Jung M, Brizes I, Wages S, Ponce P, Kang M, Loprinzi P D
1Exercise & Memory Laboratory, Department of Health, Exercise Science and Recreation Management, The University of Mississippi, University, MS 38677, USA.
2Health and Sport Analytics Laboratory, Department of Health, Exercise Science and Recreation Management, The University of Mississippi, University, MS 38677, USA.
Physiol Int. 2020 Jul 2;107(2):337-348. doi: 10.1556/2060.2020.00017.
No previous studies have evaluated the potential combined effects of acute exercise and acute hypoxia exposure on memory function, which was the purpose of this study. Twenty-five participants (Mage = 21.2 years) completed two laboratory visits in a counterbalanced order, involving 1) acute exercise (a 20-min bout of moderate-intensity exercise) and then 30 min of exposure to hypoxia (FIO2 = 0.12), and 2) exposure to hypoxia alone (FIO2 = 0.12) for 30 min. Following this, participants completed a cued-recall and memory interference task (AB/AC paradigm), assessing cued-recall memory (recall 1 and recall 2) and memory interference (proactive and retroactive interference). For cued-recall memory, we observed a significant main effect for condition, with Exercise + Hypoxia condition having significantly greater cued-recall performance than Hypoxia alone. Memory interference did not differ as a function of the experimental condition. This experiment demonstrates that engaging in an acute bout of exercise prior to acute hypoxia exposure had an additive effect in enhancing cued-recall memory performance.
此前尚无研究评估急性运动和急性低氧暴露对记忆功能的潜在联合影响，而这正是本研究的目的。25名参与者（平均年龄=21.2岁）以平衡顺序完成了两次实验室访视，包括1）急性运动（20分钟的中等强度运动），然后30分钟的低氧暴露（吸入氧分数=0.12），以及2）单独低氧暴露（吸入氧分数=0.12）30分钟。在此之后，参与者完成了线索回忆和记忆干扰任务（AB/AC范式），评估线索回忆记忆（回忆1和回忆2）和记忆干扰（前摄干扰和倒摄干扰）。对于线索回忆记忆，我们观察到条件的显著主效应，运动+低氧条件下的线索回忆表现显著高于单独低氧条件。记忆干扰并未因实验条件而有所不同。本实验表明，在急性低氧暴露之前进行一次急性运动对增强线索回忆记忆表现具有累加效应。
