| Saliva flow rate, total protein concentration and osmolality as potential markers of whole body hydration status during progressive acute dehydration in humans. | |
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MedLine Citation:
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PMID: 14693209 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To identify whether saliva flow rate, total protein concentration and osmolality are sensitive non-invasive markers of whole body hydration status, we compared changes in these parameters with changes in body mass during progressive acute dehydration. DESIGN: Twelve euhydrated males reported to the laboratory following an overnight fast and cycled on a stationary ergometer at 60% maximal oxygen uptake in an environmental chamber (30 degrees C and 70% RH) until progressive body mass loss (BML) of 1.1+/-0.0, 2.0+/-0.0 and 2.9+/-0.2%. After exercise, subjects were given a volume of carbohydrate electrolyte solution equivalent to 150% BML to consume within 1h. Unstimulated whole saliva samples were collected over a 2 min period into pre-weighed tubes at pre-exercise, 1.1, 2.0 and 2.9% BML and then at 75, 135 and 195 min post-exercise. RESULTS: Saliva total protein concentration and osmolality increased and flow rate decreased (P<0.01) during dehydration. Saliva total protein concentration and osmolality correlated strongly with % BML during dehydration (mean r=0.97 and 0.94, respectively: P<0.01). The correlation for saliva total protein concentration with % BML was greater (P<0.05) than the correlation for saliva flow rate with % BML (mean r=-0.88: P<0.01) during dehydration. CONCLUSIONS: These data show that changes in saliva total protein concentration and osmolality, and to a lesser extent flow rate, are strongly associated with changes in body mass during progressive acute dehydration. |
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Authors:
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Neil P Walsh; Joanna C Montague; Nichola Callow; Ann V Rowlands |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Archives of oral biology Volume: 49 ISSN: 0003-9969 ISO Abbreviation: Arch. Oral Biol. Publication Date: 2004 Feb |
Date Detail:
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Created Date: 2003-12-24 Completed Date: 2004-06-07 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 0116711 Medline TA: Arch Oral Biol Country: England |
Other Details:
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Languages: eng Pagination: 149-54 Citation Subset: D; IM |
Affiliation:
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School of Sport, Health and Exercise Sciences, University of Wales, Bangor LL57 2PX, UK. n.walsh@bangor.ac.uk |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acute Disease Adult Analysis of Variance Biological Markers / analysis Dehydration / physiopathology* Drinking Exercise / physiology Humans Male Osmolar Concentration Salivary Proteins and Peptides / analysis* Salivation / physiology* Water-Electrolyte Balance / physiology Weight Loss / physiology |
| Chemical | |
Reg. No./Substance:
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0/Biological Markers; 0/Salivary Proteins and Peptides |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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