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Med Sci Sports Exerc. 2002 May;34(5):814-9.

Relationship between physical activity and oxidative stress biomarkers in women.

Author information

1
Unitat de Lípids i Epidemiologia Cardiovascular, Institut Municipal de Investigació Mèdica, IMIM, Barcelona, Spain. mcovas@imim.es

Abstract

PURPOSE:

To examine the relationship between physical activity and levels of plasma lipid peroxides, superoxide dismutase in erythrocytes (SOD), and glutathione peroxidase (GSH-Px) in whole blood activities.

METHODS:

Cross-sectional study in 488 Spanish women. Two categories of leisure time physical activity were defined according to their intensity: low (<or=6 METs) and high (>6 METs). Energy expenditure in household activities was also recorded. Multivariate linear regression analyses were used to adjust for the effect of physical activity on lipid peroxides and SOD and GSH-Px for confounding variables.

RESULTS:

The amount of leisure time physical activity was associated with high activity levels of SOD (P = 0.022) and GSH-Px (P = 0.002). Similar results were obtained when physical activity in household activities was added to total leisure physical activity. Physical activity of low intensity was associated with high SOD activity levels (P = 0.002) and that of high intensity with high GSH-Px activity levels (P = 0.001).

CONCLUSION:

The amount and intensity of leisure physical activity were directly related to both antioxidant enzyme activity levels. The findings of this study suggest a modulatory effect of leisure physical activity intensity on antioxidative balance in the studied female population.

[Indexed for MEDLINE]

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