Home > Journals > The Journal of Sports Medicine and Physical Fitness > Past Issues > The Journal of Sports Medicine and Physical Fitness 2018 December;58(12): > The Journal of Sports Medicine and Physical Fitness 2018 December;58(12):1713-9

CURRENT ISSUE
 

JOURNAL TOOLS

eTOC
To subscribe
Submit an article
Recommend to your librarian
 

ARTICLE TOOLS

Publication history
Reprints
Permissions
Cite this article as

 

ORIGINAL ARTICLE  EXERCISE PHYSIOLOGY AND BIOMECHANICS 

The Journal of Sports Medicine and Physical Fitness 2018 December;58(12):1713-9

DOI: 10.23736/S0022-4707.17.07887-2

Copyright © 2017 EDIZIONI MINERVA MEDICA

language: English

Oxidative stress, lipid peroxidation indexes and antioxidant vitamins in long and middle distance athletes during a sport season

Diego MUÑOZ MARÍN 1 , Gema BARRIENTOS 2, Javier ALVES 2, Francisco J. GRIJOTA 2, Maria C. ROBLES 1, Marcos MAYNAR 1

1 Department of Physiology, Faculty of Sports Science, University of Extremadura, Cáceres, Spain; 2 Department of Sport Science, Faculty of Education, Pontifical University of Salamanca, Salamanca, Spain



BACKGROUND: The main objective of this study was to observe any changes and possible adaptations produced in MDA and antioxidants vitamins on plasma and erythrocytes in endurance male athletes among an athletic season (12 months).
METHODS: Twenty three long and middle distance male athletes participated in this study. Basal MDA on plasma and antioxidant vitamins in plasma and erythrocytes were measured at four moments along the season (0, 3, 6 and 9 months). Fatty acid concentrations in erythrocytes were obtained to determine lipid peroxidation indexes.
RESULTS: In plasma, vitamin C suffered significant decreases at 3 and 6 months compared with the begin (P<0.01), and an increase at 9 months, compared with 3 months. On the other hand, vitamin A level was significantly lower at 9 months compared with the other periods (P<0.01 compared with 0 and 6 months; P<0.05 compared with 3 months). In erythrocytes, significant decreases were observed in vitamin E among the season at 6 months and an increase from 6 to 9 months (P<0.05). Vitamin A suffers a significant decrease in both for competitive periods, at 3 and 9 months, compared with the beginning of the season. The most of changes in lipid peroxidation indexes were produced along the firsts 3 months.
CONCLUSIONS: 1) Physical training improves the antioxidant systems in order to reduce lipid peroxidation in trained athletes along the season; 2) PUFA/SFA ratios seem more reliable than MDA to observe oxidative stress.


KEY WORDS: Malondialdehyde - Ascorbic acid - Vitamin E - Plasma - Fatty acids

top of page