Fig. 3From: Effects of supplementing with an 18% carbohydrate-hydrogel drink versus a placebo during whole-body exercise in −5 °C with elite cross-country ski athletes: a crossover studyThe relative contributions of fat, endogenous carbohydrate and exogenous carbohydrate oxidation to the total energy yield during the second hour of exercise (60–120 min). PLA, placebo trial; CHO-HG, carbohydrate trial. Significant difference between CHO-HG and PLA (P < 0.05) for afemales (n = 6) and bmales (n = 6) and call athletes (n = 12)Back to article page