improved endurance performance - e3 champion sports drink

Inter-study examination of physiological variables associated with improved endurance performance with carbohydrate/protein administration

Medicine & Science in Sports & Exercise (2006) — This study concluded that "combined data from three studies revealed significant improvements in performance ... with [carbohydrate-protein] versus [carbohydrate-only] supplementation." Heart rate (HR), rating of perceived exertion (RPE), and lactate were lower in the carbohydrate-protein trials, and "decreases in HR and RPE were associated with improvements in performance." Data from previous studies showing a 19 % average improvement in endurance performance with a carbohydrate-protein beverage compared to a carbohydrate-only beverage were reexamined to determine if the improvement was related to any physiological variables that were measured. The analysis revealed that heart rate, perceived exertion, and blood lactate levels were lower in the carbohydrate-protein trials, although only decreases in heart rate and perceived exertion were associated with improvements in performance.

Source:

Saunders, M.J., Todd, M.K., Valentine, R.J., St. Laurent, T.G., Kane, M.D., Luden, N.D. and Herrick, J.E.: Inter-study examination of physiological variables associated with improved endurance performance with carbohydrate/protein administration. Medicine & Science in Sports & Exercise. 38(5):S113-S114, 2006.