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Creatine supplementation does not improve physical performance in a 150 m race

C Javierre1, M A Lizarraga, J L Ventura

  • 1Depto. de Ciencias Fisiológicas y Nutrición, Facultad de Medicina, Universidad de Barcelona, Spain.

Revista Espanola De Fisiologia
|May 23, 1998
PubMed
Summary

Creatine supplementation did not enhance 150m sprint performance in national-class sprinters. While plasma creatinine increased, physical performance metrics remained unaffected by the three-day creatine monohydrate regimen.

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Area of Science:

  • Sports Science
  • Exercise Physiology
  • Biochemistry

Background:

  • Creatine is known to improve high-intensity exercise performance.
  • The effects of creatine supplementation on sprinters are not fully understood.

Purpose of the Study:

  • To investigate the impact of creatine supplementation on 150m sprint performance.
  • To analyze changes in plasma creatine and lactate concentrations.

Main Methods:

  • Twelve national-class sprinters participated in a double-blind, placebo-controlled study.
  • Participants completed two 150m sprints: one before and one after three days of creatine monohydrate (25g/day) or placebo supplementation.

Main Results:

  • Plasma creatinine levels significantly increased in the creatine group both before and after the sprint.

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  • No significant improvement in 150m sprint performance was observed with creatine supplementation.
  • Plasma lactate concentrations were also analyzed.

    • Conclusions:

    • Three days of creatine supplementation did not enhance 150m sprint performance in this group of sprinters.
    • Elevated plasma creatinine confirms creatine uptake but does not correlate with performance improvement in this context.