effect of carbohydrate-protein supplement on endurance - e3 champion sports drink

The effect of two sports drink formulations on muscle stress and performance

Medicine & Science in Sports and Exercise (1999) — This study demonstrated that "a [carbohydrate-protein supplement], by providing additional [carbohydrate] and amino acids, may reduce post-exercise muscle stress, as evidenced by a 36 % decrease in 24-hour [creatine kinase] levels. Ten college-age males and females completed a 45-minute run, rested in a 10-minute transition, cycled for 90 minutes, and then performed a time trial (TT). During the transition and 30 minutes into the bike segment, subjects ingested either a 15 % carbohydrate-protein beverage or a carbohydrate-only beverage. Blood samples were collected and analyzed for creatine kinase (a biomarker of muscle damage), lactic acid and glucose. There was a 36 % reduction for the 24-hour post-exercise creatine kinase level in the carbohydrate-protein treatment.

Source:

Ready SL, Seifert JG, Burke E.: The effect of two sports drink formulations on muscle stress and performance. Medicine & Science in Sports and Exercise. 31(5):S119, 1999.