Department of Physical Education, Qingdao University, Qingdao, 266071, China.
Department of Physical Education, Qingdao University, Qingdao, 266071, China.
Physiol Behav. 2023 Jan 1;258:114012. doi: 10.1016/j.physbeh.2022.114012. Epub 2022 Oct 28.
This study aimed to determine the effects of high-intensity interval exercise (HIIE) and moderate-intensity continuous exercise (MICE) on working memory in individuals with high and low aerobic fitness.
The protocol adopted a between-subjects crossover design.
Forty healthy male college students (mean age = 19.59 ± 1.00 years) were assigned to high fitness (n = 20) or low fitness (n = 20) groups based on their estimated maximum oxygen consumption (VO) in the 20 m shuttle run test. All participants were instructed to engage in three acute exercise interventions (10 min HIIE, 20 min HIIE, 20 min MICE) and a reading control intervention on separate days in a randomized order. A spatial 2-back task was performed before and after each intervention to assess working memory.
Analyses of the 2-back task performance revealed that the working memory of high and low fitness participants benefited from different modalities of acute exercise. Specifically, reaction time in the 2-back task was significantly shorter after 20 min HIIE compared to pre-exercise in high fitness participants, whereas low fitness participants had significantly faster reaction time in the 2-back task after 20 min MICE and 10 min HIIE relative to pre-exercise.
The effects of acute aerobic exercise on working memory are modulated by a combination of exercise modality and aerobic fitness. This finding has important implications for providing experimental evidence that participants choose appropriate exercise to undertake based on their level of aerobic fitness to improve cognitive performance.
本研究旨在确定高强度间歇训练（HIIE）和中等强度持续训练（MICE）对有氧适能高和低的个体工作记忆的影响。
该方案采用了受试者间交叉设计。
根据 20 米穿梭跑测试中估计的最大摄氧量（VO），将 40 名健康的男性大学生（平均年龄=19.59±1.00 岁）分为高适能组（n=20）和低适能组（n=20）。所有参与者均被指示在不同天以随机顺序进行三种急性运动干预（10 分钟 HIIE、20 分钟 HIIE、20 分钟 MICE）和阅读对照干预。在每次干预前后进行空间 2 背任务以评估工作记忆。
对 2 背任务表现的分析表明，高适能和低适能参与者的工作记忆受益于不同模式的急性运动。具体而言，高适能参与者在 20 分钟 HIIE 后 2 背任务的反应时间明显短于运动前，而低适能参与者在 20 分钟 MICE 和 10 分钟 HIIE 后 2 背任务的反应时间明显快于运动前。
急性有氧运动对工作记忆的影响受到运动方式和有氧适能的综合调节。这一发现为提供实验证据具有重要意义，即参与者根据自己的有氧适能水平选择适当的运动来提高认知表现。
