PMID- 23880864 OWN - NLM STAT- MEDLINE DCOM- 20140211 LR - 20211021 IS - 1422-0067 (Print) IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 14 IP - 7 DP - 2013 Jul 22 TI - Serum oxidant and antioxidant status following an all-out 21-km run in adolescent runners undergoing professional training--a one-year prospective trial. PG - 15167-78 LID - 10.3390/ijms140715167 [doi] AB - This study investigated the 1-year longitudinal effect of professional training in adolescent runners on redox balance during intense endurance exercise. Changes in selected serum oxidant and antioxidant status in response to a 21-km running time trial in 10 runners (15.5 +/- 1.3 years) undergoing professional training were evaluated twice in 12 months (pre- and post-evaluation). Venous blood samples were collected immediately before and 4-h following the 21-km run for analysis of serum concentrations of thiobarbituric acid-reactive substances (TBARS), xanthine oxidase (XO), catalase (CAT), reduced glutathione (GSH), superoxide dismutase (SOD), and total antioxidant capacity (T-AOC). In pre-evaluation trial, serum TBARS and SOD decreased after the 21-km run (p < 0.05) while XO, GSH, CAT and TAOC were unchanged. In post-evaluation trial, serum TBARS and SOD decreased, whereas XO and CAT increased post-exercise (p < 0.05). Furthermore, pre-exercise serum T-AOC, post-exercise serum XO, CAT, T-AOC (p < 0.05), and GSH (p = 0.057) appeared to be higher than the corresponding pre-evaluation values. The current findings suggest that a professional training regime in adolescent runners is not likely to jeopardize the development of their antioxidant defense. However, uncertainties in the maintenance of redox balance in runners facing increased exercise-induced oxidative stress as a consequence of training-induced enhancement of exercise capacity await further elucidation. FAU - Tong, Tom K AU - Tong TK AD - Dr. Stephen Hui Research Centre for Physical Recreation and Wellness, Department of Physical Education, Hong Kong Baptist University, Hong Kong, China. tongkk@hkbu.edu.hk FAU - Kong, Zhaowei AU - Kong Z FAU - Lin, Hua AU - Lin H FAU - Lippi, Giuseppe AU - Lippi G FAU - Zhang, Haifeng AU - Zhang H FAU - Nie, Jinlei AU - Nie J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130722 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Thiobarbituric Acid Reactive Substances) RN - EC 1.11.1.6 (Catalase) RN - EC 1.15.1.1 (Superoxide Dismutase) RN - EC 1.17.3.2 (Xanthine Oxidase) RN - GAN16C9B8O (Glutathione) SB - IM MH - Adolescent MH - Catalase/*blood MH - Glutathione/*blood MH - Humans MH - Longitudinal Studies MH - Prospective Studies MH - Running MH - Superoxide Dismutase/*blood MH - Thiobarbituric Acid Reactive Substances/*analysis MH - Time Factors MH - Xanthine Oxidase/*blood PMC - PMC3742293 EDAT- 2013/07/25 06:00 MHDA- 2014/02/12 06:00 PMCR- 2013/07/01 CRDT- 2013/07/25 06:00 PHST- 2013/06/06 00:00 [received] PHST- 2013/07/03 00:00 [revised] PHST- 2013/07/08 00:00 [accepted] PHST- 2013/07/25 06:00 [entrez] PHST- 2013/07/25 06:00 [pubmed] PHST- 2014/02/12 06:00 [medline] PHST- 2013/07/01 00:00 [pmc-release] AID - ijms140715167 [pii] AID - ijms-14-15167 [pii] AID - 10.3390/ijms140715167 [doi] PST - epublish SO - Int J Mol Sci. 2013 Jul 22;14(7):15167-78. doi: 10.3390/ijms140715167.