Zheng Kefeng, Deng Zhangyan, Qian Jiali, Chen Yanxia, Li Shiyuan, Huang Tao
Department of Physical Education, Shanghai Jiao Tong University, Shanghai, China.
School of Education, Shanghai Jiao Tong University, Shanghai, China.
Front Behav Neurosci. 2022 Aug 2;16:884490. doi: 10.3389/fnbeh.2022.884490. eCollection 2022.
This study aimed to examine the concurrent performance of working memory and cortical activity during acute aerobic exercise in young adults. In a crossover study design, 27 young adults (mean age = 22.7 ± 3.4 years, 15 women) participated in two experimental conditions in a randomized order: (1) sitting condition (without exercise) and (2) cycling condition (moderate-intensity exercise). Working memory was measured with a modified version of the n-back task. A functional near-infrared spectroscopy (fNIRS) was used to measure cortex activation. In the cycling condition, response time (RT) for the n-back task was significantly faster ( < 0.05). No differences in accuracy were observed between the sitting and cycling conditions. The fNIRS results showed that the oxygenated hemoglobin (oxy-Hb) concentrations in the bilateral frontopolar area ( < 0.05), dorsolateral prefrontal cortex ( < 0.05), and right premotor and supplementary cortex ( < 0.05) were decreased while cycling. The findings indicated that the concurrent performance of working memory was improved during acute aerobic exercise, whereas cortical activity was decreased in some brain regions.
本研究旨在探讨年轻人在急性有氧运动期间工作记忆与皮层活动的同时表现。在一项交叉研究设计中，27名年轻人（平均年龄=22.7±3.4岁，15名女性）以随机顺序参与两种实验条件：（1）坐姿状态（无运动）和（2）骑行状态（中等强度运动）。使用n-back任务的修改版测量工作记忆。采用功能性近红外光谱技术（fNIRS）测量皮层激活情况。在骑行状态下，n-back任务的反应时间（RT）显著更快（P<0.05）。坐姿和骑行状态之间未观察到准确性差异。fNIRS结果显示，骑行时双侧额极区（P<0.05）、背外侧前额叶皮层（P<0.05）以及右侧运动前区和辅助运动皮层（P<0.05）的氧合血红蛋白（oxy-Hb）浓度降低。研究结果表明，急性有氧运动期间工作记忆的同时表现得到改善，而某些脑区的皮层活动则有所下降。
