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最終更新日：2024/04/20
谷村 祐子
タニムラ ユウコ
(Yuko Tanimura)
論文
- タイトル
- タイトル（英）
- Effects of different exercise intensities or durations on salivary IgA secretion
- 参照URL
- https://researchmap.jp/tanimurayuko/published_papers/46230212
- 著者
- 著者（英）
- Takamasa Uchino,Masataka Uchida,Reita Ito,Shumpei Fujie,Keiko Iemitsu,Chihiro Kojima,Mariko Nakamura,Kazuhiro Shimizu,Yuko Tanimura,Yasushi Shinohara,Takeshi Hashimoto,Tadao Isaka,Motoyuki Iemitsu
- 担当区分
- 概要
- 概要（英）
- Abstract Purpose This study aimed to examine changes in salivary immunoglobulin A (s-IgA) secretion at different intensities or durations of acute exercise. Methods Twelve healthy untrained young males were included in randomized crossover trials in Experiment 1 (cycling exercise for 30 min at a work rate equivalent to 35%, 55%, and 75% maximal oxygen uptake [$${\dot{\text{V } } }$$O2max]) and Experiment 2 (cycling exercise at 55% $${\dot{\text{V } } }$$O2max intensity for 30, 60, and 90 min). Saliva samples were collected at baseline, immediately after, and 60 min after each exercise. Results Experiment 1: The percentage change in the s-IgA secretion rate in the 75% $${\dot{\text{V } } }$$O2max trial was significantly lower than that in the 55% $${\dot{\text{V } } }$$O2max trial immediately after exercise (− 45.7%). The percentage change in the salivary concentration of cortisol, an s-IgA regulating factor, immediately after exercise significantly increased compared to that at baseline in the 75% $${\dot{\text{V } } }$$O2max trial (+ 107.6%). A significant negative correlation was observed between the percentage changes in saliva flow rate and salivary cortisol concentration (r = − 0.52, P < 0.01). Experiment 2: The percentage change in the s-IgA secretion rate in the 90-min trial was significantly lower than that in the 30-min trial immediately after exercise (−37.0%). However, the percentage change in salivary cortisol concentration remained the same. Conclusion Our findings suggest that a reduction in s-IgA secretion is induced by exercise intensity of greater than or equal to 75% $${\dot{\text{V } } }$$O2max for 30 min or exercise duration of greater than or equal to 90 min at 55% $${\dot{\text{V } } }$$O2max in healthy untrained young men.
- 出版者・発行元
- 出版者・発行元（英）
- Springer Science and Business Media LLC
- 誌名
- 誌名（英）
- European Journal of Applied Physiology
- 巻
- 号
- 開始ページ
- 終了ページ
- 出版年月
- 2024年4月18日
- 査読の有無
- 招待の有無
- 掲載種別
- 研究論文（学術雑誌）
- ISSN
- 1439-6319
- DOI URL
- https://doi.org/10.1007/s00421-024-05467-6
- 共同研究・競争的資金等の研究課題