, Canada.
Psychosom Med. 2024 Oct 1;86(8):681-689. doi: 10.1097/PSY.0000000000001338. Epub 2024 Aug 10.
Growing research indicates that daily stress is associated with poorer same-day cognitive performance, for example, memory and attention. However, it is unclear whether this relationship holds across diverse ages and engagement in physical activity (PA), or whether these factors might buffer the relationship between daily stress and subjective cognitive function.
Ecological momentary assessment data were collected from adults aged 25 to 88 years across British Columbia, Canada. For 14 days, participants ( N = 204) wore a triaxial physical activity monitor, reported stressor occurrence in mobile surveys four times per day, and rated their subjective attention and memory at the end of each day.
Multilevel models evaluated daily stressor occurrence as a predictor of subjective attention and memory, with same-day PA engagement and age as moderators. Subjective attention and memory were lower on days when a stressor had occurred, compared to stressor-free days. Neither PA nor age moderated the within-person associations of daily stressors with subjective cognition.
The lack of stress-buffering effects for same-day PA and age raises questions about the contexts in which PA promotes cognitive functioning and about age-related processes underlying stress and cognition. Future work could examine the mechanisms that might explain the link between daily stress and cognition function, as well as the associations of different intensity and forms of physical activity on stress across age groups.
越来越多的研究表明，日常压力与较差的当日认知表现相关，例如记忆和注意力。然而，目前尚不清楚这种关系是否适用于不同年龄段和不同身体活动（PA）参与度的人群，或者这些因素是否可能缓冲日常压力与主观认知功能之间的关系。
从加拿大不列颠哥伦比亚省的 25 至 88 岁成年人中收集了生态瞬间评估数据。在 14 天的时间里，参与者（N=204）佩戴三轴身体活动监测器，每天四次在移动调查中报告应激源的发生情况，并在每天结束时评估他们的主观注意力和记忆力。
多层次模型评估了日常应激源的发生作为主观注意力和记忆力的预测因素，以当天的 PA 参与度和年龄为调节因素。与无应激源的日子相比，发生应激源的日子主观注意力和记忆力较低。PA 和年龄均未调节日常应激源与主观认知之间的个体内关联。
当天 PA 和年龄均无缓冲作用，这引发了对 PA 促进认知功能的背景以及压力和认知背后的与年龄相关的过程的质疑。未来的工作可以研究可能解释日常压力与认知功能之间联系的机制，以及不同强度和形式的身体活动与不同年龄段人群压力之间的关联。
