Document Detail

Effects of acute and chronic physical exercise and stress on different types of memory in rats.
MedLine Citation:
PMID:  18506256     Owner:  NLM     Status:  MEDLINE    
Here we study the effect of acute and chronic physical exercise in a treadmill and of daily stress (because forced exercise involves a degree of stress) during 2 or 8 weeks on different types of memory in male Wistar rats. The memory tests employed were: habituation in an open field, object recognition and spatial learning in the Morris water maze. Daily foot-shock stress enhanced habituation learning after 2 but not after 8 weeks; it hindered both short- (STM) and long-term memory (LTM) of the recognition task at 2 weeks but only STM after 8 weeks and had no effect on spatial learning after either 2 or 8 weeks. Acute but not chronic exercise also enhanced habituation in the open field and hindered STM and LTM in the recognition task. Chronic exercise enhanced one important measure of spatial learning (latency to escape) but not others. Our findings indicate that some care must be taken when interpreting effects of forced exercise on brain parameters since at least part of them may be due to the stress inherent to the training procedure.
Pâmela Billig Mello; Fernando Benetti; Martín Cammarota; Iván Izquierdo
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Anais da Academia Brasileira de Ciências     Volume:  80     ISSN:  0001-3765     ISO Abbreviation:  An. Acad. Bras. Cienc.     Publication Date:  2008 Jun 
Date Detail:
Created Date:  2008-05-28     Completed Date:  2008-09-18     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7503280     Medline TA:  An Acad Bras Cienc     Country:  Brazil    
Other Details:
Languages:  eng     Pagination:  301-9     Citation Subset:  IM    
Programa de Pós-Graduação em Ciências Biológicas: Fisiologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, 90050-170, Brazil.
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MeSH Terms
Exercise Test
Maze Learning / physiology
Memory / physiology*
Physical Conditioning, Animal / physiology*,  psychology
Rats, Wistar
Spatial Behavior / physiology*
Stress, Psychological / physiopathology*
Time Factors

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