Int J Sports Med 2003; 24(3): 223-229
DOI: 10.1055/s-2003-39096
Immunology
© Georg Thieme Verlag Stuttgart · New York

Tennis, Incidence of URTI and Salivary IgA

A.  M.  P.  Novas1 , D.  G.  Rowbottom1 , D.  G.  Jenkins2
  • 1 School of Human Movement Studies, Queensland University of Technology, Brisbane, Queensland, Australia
  • 2 School of Human Movement Studies, The University of Queensland, Brisbane, Queensland, Australia
Further Information

Publication History



Accepted after revision: October 20, 2002

Publication Date:
12 May 2003 (online)

Abstract

Tennis played at an elite level requires intensive training characterized by repeated bouts of brief intermittent high intensity exercise over relatively long periods of time (1 - 3 h or more). Competition can place additional stress on players. The purpose of this study was to investigate the temporal association between specific components of tennis training and competition, the incidence of upper respiratory tract infections (URTI), and salivary IgA, in a cohort of seventeen elite female tennis players. Timed, whole unstimulated saliva samples were collected before and after selected 1-h training sessions at 2 weekly intervals, over 12 weeks. Salivary IgA concentration was measured by ELISA and IgA secretion rate calculated (µg IgA × ml-1 × ml saliva × min-1). Players reported URTI symptoms and recorded training and competition in daily logs. Data analysis showed that higher incidence of URTI was significantly associated with increased training duration and load, and competition level, on a weekly basis. Salivary IgA secretion rate (S-IgA) dropped significantly after 1 hour of tennis play. Over the 12-week period, pre-exercise salivary IgA concentration and secretion rate were directly associated with the amount of training undertaken during the previous day and week (p < 0.05). However, the decline in S-IgA after 1 h of intense tennis play was also positively related to the duration and load of training undertaken during the previous day and week (p < 0.05). Although exercise-induced suppression of salivary IgA may be a risk factor, it could not accurately predict the occurrence of URTI in this cohort of athletes.

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A. Novas

School of Human Movement Studies · Queensland University of Technology

Victoria Park road · KG Campus · Brisbane · Queensland 4059 · Australia ·

Phone: +61-07-38643360

Fax: +61-07-38643980

Email: anovas2002@yahoo.co

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