title: Resting salivary levels of IgA and cortisol are significantly affected during intensive resistance training periods in elite male weightlifters.
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.
authors: Institute of Athletics, National Taiwan College of Physical Education, Taichung, Taiwan.
authors: Min-Lung
authors: ML
authors: Tsai
authors: Tzai-Li
authors: TL
authors: Li
authors: Li-Wei
authors: LW
authors: Chou
authors: Chen-Kang
authors: CK
authors: Chang
authors: Shu-Yi
authors: SY
authors: Huang
authors: Shih-Hua
authors: SH
authors: Fang
mesh_terms: D000328:Adult; D006801:Humans; D006854:Hydrocortisone / Q000032:analysis / Q000378:metabolism*; D007070:Immunoglobulin A / Q000032:analysis / Q000378:metabolism*; D007781:Lactoferrin / Q000032:analysis; D008297:Male; D055070:Resistance Training; D012463:Saliva / Q000737:chemistry*; D012471:Salivary Proteins and Peptides / Q000032:analysis; D014891:Weight Lifting / Q000502:physiology*; D055815:Young Adult
chemical_list: D007070:Immunoglobulin A; D012471:Salivary Proteins and Peptides; D007781:Lactoferrin; D006854:Hydrocortisone