ISSN:
1439-6327
Keywords:
Exercise
;
Acute hypoxia
;
Saliva
;
Parasympathetic activity
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Summary The effects of acute hypoxia (2 days at 4350 m) on whole saliva flow and composition were studied on 12 sea-level natives, at rest and following a maximal exercise. Exercise, performed in normoxia and hypoxia, did not induce variations in saliva flow rate, saliva potassium or α-amylase concentrations. In contrast, acute hypoxia did lead to an increase in mean saliva flow rate both at rest (0.63 ml·min−1 to 0.93 ml·min−1,P〈0.01) and after exercise (0.56 ml·min−1 to 1.06 ml·min−1,P〈0.05) and a decrease in mean saliva potassium concentration at rest (20.8 mmol·1−1 to 14.7 mmol·1−1,P〈0.01) as well as after exercise (21.7 mmol·1−1 to 16.5 mmol·1−1,P〈0.05). This effect might be the consequence of a hypoxia-induced stimulation of the parasympathetic nervous system.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02388627
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