Antioxidant status, oxidative stress, and damage in elite kayakers after 1 year of training and competition in 2 seasons

Teixeira, Vitor; Valente, Hugo; Casal, Susana; Pereira, Laura; Marques, Franklim; Moreira, Pedro
August 2009
Applied Physiology, Nutrition & Metabolism;Aug2009, Vol. 34 Issue 4, p716
Academic Journal
The large volume of training performed by elite athletes throughout the season can translate into a chronic oxidative insult. To study the effects that chronically high training loads have on athletes’ redox status, superoxide dismutase (SOD), glutathione reductase, glutathione peroxidase (GPx), and creatine kinase activities; total antioxidant status (TAS); and uric acid, retinol, α-tocopherol, α-carotene, β-carotene, lycopene, lutein + zeaxanthin, vitamin C, thiobarbituric acid reactive substances (TBARS), interleukin-6, and cortisol levels were determined in 9 kayakers (6 men) in a competitive period during the first season (June, T1), and in precompetitive (March, T2) and competitive (June, T3) periods during the following season. TAS decreased from the first to the second season (T1 vs. T2, p < 0.001; T1 vs. T3, p < 0.001). TBARS (p = 0.024) decreased from T1 to T2. The α-tocopherol increase (p = 0.001) from T1 to T2 lost statistical significance after adjustment for total lipids (p = 0.243). GPx (p = 0.003) increased, while SOD (p < 0.001) and uric acid (p = 0.032) decreased from T2 to T3. Cortisol levels decreased significantly throughout the study (T1 vs. T2, p = 0.042; T2 vs. T3, p = 0.018; T1 vs. T3, p = 0.002). No significant differences were observed for any of the other parameters studied. Antioxidant status changed more within the same season than from one season to another. Redox markers should be monitored throughout the season to detect athletes at an increased oxidative risk.


Related Articles

  • The Upper Limit of Physiological Cardiac Hypertrophy in Elite Male Athletes. Al Hnidawei, Mohammad; MjallI, Majed; Zayed, Ziad // American Journal of Applied Sciences;2010, Vol. 7 Issue 10, p1327 

    Problem statement: Establishment of upper normal limits of physiological hypertrophy in response to physical training is important in the differentiation of physiological and pathological left ventricular hypertrophy. The goal of our study was to investigate the normal upper limits of cardiac...

  • Strength and endurance training does not lead to changes in major markers of oxidative stress.  // HealthMed;2011, Vol. 5 Issue 3, p616 

    No abstract available.

  • BIOCHEMICAL CHANGES AND ENDOCRINE RESPONSES IN PRE-COMPETITION TRAINING IN ELITE SWIMMERS. Li, Y.; Zhu, Y.; Zhang, J.; Zhang, X.; Zeng, Y. // Biology of Sport;2012, Vol. 29 Issue 1, p71 

    The aim of this study was to describe biochemical changes and endocrine responses to low-volume pre-competition swimming training for elite swimmers. Twelve sprint swimmers (6 males and 6 females) participated in 3-week pre-competition training. Measures of velocity anaerobic threshold (VAT),...

  • Effect of Training on the serum creatine Kinase (CK) levels of Athletes. Anugweje, K. C.; Okonko, I. O. // Nature & Science;2012, Vol. 10 Issue 9, p180 

    The effect of training on the serum creatine kinase levels of athletes was evaluated clinically. Study was conducted in 46 highly-trained athletes. The collective results indicate that training has effect on the serum creatine kinase. The study showed that there was significant difference...

  • Analysis of creatine kinase and alpha-actin concentrations in soccer pre-season. Pimenta, Eduardo; Barbosa Coelho, Daniel; Capettini, Luciano; Gomes, Thales; Pussieldi, Guilherme; Ribeiro, Jose; Gomes-Filho, Ary; Silami-Garcia, Emerson // Revista Brasileira de Ciência e Movimento: RBCM;2015, Vol. 23 Issue 4, p5 

    Purpose: The purpose of the present study was to assess muscle overload through changes in creatine kinase (CK) activity and serum concentration of α-actin in soccer players in response of two months of pre-season physical training. Basic procedures: Ten professional athletes (26 ± 6 years...

  • Resposta de duas sessões de natação sobre parâmetros de estresse oxidativo em nadadores. da Silva, Luciano Acordi; da Rocha, Luis Gustavo Costa; Scheffer, Débora; Soares, Fernanda Schrveizer; Pinho, Cleber Aurino; Polizelli, Adriano B.; Silveira, Paulo Cesar Lock; Pinho, Ricardo Aurino // Brazilian Journal of Kineanthropometry & Human Performance;2009, Vol. 11 Issue 2, p160 

    The article presents a research on the acute effects of two swimming sessions on oxidative stress markers in trained individuals. It states the blood samples were gathered and determined creatine kinase (CK) activity, lipid peroxidation level, protein carbonylation, thiol content and catalase...

  • Protein carbonyl levels correlate with performance in elite field hockey players. Rosa-Lima, Frederico Luis; Lannes, Luiz; Viana-Gomes, Diego; Pierucci, Anna Paola T.R.; Salerno, Verônica P. // Applied Physiology, Nutrition & Metabolism;Jul2015, Vol. 40 Issue 7, p683 

    Excess and incorrectly selected exercise can degrade athletic performance from an imbalance in redox homeostasis and oxidative stress, but well-planned training and nutrition can improve antioxidant capacity. The aim of the study was to investigate how nutrient intake could influence oxidative...

  • Explosivkraftniveau der unteren Extremitaten bei Schweizer Nachwuchsathleten. Hübner, Klaus; Sonderegger, Karin; Lüthy, Fabian; Tschopp, Markus // Schweizerische Zeitschrift für Sportmedizin & Sporttraumatologi;2013, Vol. 61 Issue 4, p15 

    In many sports the importance of explosive strength as performance predictor in fast acyclic and cyclic movements has grown. Explosive strength testing is used already in young athletes to optimize the physical training in a long-term performance development process. Age and sport specific...

  • Recovery Antagonized Training at the 2014 Meeting of the American College of Sports Medicine. Burke, Louise M.; Martin, David T.; Pearce, Jeni; Hopkins, Will G. // Sportscience;2014, Vol. 18, p8 

    Nutrition Report with Louise Burke: GSSI symposium; PINES special event. Nutrition Reflections with Jeni Pearce. Performance Highlights with Dave Martin. Noteworthy Abstracts with Will Hopkins. Acute Effects: warm-ups. Correlates of Performance: genes. Nutrition and Drugs: acute supplementation...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics