Effect of a Carbohydrate-Protein Supplement on Endurance Performance during Exercise of Varying Intensity

• DOI: 10.1123/ijsnem.13.3.382
• Publication Date: 2016-08-10T11:50:30Z
• Authors: John L. Ivy; Peter T. Res; Robert C. Sprague; Matthew O. Widzer
• Keywords: Time trial

Increasing the plasma glucose and insulin concentrations during prolonged variable intensity exercise by supplementing with carbohydrate has been found to spare muscle glycogen increase aerobic endurance. Furthermore, addition of protein a supplement will enhance response supplement. The purpose present study was compare effects carbohydrate-protein on endurance performance. Nine trained cyclists exercised 3 separate occasions at intensities that varied between 45% 75% VO 2max for h then 85% until fatigued. Supplements (200 ml) were provided every 20 min consisted placebo, 7.75% solution, / 1.94% solution. Treatments administered using double-blind randomized design. Carbohydrate supplementation significantly increased time exhaustion (carbohydrate 19.7 ± 4.6 vs. placebo 12.7 3.1 min), while enhanced effect (carbohydrate-protein 26.9 4.5 min, p < .05). Blood levels elevated above supplementation, but no differences treatments. In summary, we performance which occurred alone, reason this improvement in not evident.