RT Journal Article T1 Antioxidants Markers of Professional Soccer Players During the Season and their Relationship with Competitive Performance A1 Gustavo Ponce-Gonzalez, Jesus A1 Corral-Perez, Juan A1 Saez de Villarreal, Eduardo A1 Vicente Gutierrez-Manzanedo, Jose A1 De Castro-Maqueda, Guillermo A1 Casals, Cristina K1 total antioxidant capacity K1 glutathione K1 oxidative stress K1 elite athletes K1 team sports K1 Oxidative stress biomarkers K1 Muscle damage K1 Oxygen-uptake K1 Time-course K1 Match K1 Endurance K1 Exercise K1 Responses K1 Recovery K1 Fatigue AB The aim of this study was to assess antioxidant markers before and after a mid-season of professional soccer players from the 3rd Spanish Division, and to correlate antioxidant markers with competitive performance. Sixty-five male players (age = 25.3 +/- 4.2 yr, body mass = 73.2 +/- 6.7 kg, body height = 177.8 +/- 5.7 cm) from three soccer clubs from Cadiz (Spain) participated in the study. Body composition, maximal aerobic capacity (VO2max), and baseline antioxidant blood markers (Total Antioxidant Status (TAS) and Reduced glutathione/Oxidized glutathione ratio) were assessed in the first week of the championship season (pre-test) and after 18 weeks in the mid-season (post-test). Soccer performance was registered according to the official classification ranking at both the mid-season and at the end of the season; ranking positions for Team A were 2nd and 1st, for Team B were 5th and 5th, while for Team C were 12th and 14th, respectively. Regression analyses showed that TAS and VO2max were able to independently predict (p PB Sciendo SN 1640-5544 YR 2021 FD 2021-10-01 LK https://hdl.handle.net/10668/25232 UL https://hdl.handle.net/10668/25232 LA en DS RISalud RD Apr 17, 2025