You Yanwei, Liu Jianxiu, Wang Dizhi, Fu Yingyao, Liu Ruidong, Ma Xindong
Division of Sports Science & Physical Education, Tsinghua University, Beijing 100084, China.
School of Social Sciences, Tsinghua University, Beijing 100084, China.
Brain Sci. 2023 Jan 19;13(2):171. doi: 10.3390/brainsci13020171.
Short sleep is a common issue nowadays. The purpose of this study was to investigate prefrontal cortical hemodynamics by evaluating changes in concentrations of oxygenated hemoglobin (HbO) in cognitive tests among short-sleep young adults and to explore the relationship between sleep duration, physical activity level, and cognitive function in this specific population. A total of 46 participants (25 males and 21 females) were included in our study, and among them, the average sleep duration was 358 min/day. Stroop performance in the short sleep population was linked to higher levels cortical activation in distinct parts of the left middle frontal gyrus. This study found that moderate-to-vigorous physical activity (MVPA) was significantly associated with lower accuracy of incongruent Stroop test. The dose-response relationship between sleep duration and Stroop performance under different levels of light-intensity physical activity (LPA) and MVPA was further explored, and increasing sleep time for different PA level was associated with better Stroop performance. In summary, this present study provided neurobehavioral evidence between cortical hemodynamics and cognitive function in the short sleep population. Furthermore, our findings indicated that, in younger adults with short sleep, more MVPA was associated with worse cognitive performance. Short sleep young adults should increase sleep time, rather than more MVPA, to achieve better cognitive function.
睡眠不足是当今常见的问题。本研究旨在通过评估睡眠不足的年轻成年人在认知测试中氧合血红蛋白（HbO）浓度的变化来研究前额叶皮层血流动力学，并探讨该特定人群的睡眠时间、身体活动水平和认知功能之间的关系。我们的研究共纳入了46名参与者（25名男性和21名女性），其中平均睡眠时间为358分钟/天。睡眠不足人群的Stroop测试表现与左中额叶回不同部位较高水平的皮层激活有关。本研究发现，中度至剧烈身体活动（MVPA）与不一致Stroop测试的较低准确性显著相关。进一步探讨了在不同强度的轻度身体活动（LPA）和MVPA水平下睡眠时间与Stroop测试表现之间的剂量反应关系，不同PA水平下睡眠时间的增加与更好的Stroop测试表现相关。总之，本研究提供了睡眠不足人群皮层血流动力学与认知功能之间的神经行为学证据。此外，我们的研究结果表明，在睡眠不足的年轻成年人中，更多的MVPA与更差的认知表现相关。睡眠不足的年轻成年人应增加睡眠时间，而不是更多的MVPA，以实现更好的认知功能。
