Effect of maximal versus supra-maximal exhausting race on lipid peroxidation, antioxidant activity and muscle-damage biomarkers in long-distance and middle-distance runners
(Auswirkung eines maximalen vs. eines supramaximalen Rennens bis zur Erschöpfung auf Lipidperoxidation, Antioxidanzienaktivität und Biomarker der Muskelschädigung bei Lang- und Mittelstreckenläufern)
Background: Exhausting physical exercise increases lipid peroxidation and causes important muscle damages. The human body tries to mitigate these adverse effects by mobilizing its antioxidant defenses.
Objectives: This study aims to investigate the effect of a maximal versus supra-maximal race sustained until exhaustion on lipid peroxidation, antioxidant activity and muscle-damage biomarkers in trained (i.e. long-distance and middle-distance runners) and sedentary subjects.
Materials and Methods: The study has been carried out on 8 middle-distance runners (MDR), 9 long-distance runners (LDR), and 8 sedentary subjects (SS). Each subject has undergone two exhaustive running tests, the first one is an incremental event (VAMEVAL test), the second one is a constant supra-maximal intensity test (limited-time test). Blood samples were collected at rest and immediately after each test.
Results: A significant increase in malondialdehyde (MDA) concentrations was observed in SS and MDR after the VAMEVAL test and in LDR after the Limited-Time test. A significant difference was also observed between LDR and the other two groups after the VAMEVAL test, and between LDR and MDR after the Limited-Time test. Significant modifications, notably, in myoglobin, CK, LDH, IL-6, TNF-a, and TAS were likewise noted but depending on the race-type and the sportive specialty.
Conclusions: Maximal and supra-maximal races induce a significant increase in lipid peroxidation and cause non-negligible inflammation and muscle damage. These effects were relatively related to the physical exercise type and the sportive specialty.
© Copyright 2016 Asian Journal of Sports Medicine. Tehran University of Medical Sciences, Sports Medicine Research Center. Alle Rechte vorbehalten.
Schlagworte: | Mittelstreckenlauf Langstreckenlauf Biochemie Sportphysiologie Antioxidans Muskelphysiologie Fett |
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Notationen: | Biowissenschaften und Sportmedizin Ausdauersportarten |
DOI: | 10.5812/asjsm.27902 |
Veröffentlicht in: | Asian Journal of Sports Medicine |
Veröffentlicht: |
2016
|
Jahrgang: | 7 |
Heft: | 1 |
Seiten: | e27902 |
Dokumentenarten: | Artikel |
Sprache: | Englisch |
Level: | hoch |