Many people take vitamin regimen as part of their daily fitness , after hearing that antioxidants help physical recovery and strengthening . But the impact of training in another example of science underestimating entrenched assumptions , some new experiments showed that antioxidant supplementation can actually reduce the benefits of the training .
Antioxidants become a popular food supplement mainly because they are said to sop free radicals , highly reactive oxygen molecules produced during daily activities . Physical force by sharing oxygen results in the formation of a large number of these molecules , which then can lead to cell death and tissue damage . It seems logical that if a reduction in the amount of free radicals generated by the business will be desirable .
Perform an antioxidant , which absorb and deactivate free radicals . While the body creates its own antioxidants , until now , many researchers believe that we produce enough natural antioxidants to the looting of the free radicals produced during exercise counter . So many people who exercise started downing large doses of antioxidants such as vitamins C and E , although some trials in humans have been thoroughly checked . Precise physiological effects of antioxidant supplements on working people
For a study published last week in The Journal of Physiology , researchers at the Norwegian School of Sport Sciences , Oslo and other institutions gathered 54 healthy men and women , most of them recreational runners and cyclists , and perform a series of tests , including biopsy muscle , blood draws , and treadmill running to base their stamina and health of their muscle cells to determine .
Then they divided the volunteers into two groups . Those in the group took four pills every day , to give a total dose of 1000 mg vitamin C and 235 mg of vitamin E. The members of the second group received a placebo pill the same .
Finally , they asked all the participants to a powerful 11 – a full week training program , consisting of increasingly intense interval sessions once or twice a week , along with two weekly sessions were paced hour – long runs . End , all the volunteers who are more fit than starting their maximum durability with an average of about 8 percent .
But their bodies are very different reactions to the training . The runner who had swallowed a placebo pill , have a high rise in biochemical markers known in the creation of mitochondria , tiny structures within cells that produce energy swans , the cells in their blood and muscles . Mitochondria more , especially in muscle cells , means more energy and , by and large , better health and fitness . The creation of new mitochondria actually supposed to be one of the most important effects of exercise . general
However , volunteers who consumed antioxidants creates a significantly lower rate of mitochondrial markers . The researchers did not actually calculate certain populations of mitochondria in muscle cells of their volunteers , but may , from time to time , they will be antioxidants smaller increase in mitochondrial density than those not taking them to see .
These findings reflect the results of other studies of antioxidant supplements and exercise , also published last year in The Journal of Physiology , in which half of a group of men older fell 250 milligrams per day of resveratrol supplements , antioxidants famous red wine , and the other half a placebo . After two months of training , those who received the placebo showed a significant and positive changes in blood pressure , their cholesterol profiles and arteries , the arteries of plaque is less clear .
People who are not so fortunate resveratrol . They have so much as the others do , but their blood pressure , cholesterol and arterial stubbornly remained virtually unchanged .
Why and how antioxidant supplements would be the effect of exercise stub is not entirely clear , Goran said Paulsen , a researcher at the Norwegian School of Sport Sciences , who led the vitamin C and E studies . But he and many other physiological had begun to suspect that free radicals may play during and after exercise than previously thought different roles .
In this theory , free radicals are not evil , but it serves as a messenger , invite genes and other body systems in initiating various biochemical reactions that end up with stronger muscles and improved metabolic health . Without free radicals , this reaction does not start .
Large doses of supplements and anti – oxidants absorb most of the free radicals generated by exercise .
Of course , this theory is not yet proven and long-term testing on humans is needed , said Dr. Paulsen . It is possible , that is to say a smaller dose might be . Antioxidants or different formulations which are useful for athletes Meanwhile , natural antioxidants from food sources , such as blueberries and red wine , may not be a problem , he said . ” It’s probably just a concentrated extract potentially dangerous , ” he said . It is also noted that volunteers are concentrated extracts of vitamin C and E have increased their endurance at the same rate as those who took a placebo .
On the other hand , the supplement did not improve compared with placebo , performance , so why bother with them , ask Dr. Paulsen . ” Personally , I would avoid high doses ” of antioxidants during training , he said . Science on the subject can not be complete , but the appointment of the new study is that by beating supplements , ” you risk losing some of the benefits of exercise . “