Cited by 844Exercise and Physiological ResponsesVitamin C and Antioxidants ResearchMuscle metabolism and nutrition

Oral administration of vitamin C decreases muscle mitochondrial biogenesis and hampers training-induced adaptations in endurance performance

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Gomez-Cabrera, Mari-Carmen, Domenech, Elena, Romagnoli, Marco, Arduini, Alessandro, Borras, Consuelo, Pallardo, Federico V, Sastre, Juan, Viña, Jose·2008·The American Journal of Clinical Nutrition

Abstract

Background Exercise practitioners often take vitamin C supplements because intense muscular contractile activity can result in oxidative stress, as indicated by altered muscle and blood glutathione concentrations and increases in protein, DNA, and lipid peroxidation. There is, however, considerable debate regarding the beneficial health effects of vitamin C supplementation.Objective This study was designed to study the effect of vitamin C on training efficiency in rats and in humans.Design The human study was double-blind and randomized. Fourteen men (27-36 y old) were trained for 8 wk. Five of the men were supplemented daily with an oral dose of 1 g vitamin C. In the animal study, 24 male Wistar rats were exercised under 2 different protocols for 3 and 6 wk. Twelve of the rats were treated with a daily dose of vitamin C (0.24 mg/cm2 body surface area).Results The administration of vitamin C significantly (P=0.014) hampered endurance capacity. The adverse effects of vitamin C may result from its capacity to reduce the exercise-induced expression of key transcription factors involved in mitochondrial biogenesis. These factors are peroxisome proliferator-activated receptor co-activator 1, nuclear respiratory factor 1, and mitochondrial transcription factor A. Vitamin C also prevented the exercise-induced expression of cytochrome C (a marker of mitochondrial content) and of the antioxidant enzymes superoxide dismutase and glutathione peroxidase.Conclusion Vitamin C supplementation decreases training efficiency because it prevents some cellular adaptations to exercise.

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Crossref · 10.1093/ajcn/87.1.142

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  • Antioxidant supplements or the deletion of NFE2L2 can block acute exercise-induced increases in PGC1α and mitochondrial biogenesis.

    “Previous studies have shown that antioxidant supplements or the deletion of NFE2L2 can block acute exercise–induced increases in PGC1α and mitochondrial biogenesis (5–7).”
  • ROS show insulin-like effects, stimulating skeletal muscle glucose uptake during muscle contraction via the activation of AMPK and the induction of PGC-1α expression in vitro and in vivo.

    “ROS show insulin-like effects, stimulating SkM glucose uptake during muscle contraction *via* the activation of AMPK ([81](#B81)) and the induction of PGC-1α expression *in vitro* and *in vivo* ([57](#B57), [79](#B79)).”

    From Mitochondrial fatty acid oxidation in obesity (2013) · cites this paper as [57]

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Authors
Gomez-Cabrera, M.-C., Domenech, E., Romagnoli, M., Arduini, A., Borras, C., Pallardo, F. V., Sastre, J., & Viña, J.
Affiliations
Universitat de València (ES)
Venue
The American Journal of Clinical Nutrition
Publisher
Elsevier BV
Published
2008-01
Volume
87
Issue
1
Pages
142-149
ISSN
0002-9165 (ISSN-L)
OpenAlex
W2138786739
Cited by
844
References
40
Citations by year
2026: 35 · 2025: 33 · 2024: 26 · 2023: 29 · 2022: 50 · 2021: 54 · 2020: 39 · 2019: 61 · 2018: 39 · 2017: 46 · 2016: 52 · 2015: 66 · 2014: 87 · 2013: 52 · 2012: 47
FWCI
45.58
Type
journal article
Language
en
Open access
Locations
  • American Journal of Clinical Nutrition (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
  • Health Sciences › Nursing › Nutrition and Dietetics › Vitamin C and Antioxidants Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
Keywords
vitamin C supplementation, mitochondrial biogenesis, endurance performance, training effects, oxidative stress, PPAR-gamma coactivator 1, NRF1, TFAM, cytochrome c, superoxide dismutase, glutathione peroxidase, antioxidant enzymes
MeSH terms
Adaptation, Physiological, Administration, Oral, Adult, Animals, Antioxidants, Ascorbic Acid, DNA-Binding Proteins, Double-Blind Method, Humans, Male, Mitochondria, Muscle, Oxygen Consumption, Physical Endurance, Transcription Factors, Rats, Wistar, Reactive Oxygen Species, Oxidative Stress, Cross-Over Studies, Dietary Supplements, Mitochondrial Proteins, Peroxisome Proliferator-Activated Receptors, Nuclear Respiratory Factor 1, Rats

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