Following an overnight fast, healthy males (n = 12, age: 24 ± 7 yr, height: 181 ± 6 cm, body mass: 78.1 ± 9.4 kg, VO2max: 47.6 ± 7.1 mL·kg-1·min-1, Wmax: 316 ± 51 W) cycled steady state (40 min, SS1, 56 ± 4%Wmax, SRM Ergometer) followed by a time trial (15 min, TT1,Wattbike cycle ergometer), a 2 hour passive recovery, and cycled steady state (20 min, SS2, power equal to SS1) followed by a time trial (15 min, TT2). Participants ingested either placebo (P, low-caloric gel, equal in flavour) or Maxifuel’s Viper® Active Gel (V, 65 gram equal to one gel) (Maxinutrition Ltd, Hemel Hempstead, UK), 15 min pre-SS1 (+250 ml water), 0 hr post-TT1 (+750 ml water), 1 hr post-TT1 (+250 ml water), and 15 min pre-SS2 (+250 ml water). Maxifuel’s Viper® Active Gel contains 22 g maltodextrin, 11.2 g sucrose, 1.5 g dextrose, 0.8 g fructose and 0.1g sodium per 100g). Experimental design was double-blind and randomized. Carbohydrate oxidation was calculated with stoichiometric equations from Jeukendrup & Wallis. Two-way ANOVA with post-hoc t-tests were used for analysis with significance accepted at p < 0.05.