© 2021 MJH Life Science and Nutrition Outlook. all rights reserved.

© 2021 MJH Life Sciences™ and Nutrition Outlook. all rights reserved.

For the first time, the effect of drinking Sustamine in a rehydration sports drink containing electrolytes was tested.

Studies have shown that the amino acid L-glutamine can enhance the absorption of water and electrolytes-this is the key to improving athletic performance. Studies have also shown that Sustamine is a branded L-alanyl-L-glutamine dipeptide component, and its absorption rate is 200% higher than that of standard L-glutamine itself. However, as far as sports nutrition is concerned, the effect of drinking Sustamine in a rehydration sports drink containing electrolytes has never been tested. In a recent study, researchers at the University of Central Florida explored whether the addition of low and high doses of sutamide to Gatorade G2 beverages can help well-trained endurance athletes run longer before they are exhausted. .

The study was conducted on 12 men who had undergone endurance training. The subjects were tested on four different occasions, with a minimum clearance period of one week. During each trial, the subjects were first asked to run for one hour at a peak VO2 of 75% (the number of milliliters of oxygen used per minute of body weight), and then asked to run to exhaustion at a peak VO2 of 90%.

In one trial, the subjects did not drink any beverages. In another experiment, they consumed 1 liter of Gatorade alone (250 ml every 15 minutes) during an hour of running. In the other two trials, subjects drank Gatorade, but this time supplemented with a low dose (600 mg/liter) or a high dose (2 grams/liter) of sultamine.

Compared with non-hydration, when subjects drank beverages containing low or high doses of Sustamine, there was a significant difference in their fatigue time.

However, the researchers found that the fatigue time of high-dose Sustamine beverages increased by only 12.7% compared with beverages without Sustamine. They said there was no statistically significant difference. performance."

Nonetheless, they pointed out that "this 12.7% performance increase may have an impact on competitive endurance racing."

The researchers did find that 45 minutes after the start of the Sustamine test, plasma glutamine concentrations increased significantly; during the high-dose test, these levels remained high within an hour, indicating that higher doses of glutamine may be needed In order to maintain a high glutamine level after 45 minutes of exercise.

"For endurance athletes such as long-distance runners, adding Sustamine to the hydration regimen may allow a longer period of time before fatigue begins," concluded one of the researchers, Dr. Jay Hoffman and the institute’s sports and exercise professor . University of Central Florida, in a press release.

Sustamine was provided by Kyowa Hakko USDA (New York City), which sponsored the research.

Jennifer Grebow Editor-in-Chief of Nutrition Outlook jennifer.grebow@ubm.com

McCormack WP et al., "The effect of l-alanyl-l-glutamine intake on one-hour running performance", Journal of the American College of Nutrition. Published online on June 22, 2015.