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Creatine supplementation and multiple sprint running performance.

Mark Glaister1, Richard A Lockey, Corinne S Abraham

  • 1School of Human Sciences, St Mary's College, University of Surrey, Strawberry Hill, Twickenham, UK. Glaistem@smuc.ac.uk

Journal of Strength and Conditioning Research
|May 12, 2006
PubMed
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Short-term creatine monohydrate supplementation did not improve multiple sprint running performance in physically active men. Despite changes in body mass and fat, key performance metrics and lactate levels remained unaffected, questioning its ergogenic value.

Area of Science:

  • Sports Science
  • Exercise Physiology
  • Nutritional Supplementation

Background:

  • Creatine monohydrate is a popular ergogenic aid used to enhance athletic performance.
  • Its efficacy for short-term, high-intensity intermittent exercise like multiple sprint running requires further investigation.

Purpose of the Study:

  • To investigate the effects of 5-day creatine monohydrate supplementation on multiple sprint running performance.
  • To assess changes in body composition and blood lactate concentrations post-supplementation.

Main Methods:

  • Double-blind, placebo-controlled study with 42 physically active men.
  • Multiple sprint running trials (15 x 30m) with photocell timing.
  • Creatine (25g/day) or placebo supplementation for 5 days.

Related Experiment Videos

  • Body mass, body fat percentage, and blood lactate levels were measured.

    • Main Results:

    • Creatine group showed a slight increase in body mass (0.7 kg) and reduction in body fat (0.4%) compared to placebo.
    • No significant differences were observed in sprint times (fastest, mean), fatigue index, or posttest blood lactate levels between groups.
    • Statistical analysis indicated no performance enhancement from creatine supplementation.

    Conclusions:

    • Short-term creatine monohydrate supplementation does not appear to benefit multiple sprint running performance.
    • The observed changes in body composition did not translate to improved sprint capacity or reduced fatigue.
    • Further research may explore different dosages, durations, or populations for creatine's effects on intermittent high-intensity exercise.