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The Effect of Progressive Resistance Training on Oxidative Stress and Erythrocyte Antioxidant Enzymes Activity in Untrained Males.
MedLine Citation:
PMID:  23239675     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
This study was undertaken to investigate the effects of progressive resistance training exercise (PRT) on plasma oxidative stress and antioxidant enzyme activity in erythrocytes. Twenty male volunteers were randomly assigned to two groups; progressive resistance training and control. Blood samples were collected before and after eight weeks of PRT, and analyzed for enzymatic activities of superoxide dismutase (SOD) and glutathione peroxidase (GPx) in erythrocytes, plasma total antioxidant capacity (TAC) and malondialdehyde concentration (MDA, an index of lipid per oxidation in plasma). Resistance training commenced with eight exercises on non-consecutive days for eight weeks at 50% estimated one maximal repetition (E1RM) and reached 80% E1RM by week eight. The results showed that PRT significantly increased erythrocyte SOD activity (1323±212.52 VS 1449.9±173.8 U/gHb, P=0.014). Plasma concentration of MDA also decreased (5.39±1.7 VS 3.67.4±0.7 nmol/ml, P=0.030), though TAC (1.42±0.21 VS 1.61±0.19 mmol/l, P=0.1530), and GPx (39.87±11.5 VS 48.18±14.48 U/gHb, P=0.883) activity did not undergo any considerable changes. Based on these data, we conclude that an eight week program of PRT strengthens the defensive system of erythrocytes against free radical damage and therefore can be applied as a useful approach for alleviation of oxidative stress.
Authors:
Kamal Azizbeigi; Mohammad Ali Azarbayjani; Maghsoud Peeri; Hamid Agha-Alinejad; Stephen Stannard
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-7
Journal Detail:
Title:  International journal of sport nutrition and exercise metabolism     Volume:  -     ISSN:  1543-2742     ISO Abbreviation:  Int J Sport Nutr Exerc Metab     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-12-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100939812     Medline TA:  Int J Sport Nutr Exerc Metab     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Exercise Physiology, Islamic Azad University, Tehran Central Branch, Tehran, Islamic Republic of Iran.
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