The Effect of Continuous Rugby Matches on Muscle Damage, Stress Hormone and Oral Immunity in Youth Players

• Main Authors: Che-Min Chen, 陳哲民
• Other Authors: Tzai-Li Li
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/66724331934316266380

碩士 === 國立體育大學 === 體育推廣學系碩士班 === 101 === The purposes of this study were to investigate the degree of muscle damage, stress hormone and oral immunity, the differences between forwards and backs, and the correlations between rugby special actions and muscle damage, stress hormone and oral immunity in youth players during continuous rugby matches. Twenty-two elite senior high school male rugby players (age 16.8±0.2 yr, height 173.0±1.3 cm, weight 76.5±2.8 kg, and body fat 21.4±1.3 %, mean ± SE) participated in this study. The subjects engaged three consecutive matches daily and the match parameters were recorded. Blood and salivary samples were collected at pre-match and 20 hrs every post-match for measuring hematocrit, hemoglobin creatine kinase (CK), myoglobin, cortisol, testosterone, testosterone/cortisl (T/C), salivary immunoglobulin A (sIgA) and salivary flow rate. The data were analyzed by repeated measures one-way ANOVA, one-way ANCOVA and Pearson's product-moment correlation. The results of this study showed that the CK levels at every post-match were significantly higher than that at pre-match and the levels of the second and the third post-match significantly higher than that at post-match. However, there were no significant differences between the second and the third post-match. The myoglobin levels at every post-match were significantly higher than that at pre-match. Interestingly, there were no significant differences between post-matches. The levels of cortisol and testosterone were different trends between samples of blood and saliva. The level of sIgA at the third post-match was significantly higher than that at pre-match, whereas salivary flow rate at the second and the third post-match were significantly higher than that at pre-match. The findings of this study suggest that the continuous rugby matches induced cumulative increase of muscle damage but did not affect the biomarkers of stress hormones and oral immunity. There is no different response between forward and backward players in muscle damage and oral immunity. Furthermore, the alteration trends of cortisol, testosterone, and T/C between saliva and blood are inconsistent.