Oxidative stress biomarkers responses to physical overtraining: Implications for diagnosis
dc.creator | Margonis, K. | en |
dc.creator | Fatouros, I. G. | en |
dc.creator | Jamurtas, A. Z. | en |
dc.creator | Nikolaidis, M. G. | en |
dc.creator | Douroudos, I. | en |
dc.creator | Chatzinikolaou, A. | en |
dc.creator | Mitrakou, A. | en |
dc.creator | Mastorakos, G. | en |
dc.creator | Papassotiriou, I. | en |
dc.creator | Taxildaris, K. | en |
dc.creator | Kouretas, D. | en |
dc.date.accessioned | 2015-11-23T10:38:55Z | |
dc.date.available | 2015-11-23T10:38:55Z | |
dc.date.issued | 2007 | |
dc.identifier | 10.1016/j.freeradbiomed.2007.05.022 | |
dc.identifier.issn | 8915849 | |
dc.identifier.uri | http://hdl.handle.net/11615/30722 | |
dc.description.abstract | Overtraining syndrome is characterized by declining performance and transient inflammation following periods of severe training with major health implications for the athletes. Currently, there is no single diagnostic marker for overtraining. The present investigation examined the responses of oxidative stress biomarkers to a resistance training protocol of progressively increased and decreased volume/intensity. Twelve males (21.3 ± 2.3 years) participated in a 12-week resistance training consisting of five 3-week periods (T1, 2 tones/week; T2, 8 tones/week; T3, 14 tones/week; T4, 2 tones/week), followed by a 3-week period of complete rest. Blood/urine samples were collected at baseline and 96 h following the last training session of each period. Performance (strength, power, jumping ability) increased after T2 and declined thereafter, indicating an overtraining response. Overtraining (T3) induced sustained leukocytosis, an increase of urinary isoprostanes (7-fold), TBARS (56%), protein carbonyls (73%), catalase (96%), glutathione peroxidase, and oxidized glutathione (GSSG) (25%) and a decline of reduced glutathione (GSH) (31%), GSH/GSSG (56%), and total antioxidant capacity. Isoprostanes and GSH/GSSG were highly (r = 0.764-0.911) correlated with performance drop and training volume increase. In conclusion, overtraining induces a marked response of oxidative stress biomarkers which, in some cases, was proportional to training load, suggesting that they may serve as a tool for overtraining diagnosis. © 2007 Elsevier Inc. All rights reserved. | en |
dc.source.uri | http://www.scopus.com/inward/record.url?eid=2-s2.0-34547806238&partnerID=40&md5=f00fdddd01d608305e3e9db91e6b51b2 | |
dc.subject | Antioxidant status | en |
dc.subject | Overtraining | en |
dc.subject | Oxidative stress biomarkers | en |
dc.subject | Resistance exercise | en |
dc.subject | biological marker | en |
dc.subject | carbonyl derivative | en |
dc.subject | catalase | en |
dc.subject | glutathione | en |
dc.subject | glutathione disulfide | en |
dc.subject | glutathione peroxidase | en |
dc.subject | isoprostane | en |
dc.subject | thiobarbituric acid reactive substance | en |
dc.subject | adult | en |
dc.subject | article | en |
dc.subject | controlled study | en |
dc.subject | correlational study | en |
dc.subject | diagnostic procedure | en |
dc.subject | human | en |
dc.subject | human experiment | en |
dc.subject | leukocytosis | en |
dc.subject | male | en |
dc.subject | muscle injury | en |
dc.subject | overtraining syndrome | en |
dc.subject | oxidative stress | en |
dc.subject | priority journal | en |
dc.subject | Antioxidants | en |
dc.subject | Biological Markers | en |
dc.subject | Humans | en |
dc.subject | Leukocyte Count | en |
dc.subject | Muscle Fatigue | en |
dc.subject | Muscle, Skeletal | en |
dc.subject | Physical Endurance | en |
dc.title | Oxidative stress biomarkers responses to physical overtraining: Implications for diagnosis | en |
dc.type | journalArticle | en |
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