Document Detail


Exercise-induced sympathetic activation is correlated with cerebral hemisphere laterality, but not handedness.
MedLine Citation:
PMID:  11114948     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
To investigate whether sympathetic responses are correlated with central laterality or handedness, muscle sympathetic nerve activity (MSNA), heart rate (HR) and blood pressure (BP) were compared between right (RA) and left arm (LA) grip exercise with volitional maximum effort (MVHG) for 2 min and post-exercise arterial occlusion (PEAO) in right- and left-handed volunteers. MVHG and PEAO led to a greater increase in MSNA in RA than in LA exercise (180 vs. 150%, P=0.004; 140 vs. 85%, P=0.005). MVHG elevated HR to a significantly lesser extent in RA than in LA (35 vs. 46%, P=0.030), and the difference was maintained during PEAO. The BP rise during MVHG and PEAO was the same in RA and in LA. Muscle sympathetic nerve activity, HR and BP responses during MVHG and PEAO showed no difference between the dominant and non-dominant arm. These results suggested that the effects of central motor command and metaboreflex on sympathetic outflow to the vasculature and the heart may be selectively modulated partly by hemispherical laterality.
Authors:
M Saito
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Acta physiologica Scandinavica     Volume:  170     ISSN:  0001-6772     ISO Abbreviation:  Acta Physiol. Scand.     Publication Date:  2000 Oct 
Date Detail:
Created Date:  2000-12-21     Completed Date:  2001-01-11     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0370362     Medline TA:  Acta Physiol Scand     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  111-8     Citation Subset:  IM    
Affiliation:
Applied Physiology Laboratory, Toyota Technological Institute, Nagoya 468-8511, Japan.
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MeSH Terms
Descriptor/Qualifier:
Adult
Blood Pressure / physiology
Functional Laterality / physiology*
Hand Strength / physiology
Heart Rate / physiology
Humans
Male
Motor Cortex / physiology
Physical Exertion / physiology*
Reflex / physiology
Sympathetic Nervous System / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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