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Creatine supplementation enhances intermittent work performance

M C Prevost1, A G Nelson, G S Morris

  • 1Marine Corps Air Station, EI Toro, USA.

Research Quarterly for Exercise and Sport
|September 19, 1997
PubMed
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Creatine supplementation significantly enhances high-intensity, intermittent exercise capacity. This ergogenic aid boosts total work time across various exercise protocols, particularly benefiting shorter, more intense intervals.

Area of Science:

  • Exercise Physiology
  • Sports Nutrition
  • Human Performance

Background:

  • High-intensity, intermittent exercise is crucial for many sports.
  • Understanding ergogenic aids like creatine is vital for performance optimization.
  • Creatine monohydrate is a well-researched supplement for anaerobic performance.

Purpose of the Study:

  • To investigate the effects of creatine supplementation on high-intensity, intermittent exercise.
  • To quantify the impact of creatine on total work time across different exercise protocols.

Main Methods:

  • Eighteen participants completed two sets of four cycling-to-exhaustion work bouts.
  • Work bouts were performed at 150% peak oxygen uptake (VO2peak) under varying intensities and rest periods.
  • A crossover design was used, with participants receiving either placebo or creatine monohydrate supplementation.

Related Experiment Videos

Main Results:

  • Creatine supplementation significantly increased total work time across all protocols (p < .01).
  • The greatest improvements were observed in the shortest work/rest interval (10-s work/20-s rest), exceeding 100% increase.
  • Shorter intermittent protocols (20-s work/40-s rest and 60-s work/120-s rest) showed significant increases of 61.9% and 61.0%, respectively.
  • Nonstop exercise showed a 23.5% increase in total work time with creatine.

Conclusions:

  • Creatine supplementation effectively enhances the capacity to perform high-intensity, intermittent exercise.
  • The benefits of creatine are most pronounced during protocols with shorter work and rest intervals.
  • Creatine monohydrate is a valuable ergogenic aid for athletes engaging in high-intensity, intermittent activities.