Document Detail

Effects of voluntary wheel running on heart rate, body temperature, and locomotor activity in response to acute and repeated stressor exposures in rats.
MedLine Citation:
PMID:  21438772     Owner:  NLM     Status:  MEDLINE    
Stress often negatively impacts physical and mental health but it has been suggested that voluntary physical activity may benefit health by reducing some of the effects of stress. The present experiments tested whether voluntary exercise can reduce heart rate, core body temperature and locomotor activity responses to acute (novelty or loud noise) or repeated stress (loud noise). After 6 weeks of running-wheel access, rats exposed to a novel environment had reduced heart rate, core body temperature, and locomotor activity responses compared to rats housed under sedentary conditions. In contrast, none of these measures were different between exercised and sedentary rats following acute 30-min noise exposures, at either 85 or 98 dB. Following 10 weeks of running-wheel access, both groups displayed significant habituation of all these responses to 10 consecutive daily 30-min presentations of 98 dB noise stress. However, the extent of habituation of all three responses was significantly enhanced in exercised compared to sedentary animals on the last exposure to noise. These results suggest that in physically active animals, under some conditions, acute responses to stress exposure may be reduced, and response habituation to repeated stress may be enhanced, which ultimately may reduce the negative and cumulative impact of stress.
Cher V Masini; Tara J Nyhuis; Sarah K Sasse; Heidi E W Day; Serge Campeau
Publication Detail:
Type:  Journal Article     Date:  2011-03-27
Journal Detail:
Title:  Stress (Amsterdam, Netherlands)     Volume:  14     ISSN:  1607-8888     ISO Abbreviation:  Stress     Publication Date:  2011 May 
Date Detail:
Created Date:  2011-04-13     Completed Date:  2011-08-05     Revised Date:  2014-09-19    
Medline Journal Info:
Nlm Unique ID:  9617529     Medline TA:  Stress     Country:  England    
Other Details:
Languages:  eng     Pagination:  324-34     Citation Subset:  IM    
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MeSH Terms
Acoustic Stimulation
Body Temperature / physiology*
Habituation, Psychophysiologic / physiology*
Heart Rate / physiology*
Motor Activity / physiology*
Physical Conditioning, Animal / physiology
Rats, Sprague-Dawley
Stress, Psychological / physiopathology*
Grant Support

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