Resting salivary levels of IgA and cortisol are significantly affected during intensive resistance training periods in elite male weightlifters

J Strength Cond Res. 2012 Aug;26(8):2202-8. doi: 10.1519/JSC.0b013e31823a4246.

Abstract

The aim of this study was to investigate the cumulative effects of intensive resistance training on salivary immunoglobulin A (SIgA) and cortisol responses in elite male weightlifters. Eleven elite male Taiwanese weightlifters were trained through 3 training stages before a national weightlifting competition, and this was followed by a 2-week recovery stage. Resting saliva samples were collected once in each of the 4 stages. Salivary concentrations of total protein (TP), SIgA, lactoferrin, and cortisol were measured. The results showed that (a) salivary TP concentrations were not significantly affected; (b) resting levels of SIgA, the ratio of SIgA to TP (SIgA/TP), cortisol, and the ratio of cortisol to TP (cortisol/TP) were significantly higher in the training stages than in the recovery stage; (c) a positive correlation was revealed between the ratios of SIgA/TP and cortisol/TP; and (d) the resting salivary lactoferrin concentrations and the ratio of lactoferrin to TP (lactoferrin/TP) were significantly lower in stage 1 than in the recovery stage. The findings in this study suggest that prolonged, intensive resistance training exerts cumulative effects on SIgA and cortisol responses in elite weightlifters.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Humans
  • Hydrocortisone / analysis
  • Hydrocortisone / metabolism*
  • Immunoglobulin A / analysis
  • Immunoglobulin A / metabolism*
  • Lactoferrin / analysis
  • Male
  • Resistance Training*
  • Saliva / chemistry*
  • Salivary Proteins and Peptides / analysis
  • Weight Lifting / physiology*
  • Young Adult

Substances

  • Immunoglobulin A
  • Salivary Proteins and Peptides
  • Lactoferrin
  • Hydrocortisone