The L-citrulline in watermelon juice helps increase muscle mass , improve athletic performance and relieve post-workout muscle pain , according to a study published in the Journal of Agricultural and Food Chemistry .
Dr. Encarna Aguayo's team explains this huge benefit of watermelon juice to athletes with the following facts: 100 grams of watermelon juice contains 8.1 milligrams of vitamin C, 4,532 micrograms of lycopene and 303 milligrams of beta-carotene - powerful antioxidants that prevent damage to the body. DNA and protect tissues from cancer.
The contained L-citrulline is not one of the vital amino acids, because it is also synthesized in the human body - in the small intestine. However, when ingested with food, the compound is converted to L-arginine and nitric oxide.
Citrulline, like arginine , is important for vasodilation - the dilation of blood vessels, especially large arteries and veins. Nitric oxide is used by smooth muscle, which relaxes under its influence. As a result, it facilitates the work of blood vessels and improves blood circulation.
Nitric oxide maintains the elasticity of blood vessel walls, helping to prevent hypertension . When the cardiovascular system works optimally, the likelihood of developing a blood clot leading to a stroke or heart attack drops significantly, and the supply of nutrients and oxygen to the muscle tissue is as favorable as possible for its calming, strengthening and growth.
An additional benefit of citrulline is that it binds to ammonia in the liver and removes it from the body. Ammonia can be highly toxic to the liver. It accumulates not only in poisoning, but also in poor nutrition, combined with strenuous physical activity.
Dr. Aguayo's team conducted its study with the participation of two groups of athletes, one of whom consumed drinks artificially enriched with L-citrulline, the others - pure watermelon juice. After six months, both groups showed improvements in most of the observed indicators, but in the second group, they were significantly more pronounced.
Researchers have done a lot of research: for endurance and strength , as well as blood tests , which are definite - L-citrulline from fresh watermelon juice is absorbed much better than through supplements. This is due to its high bioavailability - in this form, the beneficial ingredient is used by the body more easily and efficiently.