Effects of 20-Minute Intensive Exercise on Subjects with Different Working Memory Bases

• Published in: Advances in experimental medicine and biology Vol. 1269; p. 289
• Main Authors: Qin, Weixiang, Kojima, S, Morishita, S, Hotta, K, Oyama, K, Tsubaki, A
• Format: Journal Article
• Language: English
• Published: United States 2021
• Subjects: Adult; Exercise; Humans; Male; Memory, Short-Term; Oxygen Consumption; Oxyhemoglobins - metabolism; Spectroscopy, Near-Infrared; Moderate-intensity exercise; Oxyhemoglobin; Prefrontal cortex; Two-back test; Working memory; Near-infrared spectroscopy
• ISSN: 0065-2598
• 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 (O Hb) 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 O Hb 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 O Hb were compared. Further, we determined the relationship between the change in the reaction time and time-to-peak O Hb. There was no significant change in the reaction time of the FG; however, that in the SG decreased significantly. The time-to-peak O Hb in the FG was significantly less than that in the SG. These results showed differences in the changes of reaction time and O Hb changes between the FG and SG.