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The Effect of Exercise on Salivary Viscosity
Antoon J M Ligtenberg1, Erwin H S Liem2, Henk S Brand3
1Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, 1081LA, Amsterdam, The Netherlands. a.ligtenberg@acta.nl.
Exercise increases saliva thickness by boosting MUC5B secretion. This study found higher salivary viscosity and MUC5B levels immediately post-exercise, contributing to a dry mouth sensation.
Area of Science:
- Oral biology
- Exercise physiology
Background:
- Post-exercise dry mouth is common.
- Salivary mucin MUC5B influences saliva's viscoelastic properties.
Purpose of the Study:
- To investigate exercise's impact on salivary viscosity.
- To examine exercise's effect on MUC5B secretion in saliva.
Main Methods:
- Twenty healthy students performed 15-minute aerobic cycling.
- Saliva samples collected pre-exercise, immediately post-exercise, and after 30-minute recovery.
- Measured salivary flow rate, viscosity, amylase, total protein, carbohydrate, and MUC5B concentration.
Main Results:
- Salivary flow rate, protein, and amylase remained unchanged.
- Salivary viscosity and carbohydrate concentration significantly increased immediately after exercise.
- MUC5B concentration was significantly higher immediately after exercise compared to the recovery phase.
Conclusions:
- Increased MUC5B secretion contributes to thicker saliva after exercise.
- Findings explain the sensation of dry mouth post-physical exertion.
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