Document Detail


Saliva composition and exercise.
MedLine Citation:
PMID:  9739538     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Little attention has been directed toward identifying the changes which occur in salivary composition in response to exercise. To address this, our article first refers to the main aspects of salivary gland physiology. A knowledge of the neural control of salivary secretion is especially important for the understanding of the effects of exertion on salivary secretion. Both salivary output and composition depend on the activity of the autonomic nervous system and any modification of this activity can be observed indirectly by alternations in the salivary excretion. The effects of physical activity (with reference to factors such as exercise intensity and duration, or type of exercise protocol) on salivary composition are then considered. Exercise might indeed induce changes in several salivary components such as immunoglobulins, hormones, lactate, proteins and electrolytes. Saliva composition might therefore be used as an alternative noninvasive indicator of the response of the different body tissues and systems to physical exertion. In this respect, the response of salivary amylase and salivary electrolytes to incremental levels of exercise is of particular interest. Beyond a certain intensity of exercise, and coinciding with the accumulation of blood lactate (anaerobic threshold or AT), a 'saliva threshold' (Tsa) does indeed exist. Tsa is the point during exercise at which the levels of salivary alpha-amylase and electrolytes (especially Na+) also begin to rise above baseline levels. The occurrence of the 2 thresholds (AT and Tsa) might, in turn, be attributable to the same underlying mechanism, that of increased adrenal sympathetic activity at high exercise intensities.
Authors:
J L Chicharro; A Lucía; M Pérez; A F Vaquero; R Ureña
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review    
Journal Detail:
Title:  Sports medicine (Auckland, N.Z.)     Volume:  26     ISSN:  0112-1642     ISO Abbreviation:  Sports Med     Publication Date:  1998 Jul 
Date Detail:
Created Date:  1998-11-02     Completed Date:  1998-11-02     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8412297     Medline TA:  Sports Med     Country:  NEW ZEALAND    
Other Details:
Languages:  eng     Pagination:  17-27     Citation Subset:  IM    
Affiliation:
Escuela de Enfermería, Fisioterapia y Podologia, Facultad de Medicina, Universidad Complutense de Madrid, Spain.
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MeSH Terms
Descriptor/Qualifier:
Anaerobic Threshold / physiology
Anaerobiosis / physiology
Exercise*
Humans
Immunoglobulins / analysis
Lactates / analysis
Saliva / chemistry*,  secretion
Salivary Glands / anatomy & histology,  physiology,  secretion
Chemical
Reg. No./Substance:
0/Immunoglobulins; 0/Lactates

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


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