n International SportMed Journal - Oxidative stress response to isometric exercise in women : effect of age and exercise intensity : original research article
|Article Title||Oxidative stress response to isometric exercise in women : effect of age and exercise intensity : original research article|
|© Publisher:||International Federation of Sports Medicine|
|Journal||International SportMed Journal|
|Affiliations||1 University of Zaragoza, Spain, 2 European University Miguel de Cervantes, Spain, 3 Hospital of Leon, Spain, 4 Hospital of Leon, Spain and 5 Hospital of Leon, Spain|
|Publication Date||Sep 2012|
|Pages||85 - 95|
|Keyword(s)||Age, Exercise intensity, Glutathione, Isometric exercise and Oxidative stress|
Objective: The effects of exercise intensity and age on oxidative stress induced by isometric exercise were investigated. Methods: Sixteen women (8 old: O, and 8 young: Y) performed two isometric protocols (30% and 50% maximal voluntary isometric contraction, MVIC). Results: Blood lactate changed significantly from immediately after to 10-min post-exercise in group Y at both intensities. Values differed significantly between Y and O groups only at 1-min post-exercise at 30% and 50% MVIC. No significant changes occurred in thiobarbituric reactants or reduced ascorbic acid. The oxidised/reduced glutathione ratio increased significantly from 1-min to 10-min post-exercise in both groups at 50% MVIC, and at 30% MVIC in group Y. Values increased significantly from 3-min to 10-min post-exercise in group O at 30% MVIC. Conclusions: Exercise intensity and age had no significant effect on oxidative stress response after wrist-flexor isometric exercise, and the glutathione system could provide a sufficient defence against oxidative damage.
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