By Andreas Zourdos
Dietary antioxidants have gathered the interest of many scientific studies. A quite long term study presented on the Medicine and Science in Sports and Execise journal by Yfanti and colleagues (2010) studied the effects of supplemental vitamin C and E. The study concluded that vitamin C and E did not benefit high intensity aerobic exercise and did not influence metabolic or physiologic variables. This study was conducted with muscle biopsies and had a double blind placebo controlled protocol.
Ristaw and colleagues (2009) studied the effects of 1000mg of vitamin C and 400 IU of vitamin E and observed that they prevented an up-regulation of insulin sensitivity due to physical exercise.Blomer (2010) and colleagues studied the supplementation of these two vitamins on weightlifters. He observed that they did not protect against muscle injury or oxidative stress.
My opinion: the antioxidant craze is something far from new for those into fitness. Rarely do most fitness enthusiasts are informed by fitness magazines for the fact there are naturally occurring antioxidants such as peroxidase dismutase and glutathione peroxidase that are increased with exercise ( I have the notion that this something to with money coming from the supplement companies). This does not mean that the story on exogenous antioxidants is over, but it means one should be less enthusiastic when in it comes to advertisements of vitamins claiming they promote health or performance .
Bibliography
Yfanti C., et al, (2010).Antioxidant Supplementation does not alter endurance training adaptation. Medicine&Science in Sport&Exercise
Ristaw, et al. ( 2009). Antioxidants prevent health-promoting effects of physical exercise in humans.Proceedings of the National Academy of the National Academy of Sciences of the United States of America
Blomer , et al.(2010). Prior exercise and antioxidant supplementation: effect on oxidative
stress and muscle injury. Journal of the International Society of Sports Nutrition.
Ristaw and colleagues (2009) studied the effects of 1000mg of vitamin C and 400 IU of vitamin E and observed that they prevented an up-regulation of insulin sensitivity due to physical exercise.Blomer (2010) and colleagues studied the supplementation of these two vitamins on weightlifters. He observed that they did not protect against muscle injury or oxidative stress.
My opinion: the antioxidant craze is something far from new for those into fitness. Rarely do most fitness enthusiasts are informed by fitness magazines for the fact there are naturally occurring antioxidants such as peroxidase dismutase and glutathione peroxidase that are increased with exercise ( I have the notion that this something to with money coming from the supplement companies). This does not mean that the story on exogenous antioxidants is over, but it means one should be less enthusiastic when in it comes to advertisements of vitamins claiming they promote health or performance .
Bibliography
Yfanti C., et al, (2010).Antioxidant Supplementation does not alter endurance training adaptation. Medicine&Science in Sport&Exercise
Ristaw, et al. ( 2009). Antioxidants prevent health-promoting effects of physical exercise in humans.Proceedings of the National Academy of the National Academy of Sciences of the United States of America
Blomer , et al.(2010). Prior exercise and antioxidant supplementation: effect on oxidative
stress and muscle injury. Journal of the International Society of Sports Nutrition.
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