Assessing the Effectiveness of Selected Biomarkers in the Acute and Cumulative Physiological Stress Response in Professional Rugby Union through Non-invasive Assessment

International Journal of Sports Medicine
Angus LindsayNick Draper

Abstract

Rugby union is a sport involving high force and frequency impacts making the likelihood of injury a significant risk. The aim of this study was to measure and report the individual and group acute and cumulative physiological stress response during 3 professional rugby games through non-invasive sampling. 24 professional rugby players volunteered for the study. Urine and saliva samples were collected pre and post 3 matches. Myoglobin, salivary immunoglobulin A, cortisol, neopterin and total neopterin (neopterin+7,8-dihydroneopterin) were analysed by high performance liquid chromatography or enzyme linked immunosorbent assay. Significant increases in cortisol, myoglobin, neopterin and total neopterin when urine volume was corrected with specific gravity were observed (p<0.05). Significant decreases in salivary immunoglobulin A concentration were observed for games 1 and 2 while secretion rate decreased after games 2 and 3. Significant decreases were seen with the percent of 7,8-dihydroneopterin being converted to neopterin following games 2 and 3. The intensity of 3 professional rugby games was sufficient to elicit significant changes in the physiological markers selected for our study. Furthermore, results suggest the selected ...Continue Reading

Citations

Feb 9, 2017·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Angus LindsaySteven P Gieseg
Apr 28, 2016·Journal of Applied Oral Science : Revista FOB·Simonetta D'ErcoleDomenico Tripodi
Apr 30, 2019·International Journal of Sports Physiology and Performance·Caoimhe TiernanGiles Warrington
Sep 6, 2019·Journal of Clinical Medicine·Angus LindsaySteven P Gieseg
Jun 14, 2016·Sports Medicine·Angus Lindsay, Joseph T Costello
Apr 30, 2019·European Journal of Sport Science·Jordan C Troester, Rob Duffield
Jun 29, 2018·Antioxidants·Steven P GiesegAngus Lindsay

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