title: [Influence of sports on saliva].
abstract: Physical exertion, such as practicing sports, may have an influence on the secretion and composition of saliva. As a result of intensive physical exertion, the saliva immunoglobulin concentration decreases and the concentration of protein--the output of protein (mg/min), however, remains constant--and the viscosity of the saliva increase, while the watery secretion decreases. Moreover, saliva testosterone levels decrease and salivary cortisol levels increase. The saliva Na+, K+, Ca2+ and PO4(3-) concentrations increase slightly or remain unchanged. After a single physical exertion, the alterations are reversible and the values return to baseline within a few hours. In the case of long lasting intensive physical exertions, for instance lasting several months, particularly the decrease in the concentration of the most prevalent immunoglobulins in saliva (s-IgA) seems to have a more permanent character. This has a detrimental effect on the immunological defence, which may reduce oral as well as upper respiratory tract health. Complaints about this are not uncommon among serious athletes who are active at a high competitive level. Among these athletes, the combination of changes in the composition and secretion of saliva, together with intense mouth-breathing and an adjusted diet and drinking habits carry a higher risk of developing caries and erosion. However, in case of decent oral health selfcare, the detrimental effects on oral health can be prevented.
authors.affiliation: Afdeling Kaakchirurgie, Universitair Medisch Centrum Groningen, 9700 RB Groningen.
authors.forename: G J H
authors.initials: GJ
authors.lastname: Bruins
authors.forename: A
authors.initials: A
authors.lastname: Vissink
authors.forename: E C I
authors.initials: EC
authors.lastname: Veerman
authors.forename: A
authors.initials: A
authors.lastname: van Nieuw Amerongen
mesh_terms: D017079:Exercise Tolerance; D006801:Humans; D007136:Immunoglobulins / Q000032:analysis* / Q000378:metabolism; D005082:Physical Exertion / Q000502:physiology*; D012463:Saliva / Q000737:chemistry / Q000276:immunology / Q000378:metabolism; D012471:Salivary Proteins and Peptides / Q000032:analysis*; D012636:Secretory Rate / Q000502:physiology*; D013177:Sports; D013997:Time Factors
chemical_list: D007136:Immunoglobulins; D012471:Salivary Proteins and Peptides