A study has indicated that a low-carb, mixed-carb sports drink with added protein leads to prolonged endurance performance in trained female athletes.

Studies have shown that carbohydrate-containing beverages increase endurance exercise performance, compared to water and placebo drinks. Some previous studies have suggested that adding a moderate amount of protein to a low- or moderate-carbohydrate supplement can further enhance endurance.
In their effort to develop a more effective supplement, the researchers switched from a single source of carbohydrate (dextrose) to a combination of three carbohydrates: glucose, fructose, and maltodextrin.
"Multiple sources of carbohydrate appear to increase exogenous carbohydrate oxidation," said the authors.
The new formulation improves exercise endurance in female athletes, compared to a standard dextrose-only supplement. The protein plus mixed-carb (and low-carb) supplement "improved performance despite containing 50 percent lower carbohydrate content and approximately 30 percent fewer calories," said McCleave and co-authors.
"This may be an important consideration for those individuals concerned about body weight and caloric intake," they added.
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Source-ANI