Effects of Carbohydrate Beverage Ingestion on the Salivary IgA Response to Intermittent Exercise in the Heat

V. Sari-Sarraf, D. Doran, Neil Clarke, G. Atkinson, T. Reilly

Research output: Contribution to journalArticle

7 Citations (Scopus)


The purpose of this study was to establish if provision of CHO altered the mucosal immune and salivary cortisol responses to intermittent exercise in the heat. In a double-blind design, 10 males undertook soccer-specific intermittent exercise on a motorized treadmill on 2 occasions, each over 90 min and separated by 1 week. During CHO and placebo trials, subjects were given either a carbohydrate solution (3 ml · kg−1 body weight) or placebo drink, 5 min before the commencement of exercise, at 15, 30 min, at half time, 60 and 75 min into exercise. Salivary flow rate increased throughout the placebo trial and decreased throughout the CHO treatment; the difference between conditions neared statistical significance (P=0.055). Neither s-IgA concentration nor s-IgA to osmolality ratio was affected by 2 conditions or differed at any time-point post-exercise (P>0.05). The s-IgA secretion rate increased, s-IgA to protein ratio decreased post-exercise and salivary cortisol decreased 24 h post-exercise (P
Original languageEnglish
Pages (from-to)659-665
Number of pages7
JournalInternational Journal of Sports Medicine
Issue number9
Publication statusPublished - 2011
Externally publishedYes

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  • soccer-specific exercise
  • salivary IgA
  • cortisol
  • CHO


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