Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Niigata, Japan.
College of Engineering, Nihon University, Tokyo, Japan.
Adv Exp Med Biol. 2021;1269:289-294. doi: 10.1007/978-3-030-48238-1_46.
Continuous moderate-intensity aerobic exercise improves cognitive function including working memory (WM). We aimed to determine the differences in the effects of exercise on WM based on pre-exercise WM function and oxyhemoglobin (OHb) changes. We enrolled 12 healthy adult males who, after a 4-min rest and warm-up, performed a 20-min exercise regime at a workload corresponding to 50% of maximal oxygen consumption. They performed a pre- and postexercise two-back test, and the reaction times were recorded. Near-infrared spectroscopy was used to monitor the OHb concentration in the left prefrontal cortex during the exercise. Based on the pre-exercise reaction time, the subjects were allocated into either a fast group (FG) or a slow group (SG). The pre- and postexercise changes in the reaction time and time-to-peak OHb were compared. Further, we determined the relationship between the change in the reaction time and time-to-peak OHb. There was no significant change in the reaction time of the FG; however, that in the SG decreased significantly. The time-to-peak OHb in the FG was significantly less than that in the SG. These results showed differences in the changes of reaction time and OHb changes between the FG and SG.
持续的中等强度有氧运动可以改善认知功能，包括工作记忆（WM）。我们旨在根据运动前 WM 功能和氧合血红蛋白（OHb）的变化，确定运动对 WM 的影响的差异。我们招募了 12 名健康成年男性，他们在休息和热身 4 分钟后，以最大摄氧量的 50%的工作量进行了 20 分钟的运动。他们在运动前后都进行了双背测试，记录了反应时间。近红外光谱用于监测运动期间左前额叶皮层的 OHb 浓度。根据运动前的反应时间，将受试者分为快速组（FG）和缓慢组（SG）。比较了反应时间和峰值 OHb 时间的预、后变化。此外，我们还确定了反应时间变化与峰值 OHb 时间之间的关系。FG 的反应时间没有明显变化，而 SG 的反应时间明显下降。FG 的峰值 OHb 时间明显短于 SG。这些结果表明 FG 和 SG 之间的反应时间变化和 OHb 变化存在差异。
