Changes in salivary secretory immunoglobulin A levels during moderate exercise

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  • 中強度運動負荷中の唾液中分泌型免疫グロブリンAの変化 <原著論文>
  • 中強度運動負荷中の唾液中分泌型免疫グロブリンAの変化
  • チュウ キョウド ウンドウ フカ チュウ ノ ダエキ チュウ ブンピガタ メンエキ グロブリン A ノ ヘンカ

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Abstract

Salivary secretory immunoglobulin A (SIgA) is well known as a marker reflecting immune function in the upper respiratory tract. Several reports demonstrated that salivary SIgA levels varied after exercise. However, serial changes in salivary SIgA levels during moderate exercise were still unknown. We measured salivary secretion rate, salivary SIgA concentration and secretion rate during and after moderate cycling exercise in healthy subjects. Salivary secretion rate and SIgA secretion rate were significantly decreased throughout exercise and returned the baseline levels at 15 min after exercise. On the other hand, no significant change in SIgA concentration was observed during and after exercise. These results suggest that the decrease in salivary secretion rate, but not salivary SIgA concentration, leads to decrease in salivary SIgA secretion rate during moderate exercise.

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