Casey, A., Constantin-Teodosiu, D., Howell, S., Hultman, E., & Greenhaff, P. L. (1996). Creatine ingestion favorably affects performance and muscle metabolism during maximal exercise in humans. American Journal of Physiology, 271, E31-E37.

Males (N = 9) performed two bouts of 30 sec exercise for five consecutive days on two occasions. The first set was under normal "conditions" while the second set included ingestion of 20 g creatine monohydrate per day.

Performance improved under the creatine supplementation condition. This was associated with improved ATP resynthesis as a consequence of increased PCr availability in type II fibers.

Implication. Creatine supplementation assists in the performance of repeated short-duration intense bouts of exercise. It could be hypothesized that this effect would extend the volume of quality explosive work in training.

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