Fig. 1.Power data for the carbohydrate and caffeine mouth-rinse conditions. Data for the carbohydrate and caffeine mouth-rinse conditions are presented as change scores from the corresponding power data in the placebo mouth-rinse condition. *, Substantially different from the placebo mouth-rinse condition; †, substantially different from the carbohydrate mouth-rinse condition. CAF, caffeine; CHO, carbohydrate.