急性运动对情景记忆获得的实验效应：多次试验增益和损失的分解。

Experimental effects of acute exercise on episodic memory acquisition: Decomposition of multi-trial gains and losses.

机构信息

Exercise Psychology Laboratory, Physical Activity Epidemiology Laboratory, Department of Health, Exercise Science and Recreation Management, The University of Mississippi, University, MS 38677, USA.

出版信息

Physiol Behav. 2018 Mar 15;186:82-84. doi: 10.1016/j.physbeh.2018.01.014.

DOI:10.1016/j.physbeh.2018.01.014

PMID:29405944

Abstract

OBJECTIVE

Research demonstrates that acute exercise may enhance retention of multi-trial episodic memories. Previous work has examined the effects of exercise on the mean level of memory recall. However, no study has examined whether exercise can influence the acquisition of new items, which was the purpose of this experiment.

METHODS

Using a randomized controlled trial design, participants (young adults; M=22yrs) completed either a high-intensity bout of treadmill exercise for 15-min (n=22) or sat (n=22) prior to completing a multi-trial episodic memory task. This task involved recalling 15 words for six successive trials, as well as after a 20-min delay (Trial 7). The performance on the multiple trials was categorized into gains (items not recalled on Trial n that were recalled on Trial n+1) and losses (items recalled on Trial n that were not recalled on Trial n+1).

RESULTS

The exercise group recalled more words on Trial 6 (11.4 vs. 9.7; P=0.009) and after the 20-min delay (10.9 vs. 9.4; P=0.01). The exercise group (vs. control) had a smaller proportion of losses from Trial 3-4 (10.4% vs. 20.3%; P=0.04) and had a greater proportion of gains from Trial 5-6 (38.5% vs. 14.8%; P=0.01).

CONCLUSIONS

The exercise-induced multi-trial memory effect may be influenced by greater item gains.

摘要

目的

研究表明，急性运动可能增强多次试验情节记忆的保留。先前的工作已经检查了运动对记忆回忆的平均水平的影响。然而，没有研究检查运动是否可以影响新项目的获取，这是本实验的目的。

方法

使用随机对照试验设计，参与者（年轻人；M=22 岁）在完成多次试验情节记忆任务之前，要么进行 15 分钟的高强度跑步机运动（n=22），要么坐着（n=22）。该任务涉及在六个连续试验中回忆 15 个单词，以及 20 分钟延迟后（试验 7）。多次试验的表现分为增益（试验 n 未回忆的项目，在试验 n+1 中回忆）和损失（在试验 n 中回忆的项目，在试验 n+1 中未回忆）。

结果

运动组在试验 6 中回忆了更多的单词（11.4 比 9.7；P=0.009）和 20 分钟延迟后（10.9 比 9.4；P=0.01）。与对照组相比，运动组从试验 3-4 中损失的比例较小（10.4%比 20.3%；P=0.04），从试验 5-6 中获得的比例更大（38.5%比 14.8%；P=0.01）。