The effects of acute exercise intensity on episodic and false memory among young adult college students
The effects of acute exercise intensity on episodic and false memory among young adult college students
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DOI：
10.15171/hpp.2019.20
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发表时间：
2019-01-01
影响因子：
4.4
通讯作者：
Loprinzi, Paul D.
中科院分区：
文献类型：
--
作者：
Dilley, Emma K.;Zou, Liye;Loprinzi, Paul D.
背景：先前的实验工作表明，急性运动可以增强情景记忆的表现。然而，有限的研究探讨了急性运动影响虚假情景记忆产生的程度，迄今为止，还没有研究探讨急性运动对真实情景记忆和虚假情景记忆是否存在强度特异性影响。因此，本实验评估了特定强度急性运动对情景记忆和虚假情景记忆的影响。方法：在大学环境中采用三臂、平行、组间随机对照试验，参与者N= 60; M年龄= 20.8岁）随机分为中等强度运动组，在50%心率储备下进行15分钟的跑步机运动，高强度运动组在80%心率储备下进行15分钟的跑步机运动），或对照组时间匹配的静坐时间）。真实情景记忆和虚假情景记忆均使用来自Deese-Roediger-McDermott DRM范式的6个单词列表进行评估，包括短期回忆和延迟记忆识别评估。对于6个列表中的每一个的单词回忆数，列表P < 0.001，eta（2）（p）= 0.15）有显著的主效应，组的主效应P = 0.07，eta（2）（p）= 0.09），但未列出组间相互作用效应P = 0.44，eta（2）（p）= 0.03）。大强度运动组记忆单词数显著多于对照组（P < 0.05）。对于错误的情景词回忆，在各种列表中，高强度的急性运动与更高的错误情景记忆率相关。在记忆再认任务中，词类型P = 0.46，eta（2）（p）= 0.01），组P = 0.4443，eta（2）（p）=. 03），小组互动的单词类型P = 0.44，eta（2）（p）= 0.03），小组互动的回忆P = 0.4441，eta（2）（p）p = 0.04），或小组互动的回忆的单词类型P = 0.32，eta（2）（p）= 0.04）。然而，在回忆方面存在主效应P < 0.001，eta（2）（p）=。54)结论：急性高强度运动可增强真实情景记忆，但也可能增加虚假情景记忆的发生率。我们讨论了这些研究结果的背景下，不同的急性运动强度可能有独特的和差异的影响，潜在的机制过程相关的真实和虚假的情景记忆。
Background: Previous experimental work demonstrates that acute exercise may enhance episodic memory performance. However, limited research has examined the extent to which acute exercise influences false episodic memory production, and no studies, to date, have examined whether there is an intensity-specific effect of acute exercise on both true episodic and false episodic memories. Thus, the present experiment evaluated the effects of intensity-specific acute exercise on episodic memory and false episodic memory.Methods: A three-arm, parallel, between-group randomized controlled trial was employed in the University setting, with participants N= 60; M age = 20.8 years) randomized into a moderateintensity exercise group 15-minute bout of treadmill exercise at 50% heart rate reserve), a highintensity exercise group 15-minute bout of treadmill exercise at 80% heart rate reserve), or a control group time-matched period of sitting). True episodic and false episodic memory were both assessed using 6 word-lists from the Deese-Roediger-McDermott DRM) paradigm, including both a short-term recall and a delayed memory recognition assessment.Results: For the number of words recalled across each of the 6 lists, there was a significant main effect for list P < 0.001, eta(2)(p) = 0.15), marginally significant main effect for group P = 0.07, eta(2)(p) = 0.09), but no list by group interaction effect P = 0.44, eta(2)(p) = 0.03). Those in the high-intensity exercise group recalled significantly P < 0.05) more words than the control group. For the false episodic word recall, across various lists, high-intensity acute exercise was associated with a greater rate of false episodic memories. For the memory recognition task, there was no main effect for word type P = 0.46, eta(2)(p) = 0.01), group P = 0.4443, eta(2)(p) =. 03), word type by group interaction P = 0.44, eta(2)(p) = 0.03), recall by group interaction P = 0.4441, eta(2)(p) p = 0.04), or word type by recall by group interaction P = 0.32, eta(2)(p) = 0.04). However, there was a main effect for recall P < 0.001, eta(2)(p) =. 54) and a word type by recall interaction P < 0.001, eta(2)(p) = 0.77).Conclusion: These findings suggest that acute high-intensity exercise may enhance true episodic memories, and, possibly, also increase the rate of false episodic memories. We discuss these findings in the context of how different acute exercise intensities may have unique and differential effects on underlying mechanistic processes related to true and false episodic memory.