The effects of swimming exercise on recognition memory for objects and conditioned fear in rats - doi 10.4025/actascihealthsci.v34i2.4378

Daniela Delwing de Lima, Débora Delwing Dal Magro, Júlia Niehues da Cruz, José Geraldo Pereira da Cruz


Experiments conducted in animals have repeatedly demonstrated the ability of exercise to enhance cognitive function. This study examines the effects of chronic swimming exercise on non-spatial memory in adult rats after 12 weeks of swimming exercise in object recognition and elevated T-maze tests. In the object recognition test, repeated measures analysis of variance revealed a group effect (F1,42 = 26,093; p < 0.001), control rats had lower discrimination ratios than the exercise group. However, the swimming exercise did not affect the performance of inhibitory avoidance and escapes, when memory was tested in elevated T-maze. Analysis of variance showed a significant reduction in inhibitory avoidance 24h after the first training (F1,42 = 14,552; p < 0.001). Results indicated that regular swimming exercise significantly increased non-spatial memory in object recognition behavior, but did not affect the performance of inhibitory avoidance and escape on elevated T-maze test in adult rats. These findings suggest that the perirhinal cortex plays a role in memory consolidation and storage in addition to that of the amygdala, which could be regarded as the center of a second memory system, separate from those governed by the perirhinal cortex.



amygdala; elevated T-maze; learning; object recognition; perirhinal cortex; physical exercise

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ISSN 1679-9291 (impresso) e ISSN 1807-8648 (on-line) e-mail:


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