1. Thirteen days of "live high-train low" does not affect prooxidant/antioxidant balance in elite swimmers.
- Author
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Pialoux, Vincent, Mounier, Rémi, Brugniaux, Julien, Rock, Edmond, Mazur, Andrzej, Richalet, Jean-Paul, Robach, Paul, Coudert, Jean, Fellmann, Nicole, Mounier, Rémi, and Brugniaux, Julien V
- Subjects
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ANTIOXIDANTS , *ENDURANCE athletes , *SWIMMING associations , *LIPIDS , *PHYSIOLOGICAL adaptation , *ALTITUDES , *BIOCHEMISTRY , *COMPARATIVE studies , *EXERCISE , *PHENOMENOLOGY , *RESEARCH methodology , *MEDICAL cooperation , *PHYSICAL fitness , *RESEARCH , *SWIMMING , *EVALUATION research , *OXYGEN consumption , *PHYSIOLOGY - Abstract
We investigated the impact of 13 days of "living high-training low" (LHTL) on the antioxidant/prooxidant balance in elite endurance swimmers. Eighteen elite swimmers from the French Swimming Federation were submitted to a 13-day endurance training and divided into two groups: one group trained at 1,200 m and lived in hypoxia (2,500-3,000 m simulated altitude) and the second group trained and lived at 1,200 m. The subjects performed an acute hypoxic test (10 min at 4,800 m) before and 1 day after the training period. Plasma levels of advanced oxidation protein products (AOPP), malondialdehydes (MDA), ferric reducing antioxidant power (FRAP), and lipid-soluble antioxidants were measured before and after the 4,800 m tests. After the training, MDA and AOPP responses to the 4,800 m test were lower than before training for both groups (+10 vs. +2%; P = 0.01 for MDA and +80 vs. +14%; P = 0.01 for AOPP). Thirteen days of LHTL did not modify antioxidant status (FRAP and lipid-soluble antioxidants) despite intakes in vitamins A and E below the recommended daily allowances. The LHTL did not affect the antioxidant status in elite swimmers; however, the normoxic endurance training induced preconditioning mechanisms in response to the 4,800 m test. [ABSTRACT FROM AUTHOR]
- Published
- 2009
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