The effects of Lactobacillus gasseri OLL2809 intake on oral immune function in college rugby athletes
10.7600/jspfsm.64.315
- VernacularTitle:MG2809乳酸菌の摂取が大学ラグビー選手の口腔内免疫能に及ぼす影響
- Author:
Yukichi Hanaoka
;
Kazuhiro Shimizu
;
Kosuke Washiya
;
Akira Tamura
;
Masahiro Takemura
;
Takuo Furukawa
;
Toshikazu Miyamoto
;
Koichi Watanabe
;
Takao Akama
- Publication Type:Journal Article
- Keywords:
lactic acid bacteria;
MG2809;
exercise;
secretory immunoglobulin A;
athlete
- From:Japanese Journal of Physical Fitness and Sports Medicine
2015;64(3):315-322
- CountryJapan
- Language:English
-
Abstract:
The purpose of this study was to investigate the effects of Lactobacillus gasseri OLL2809 (MG2809) intake on salivary secretory immunoglobulin A (SIgA) secretion and incidence of upper-respiratory tract infection (URTI) symptoms among college rugby athletes. Sixty-seven subjects were assigned to a MG2809 group (n = 33) or a placebo group (n = 34) using a double-blind procedure. Each subject took MG2809 or placebo tablets for 9 weeks. Resting saliva samples were collected before (0 week) and after 2, 4, 6, 8, and 9 weeks of the MG2809 intakes. A log of URTI symptoms was kept every day during the study period. Our results showed that salivary SIgA level was significantly increased at 6 weeks in the MG2809 group (p < 0.05), although the placebo group did not show significant change. The duration of URTI symptoms episode in the MG2809 group was significantly shorter than that in the placebo (p < 0.05). These results suggest that regular intake of MG2809 may enhance oral immune function mediated by SIgA and reduce the risk of URTI in athletes.
