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Randomized Controlled Trial
. 2012 Oct;22(10):907-13.
doi: 10.1016/j.numecd.2011.03.002. Epub 2011 Jul 22.

Vitamin E differentially affects short term exercise induced changes in oxidative stress, lipids, and inflammatory markers

M Garelnabi  1 , E Veledar, J White-Welkley, N Santanam, J Abramson, W Weintraub, S Parthasarathy
Affiliations
Randomized Controlled Trial

Vitamin E differentially affects short term exercise induced changes in oxidative stress, lipids, and inflammatory markers

M Garelnabi et al. Nutr Metab Cardiovasc Dis. 2012 Oct.

Abstract

Background and aim: Physical activity or exercise is a proven deterrent of cardiovascular diseases. The purpose of this study was to examine whether vitamin E supplementation interfere with the potential benefits of exercise.

Methods and results: A total of 455 apparently healthy men and women were recruited, for a 2-month aerobic/cardiovascular exercise program. Subjects were randomly assigned for soft gel vitamin E or placebo (800 IU), and required to give blood at 0, 2, 4 and 8 weeks of exercise. Levels of lipid and markers of oxidative stress and inflammation were measured along with the VO2 and duration time spent on treadmill. Statistical analysis did not show significant changes in the levels of lipids and markers of oxidative stress and inflammation. Favorable trends among both of the randomization groups were observed in lipids, and some of the oxidative stress and inflammatory markers. This study also established several interesting correlations between VO2, and lipids on one hand and markers of oxidation and inflammation on the other hand. Reduction in LDL levels positively associated with increased levels of MCP-1 (P < 0.008) among placebo group, and also decreased hCRP levels strongly correlated with the increases in VO2 (P < 0.0004) among the placebo, and vitamin E subjects (P < 0.01).

Conclusions: Exercise training induces oxidative stress might be instrumental in favorable lipid reduction and markers of oxidative stress and inflammation. However interestingly, vitamin E didn't demonstrate favorable effects on the level of oxidative stress and inflammation associated with exercise.

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