RESUMEN
The purpose of this study was to investigate the effects of single and repeated bouts of gymnastic training on salivary IgA and cortisol, in elite boy's gymnasts. Twenty boys with mean age of 10 +/- 0.8 years, height 145 +/- 9 cm, weight 37 +/- 8 kg and body fat percent 14.2 +/- 6[meam +/- SE] in Ghaemshahr Club in 2007, performed the select and controlled gymnastic training in two bouts [single session, and double session], one week apart. The first bout, included one session a day, beginning at 6 to 8 P.M. and the second bout was performed in two sessions per day, beginning at 8.30 to 10.30 A.M and 6 to 8 P.M. Salivary samples [5 ml] to form un-stimulated were collected in pre-exercise, immediately after and 2 hours following gymnastic training. Levels of IgA and cortisol were measured by ELISA method. ANOVA test was performed for analysis of the obtained data. The IgA level indicated no significant change after two bouts of exercise within the same day [P>0.5], however, cortisol concentration increased [P<0.05]. No significant correlation was observed between IgA and cortisol concentrations. These findings suggest that two bouts of gymnastic training [120-minutes], at moderate intensity with a 7.30 hours rest in between, had no effect on IgA concentration, but caused an increased in cortisol concentration.