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Related Experiment Video

Updated: Dec 7, 2025

Using Practice Testing, Public Speaking, and Source Monitoring to Examine the Influences of Learning Strategies and Stress on Episodic Memory
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Experimental effects of acute exercise on forgetting.

D C Moore1, S Ryu1, P D Loprinzi1

  • 1Department of Health, Exercise Science and Recreation Management, Exercise & Memory Laboratory, The University of Mississippi, University, MS 38677, USA.

Physiology International
|September 29, 2020
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Acute exercise does not appear to reduce memory decline over time. This study found no significant effect of exercise on the forgetting rate between short-term and long-term memory assessments.

Keywords:
cognitionmemory consolidationmemory encodingphysical activity

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Area of Science:

  • Cognitive Neuroscience
  • Exercise Physiology

Background:

  • Prior research suggests acute exercise may improve episodic memory, but it's unclear if this enhances memory or reduces forgetting.
  • The neurophysiological mechanisms underlying forgetting, such as RAC1 activation, are potentially influenced by exercise.

Purpose of the Study:

  • To investigate whether acute exercise influences the decline in memory performance from short-term to long-term recall.
  • To determine if exercise attenuates the forgetting process itself.

Main Methods:

  • A meta-analysis of 12 prior laboratory experiments involving 538 participants.
  • Episodic memory was assessed using word-list or paragraph tasks, with short-term recall immediately after encoding and long-term recall ~20 minutes later.
  • Forgetting was quantified as the difference in memory performance between the two time points; exercise interventions were 10-15 minutes of moderate-to-vigorous intensity.

Main Results:

  • Acute exercise, compared to a seated control condition, did not significantly attenuate the forgetting effect (d = 0.10, P = 0.17).
  • No significant moderation of the forgetting effect was found based on study design, exercise intensity, or delay period.

Conclusions:

  • The findings indicate that acute exercise does not reduce the rate of forgetting between short-term and long-term memory recall.
  • Further research is needed to understand the complex relationship between acute exercise and long-term memory consolidation and retrieval.