Swensen, T., Kelly, B., Wigglesworth, J., & Keller, B. (2001). Effect of creatine and recovery time on power output during 45-second supramaximal cycling intervals. Medicine and Science in Sports and Exercise, 33(5), Supplement abstract 1158.

Trained male cyclists (N = 14) performed four 45-s bouts of supramaximal cycling. Two groups (N = 7) were formed, one ingesting creatine (25 gm/day for five days and then 5 gm/day until completion) or a placebo. Ss completed a Wingate, VO2max, and three recovery tests on an ergometer separated by at least 48 hours. Recovery tests were four 45-s supramaximal efforts separated by randomly assigned 45, 90, or 135 seconds of active recovery.

There was no significant difference in lean body mass, peak power output, heart rate, VO2, heart rate, blood lactate, and percent fatigue across the work bouts or between groups and recovery periods.

Implication. Creatine supplementation did not improve work characteristics of supramaximal cycle sprinting.

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