Document Detail

Blood pressure and muscle sympathetic nerve activity during cold pressor stress: fitness and gender.
MedLine Citation:
PMID:  12946111     Owner:  NLM     Status:  MEDLINE    
We examined putative autonomic and hemodynamic mechanisms that might explain our prior finding that cardiorespiratory fitness mitigates blood pressure responses by normotensive women during the hand cold pressor test. We report that fitness level was inversely related to increases in systolic and diastolic blood pressures and muscle sympathetic nerve activity (MSNA) during the cold pressor among women but not men. The pattern of responses among fitter women was consistent with decreased central sympathetic outflow resulting in reduced stroke volume or dampened peripheral resistance in vascular beds other than calf skeletal muscle. Fitter men and women had slightly larger increases in blood pressure during mental arithmetic, but otherwise fitness was not directly related to stress responses. The results further encourage consideration of cardiorespiratory fitness as a modifying covariate when the hand cold pressor test is used as a predictor of future hypertension among women.
Rod K Dishman; Yoshio Nakamura; Erica M Jackson; Chester A Ray
Publication Detail:
Type:  Clinical Trial; Journal Article    
Journal Detail:
Title:  Psychophysiology     Volume:  40     ISSN:  0048-5772     ISO Abbreviation:  Psychophysiology     Publication Date:  2003 May 
Date Detail:
Created Date:  2003-08-29     Completed Date:  2004-01-12     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0142657     Medline TA:  Psychophysiology     Country:  United States    
Other Details:
Languages:  eng     Pagination:  370-80     Citation Subset:  IM; S    
Department of Exercise Science, The University of Georgia, Athens, Georgia 30602-6554, USA.
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MeSH Terms
Anaerobic Threshold / physiology
Blood Pressure / physiology*
Cold Temperature / adverse effects*
Muscle, Skeletal / innervation,  physiology*
Physical Fitness / physiology*
Pressure / adverse effects*
Stress, Psychological / physiopathology
Sympathetic Nervous System / physiology*

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