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Randomized Controlled Trial
. 2019 Jul 2;55(7):331.
doi: 10.3390/medicina55070331.

Experimental Effects of Acute Exercise in Attenuating Memory Interference: Considerations by Biological Sex

Lauren Johnson  1 , Lindsay Crawford  1 , Liye Zou  2 , Paul D Loprinzi  3
Affiliations
Randomized Controlled Trial

Experimental Effects of Acute Exercise in Attenuating Memory Interference: Considerations by Biological Sex

Lauren Johnson et al. Medicina (Kaunas). .

Abstract

Background and Objectives: The objective of this experiment was to evaluate the effects of acute exercise on memory interference and determine if this potential relationship is moderated by sex. Materials and Methods: A randomized controlled experiment was conducted (N = 40), involving young adult males (n = 20) and females (n = 20) completing two counterbalanced visits (exercise and no exercise). The exercise visit involved an acute (15 min), moderate-intensity bout of treadmill exercise, while the control visit involved a time-matched seated task. Memory interference, including both proactive interference and retroactive interference, involved the completion of a multi-trial memory task. Results: In a factorial ANOVA with the outcome being List B, there was a main effect for condition (F(1,38) = 5.75, P = 0.02, n2p = 0.13), but there was no main effect for sex (F(1,38) = 1.39, P = 0.24, n2p = 0.04) or sex by condition interaction (F(1,38) = 1.44, P = 0.23, n2p = 0.04). Conclusion: In conclusion, acute moderate-intensity exercise was effective in attenuating a proactive memory interference effect. This effect was not moderated by biological sex.

Keywords: cognition; encoding; learning; memory; physical activity.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Schematic of the memory assessment protocol.
Figure 2
Figure 2
List B memory scores across condition. Solid bar represents the group average.
Figure 3
Figure 3
Trial 1 - list B memory scores across condition and sex. Solid bar represents the group average.
See this image and copyright information in PMC

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