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Experimental Effects of Acute Exercise on Iconic Memory, Short-Term Episodic, and Long-Term Episodic Memory

Exercise Psychology Laboratory, Physical Activity Epidemiology Laboratory, Department of Health, Exercise Science and Recreation Management, The University of Mississippi, Oxford, MS 38677, USA
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J. Clin. Med. 2018, 7(6), 146; https://doi.org/10.3390/jcm7060146
Received: 24 May 2018 / Revised: 4 June 2018 / Accepted: 10 June 2018 / Published: 11 June 2018
(This article belongs to the Special Issue The Effects of Exercise on Cognitive Function)
The present experiment evaluated the effects of acute exercise on iconic memory and short- and long-term episodic memory. A two-arm, parallel-group randomized experiment was employed (n = 20 per group; Mage = 21 year). The experimental group engaged in an acute bout of moderate-intensity treadmill exercise for 15 min, while the control group engaged in a seated, time-matched computer task. Afterwards, the participants engaged in a paragraph-level episodic memory task (20 min delay and 24 h delay recall) as well as an iconic memory task, which involved 10 trials (at various speeds from 100 ms to 800 ms) of recalling letters from a 3 × 3 array matrix. For iconic memory, there was a significant main effect for time (F = 42.9, p < 0.001, η2p = 0.53) and a trend towards a group × time interaction (F = 2.90, p = 0.09, η2p = 0.07), but no main effect for group (F = 0.82, p = 0.37, η2p = 0.02). The experimental group had higher episodic memory scores at both the baseline (19.22 vs. 17.20) and follow-up (18.15 vs. 15.77), but these results were not statistically significant. These findings provide some suggestive evidence hinting towards an iconic memory and episodic benefit from acute exercise engagement. View Full-Text
Keywords: memory consolidation; memory encoding; physical activity; visual memory memory consolidation; memory encoding; physical activity; visual memory
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Yanes, D.; Loprinzi, P.D. Experimental Effects of Acute Exercise on Iconic Memory, Short-Term Episodic, and Long-Term Episodic Memory. J. Clin. Med. 2018, 7, 146.

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