Present in the wine red, grapes, blueberries or even peanuts, resveratrol is now a food supplement antioxidant widespread. And for good reason, it would have many health benefits, and protect against cancerheart problems, acne or even heart disease.Alzheimer’s.
However, a new Canadian study published in the scientific journal Applied Physiology, Nutrition & Metabolism, suggests that this supplement would be a brake on physical performance.
Intense physical training
The study was conducted on 16 men, with an average age of 22, practicing at least 3 hours of physical exercise per week at registration. The latter have committed to practicing physical training by high intensity interval 3 times a week for 4 weeks. The training consisted of performing intense physical activity, such as running, alternating between periods of exercise and a period of rest.
Two groups were randomly formed: the first received daily doses of resveratrol (150 mg per dose), while the other was given a placebo. The experiment was conducted double-blind: neither the participants nor the researchers knew what the nature of each person’s prescription was.
Before and after each workout, scientists assessed participants’ physical improvements through muscle biopsy, a test of maximum energy consumption.oxygen or even a Wingate test (measurement of pedaling compared to braking).
No physical improvement when taking resveratrol
After 4 weeks of training, the evaluation of the participants shows that the physical abilities of the people subjected to resveratrol as a supplement have not improved. In contrast, the placebo control group experienced an increase in the expression of the SOD2 gene, which is linked to the protection of the heart duringphysical exercise.
“Our results suggest that physical training and resveratrol supplementation can alter the body’s response induced by intensive sport, comments Dr. Gurd, professor at the School of Kinesiology at Queens University in Kingston (Canada), and author principal of the study.
The data set in this study clearly shows that resveratrol supplementation does not increase the benefits of sport, and can even decrease its effects on our body. »
The team of Dr. Gurd specifies all the same that other studies proving this negative effect will be required to confirm these results.