The Claim
Daily supplementation with 500 mg/kg of vitamin C for three weeks significantly reduces exercise-induced increases in mitochondrial protein synthesis in the soleus and plantaris skeletal muscles of adult male Sprague-Dawley rats undergoing voluntary endurance exercise.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In adult male Sprague-Dawley rats that run voluntarily, taking 500 mg/kg of vitamin C daily for three weeks reduces the increase in mitochondrial protein synthesis that normally occurs in soleus and plantaris muscles after exercise.
See the scientific wording
In adult male Sprague-Dawley rats undergoing voluntary endurance exercise, daily supplementation with 500 mg/kg of vitamin C for three weeks significantly blunts exercise-induced increases in mitochondrial protein synthesis in both soleus and plantaris skeletal muscles, suggesting exogenous antioxidant intake may interfere with key cellular adaptations to aerobic training.
When muscles work hard, they produce hydrogen peroxide and other molecules that act as signals to build more energy-producing parts inside cells. Vitamin C removes these signals before they can trigger the building process, so the muscles make fewer new energy-producing parts even after exercise.
What the research says
1 studyStudy: Differential effects of vitamin C or protandim on skeletal muscle adaptation to exercise.
When rats ran a lot and took a high dose of vitamin C, their muscles made fewer new energy-producing parts (mitochondria) than rats that ran without the vitamin. This suggests vitamin C might stop the body from getting the full benefits of exercise.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.