Antioxidants & Recovery

topic

Exercise generates reactive oxygen species (ROS) that serve as signaling molecules activating the adaptive responses (mitochondrial biogenesis, antioxidant enzyme upregulation, satellite cell activation) that make training beneficial — creating the paradox that high-dose antioxidant supplementation during training may blunt these ROS-dependent adaptation signals, potentially reducing training adaptations despite reducing post-exercise oxidative stress. Whole-food antioxidants at culinary doses support recovery without the adaptation-blunting concern associated with pharmacological antioxidant supplementation.

Role

The antioxidant-exercise adaptation interaction is one of the most counterintuitive findings in sports nutrition — with high-dose vitamin C and E supplementation during training consistently reducing training-induced mitochondrial adaptation and muscle protein synthesis in multiple human trials, suggesting that the conventional wisdom of antioxidant supplementation for exercise recovery may be actively undermining the goals it is intended to support. The practical implication is the opposite of common practice: whole-food antioxidants from colorful vegetables and fruits support recovery appropriately, while megadose vitamin C and E supplementation during intense training phases may interfere with the oxidative stress signals necessary for adaptation.

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