Romer, L. M., Barington, J., & Jeukendrup, A. E. (2001). Effects of oral creatine supplementation on high intensity, intermittent exercise performance in competitive squash players. Medicine and Science in Sports and Exercise, 33(5), Supplement abstract 1151.

Squash players (N = 9) performed an on-court game simulation that involved 10 sets of two repetitions. Each set was separated by 30 seconds of passive recovery. Under one condition, the group ingested creatine (.75 g/kg/day), while in the other a placebo (maltodextrin) was ingested. The experiences were separated by a four-week washout.

Average set sprint time improved significantly in the creatine condition 3.2% more than in the control group. The later sets were performed significantly faster when being supplemented with creatine.

Implication. Creatine supplementation improves high-intensity, intermittent exercise performance.

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