I did that couple of years ago

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It helps to be skeptical even of the skeptics and be symmetrical in what evidence is required both for and against.

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This meta-analysis seems to indicate no effect, positive or negative for vitamin c and e supplementation and strength or hypertrophy training.

Regarding the effects of antioxidant supplementation on strength gains, six studies reported data and the results of four of them [28, 30, 34, 35] indicate that vitamin supplementation has no influence on strength gain. Within these six studies, meta-analysis was done with the three studies that employed isokinetic assessment of muscle strength [3335]. Results of the meta-analysis confirmed that supplementation is innocuous regarding this outcome (Figure 2). In other words, vitamin supplementation was neither positive nor negative.

Two studies analyzed muscle mass adaptations in young men and women, and they found no effects of supplementation.

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