The increase concern for a healthy lifestyle is leading the pursuit for the best nutrients, natural or fabricated, for positive effect on all body functions. And especially for the ones who include exercise in their daily schedule, the search exists for the best nutrition and supplementation to help with their fitness goals, and of course, to improve physical appearance. The true fitness seeker is always trying new food sources and supplements to increase energy and improve personal performance in exercise because each individual has different tastes, eating habits, body structure and metabolism. What may affect one person may have little or no effect on another. But the outcome of components provided by the nutrients in the human body is always the same. And one of these components is nitric oxide (NO).
Before we discuss the benefits of NO to exercise, we will review the information about its production in the body. Do you know where nitric oxide comes from? How is it produced? What functions does it have on the body? What about what does it do for exercise? Can the food sources that provide NO be considered bad for health?

Arginine, a non-essential AA available in our bodies, is a natural source dependant on oxygen for the production of NO. But when limited amount of oxygen is available, another pathway for production of NO is from eating Nitrates and Nitrites. Legumes (roots) or green leafy foods are the best sources of dietary nitrates. When these dietary nitrates are consumed, initially in the mouth they are transformed into nitrite by the action of bacteria on the tip of our tongues and carried by the saliva. The Nitrate is transformed into Nitric Oxide by the bacteria in the gastrointestinal tract. The two pathways work synergistically and complement each other


To increase levels of nitrate and nitric oxide, one must consume fair amounts of nitrates and one food source could be beetroot. Beets contains polyphenols like quercetin and reservatrol as well as AA betaine (improves molecular endurance power output and strength), and is considered to have high levels of nitrates. Since NO is a vasodilator, beets may be able to deliver more nutrients sparing the utilization of ATP. It has been shown that consuming beetroot juice could significantly increase exercise intensity

Articles Consulted:
Dietary Nitrate Supplementation reduces the O2 cost of low-intensity exercise and enhances tolerance to high-intensity exercise in humans. Bailey, et al. Journal of Applied Physiology. 2009.
Food Sources of Nitrates and Nitrites: the physiologic context for potential health benefits. Hord, et al. The American Journal of Clinical Nutrition. 2009.
The nitrate-nitrite-nitric oxide pathway in physiology and therapeutics. Lundberg, et al. Nature Publishing Group. 2008.
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