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quercetin benefits
Why Eating Lots of Apples Is Kind of Like Exercising
Substance found in red onions and apples seems to boost endurance, but don’t throw away your gym shorts yet.
By Leah Zerbe
Topics: antioxidants
Don’t trade in physical activity for a pill, but consider boosting your endurance with this antioxidant.
A substance in berries may give you energy--but you'll have to eat more than one.
RODALE NEWS, EMMAUS, PA—Researchers have found that quercetin, an antioxidant available as a supplement and also found in certain vegetables and fruits, increased people’s endurance and boosted their aerobic capacity, even if they weren't exercising. The results are published today in the peer-reviewed journal International Journal of Sport Nutrition and Exercise Metabolism.
THE DETAILS: Quercetin, a natural polyphenolic flavonoid found in many food plants, particularly red onions, berries, and red apples, has been show in many in vitro and animal studies to boost performance, which is why it is often a favorite of elite athletes. But in the new small study, which involved 12 healthy, college-age volunteers who weren’t high-level athletes or regular exercisers, researchers found the supplement provided some benefits generally associated with exercise. After splitting the group, with one half taking 1,000 milligrams (mg) of the supplement for seven days and the other taking a placebo, researchers found that those taking the supplement could ride a bike 13 percent longer before they felt tired. That group also experienced a nearly 4 percent increase in VO2max, a typical measure of fitness. Should these results hold true in the real world, they could be widely beneficial, says lead researcher J. Mark Davis, PhD, professor and director of the exercise biochemistry laboratory at South Carolina University in Columbia. “How many people do you hear say they don’t have enough energy to continue through their day at work, or to do recreational things when they’re done work? The whole idea of having more endurance doesn’t necessarily just apply to athletes,” he says.
The study was partially funded by the Department of Defense, and funding for follow-up studies will come from the Defense Advanced Research Projects Agency and the National Institutes of Health.
WHAT IT MEANS: Not so fast—before you throw away your running shoes and dumbbells, understand that this is not a replacement for exercise. “I never would want people to think that this is a magic exercise pill,” says Davis. “It appears it can provide some benefits that exercise does, but a pill can’t provide it all the benefits for performance and health. But it’s a nice addition.”
For now, here’s what you need to know about this quercetin:
Published on June 24th, 2009
Last updated on March 26th, 2010
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Quercetin is no better than a placebo
According to the latest studies, quercetin is no better than a placebo - http://www.physorg.com/news171193319.html
"An early and widely-cited study reported improvements in performance during a cycling time trial, but Cureton notes that data from the experimental group was not compared to the control group, making the statistical significance of the finding unclear."
Why do companies continue to put forth information based upon flawed studies is beyond me
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