The effects of Lactobacillus gasseri OLL2809 intake on oral immune function in college rugby athletes

Yukichi Hanaoka; Kazuhiro Shimizu; Kosuke Washiya; Akira Tamura; Masahiro Takemura; Takuo Furukawa; Toshikazu Miyamoto; Koichi Watanabe; Takao Akama

doi:10.7600/jspfsm.64.315

The effects of Lactobacillus gasseri OLL2809 intake on oral immune function in college rugby athletes

Yukichi Hanaoka, Kazuhiro Shimizu, Kosuke Washiya, Akira Tamura, Masahiro Takemura, Takuo Furukawa, Toshikazu Miyamoto, Koichi Watanabe, Takao Akama

School of Sport Sciences

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

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.

Original language	English
Pages (from-to)	315-322
Number of pages	8
Journal	japanese journal of physical fitness and sports medicine
Volume	64
Issue number	3
DOIs	https://doi.org/10.7600/jspfsm.64.315
Publication status	Published - 2015

Keywords

Athlete
Exercise
Lactic acid bacteria
MG2809
Secretory immunoglobulin A

ASJC Scopus subject areas

Orthopedics and Sports Medicine
Physical Therapy, Sports Therapy and Rehabilitation

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The effects of Lactobacillus gasseri OLL2809 intake on oral immune function in college rugby athletes. / Hanaoka, Yukichi; Shimizu, Kazuhiro; Washiya, Kosuke; Tamura, Akira; Takemura, Masahiro; Furukawa, Takuo; Miyamoto, Toshikazu; Watanabe, Koichi; Akama, Takao.

In: japanese journal of physical fitness and sports medicine, Vol. 64, No. 3, 2015, p. 315-322.

Research output: Contribution to journal › Article › peer-review

Hanaoka, Yukichi ; Shimizu, Kazuhiro ; Washiya, Kosuke ; Tamura, Akira ; Takemura, Masahiro ; Furukawa, Takuo ; Miyamoto, Toshikazu ; Watanabe, Koichi ; Akama, Takao. / The effects of Lactobacillus gasseri OLL2809 intake on oral immune function in college rugby athletes. In: japanese journal of physical fitness and sports medicine. 2015 ; Vol. 64, No. 3. pp. 315-322.

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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.",

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The effects of Lactobacillus gasseri OLL2809 intake on oral immune function in college rugby athletes

Abstract

Keywords

ASJC Scopus subject areas

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