Does caffeine counteract the ergogenic effect of creatine supplementation?
N.D. Gill*, D.G. de Hedervary, & R.F. Weatherby Centre for Sport and Exercise Science, The Waikado Polytechnic, New Zealand This study was conducted to determine whether caffeine counteracts the ergogenic effect of creatine supplementation in repeated high-intensity exercise. Fourteen habitually active to well-trained male subjects volunteered for the study. The mean age (SD) of the subjects was 21.5 3.2 years and their mean body mass (SD) was 83.0 8.3 kg. Before subjects were allocated to groups they performed six repetitions of a six second maximal cycle sprint with 30 seconds of passive rest between each repetition. Subjects were then randomly assigned to either a creatine (0.35 g.kg body weight-1.day-1 creatine monohydrate for six days) or a creatine/caffeine (0.35 g.kg body weight-1.day-1 creatine monohydrate + 5 mg.kg body weight-1.day-1 caffeine for six days) supplementation protocol using a double-blind design. After six days of supplementation subjects performed the performanc
