Wade Breanna, Loprinzi Paul D
Exercise & Memory Laboratory, Department of Health, Exercise Science and Recreation Management, The University of Mississippi, Oxford, MS 38677, USA.
J Clin Med. 2018 Nov 27;7(12):486. doi: 10.3390/jcm7120486.
Emerging work suggests that acute, moderate-intensity aerobic exercise may help to subserve episodic memory of neutral stimuli. Less investigated, however, is whether acute exercise is associated with enhanced memory recognition of emotional stimuli, which was the purpose of this experiment. A parallel-group randomized controlled experiment was employed. Participants (mean age = 20 yr) were randomized into an exercise ( = 17) or control group ( = 17). The exercise group engaged in a 15-min bout of moderate-intensity treadmill walking. Emotional memory recognition was assessed via images from the International Affective Picture System, including assessments of varying degrees of valence and arousal. Memory recognition was assessed at 1 day, 7 days, and 14 days post-memory encoding. We observed a significant main effect for time (F(2) = 104.2, < 0.001, η² = 0.77) and a significant main effect for valence⁻arousal classification (F(4) = 21.39, < 0.001, η² = 0.40), but there was no significant time by group interaction (F(2) = 1.09, = 0.34, η² = 0.03), classification by group interaction (F(4) = 0.12, = 0.97, η² = 0.01), time by classification interaction (F(8) = 1.78, = 0.08, η² = 0.05), or time by classification by group interaction (F(8) = 0.78, = 0.62, η² = 0.02). In conclusion, emotional memory recognition decreased over the 14-day follow-up period and this rate of memory decay was not altered by acute moderate-intensity exercise engagement. We discuss these findings in the context of exercise intensity and the temporal effects of exercise.
新出现的研究表明，急性中等强度有氧运动可能有助于辅助对中性刺激的情景记忆。然而，较少被研究的是急性运动是否与增强对情绪刺激的记忆识别有关，这也是本实验的目的。本研究采用了平行组随机对照实验。参与者（平均年龄 = 20岁）被随机分为运动组（n = 17）或对照组（n = 17）。运动组进行了15分钟的中等强度跑步机行走。通过国际情感图片系统的图像评估情绪记忆识别，包括对不同程度效价和唤醒的评估。在记忆编码后的第1天、第7天和第14天评估记忆识别。我们观察到时间的显著主效应（F(2) = 104.2，p < 0.001，η² = 0.77）和效价 - 唤醒分类的显著主效应（F(4) = 21.39，p < 0.001，η² = 0.40），但组间与时间的交互作用不显著（F(2) = 1.09，p = 0.34，η² = 0.03），组间与分类的交互作用不显著（F(4) = 0.12，p = 0.97，η² = 0.01），时间与分类的交互作用不显著（F(8) = 1.78，p = 0.08，η² = 0.05），组间、时间与分类的交互作用也不显著（F(8) = 0.78，p = 0.62，η² = 0.02）。总之，在14天的随访期内，情绪记忆识别下降，且急性中等强度运动并未改变这种记忆衰退的速度。我们在运动强度和运动的时间效应背景下讨论了这些发现。
