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Caffeine and performance

L L Spriet1

  • 1School of Human Biology, University of Guelph, ON, Canada.

International Journal of Sport Nutrition
|June 1, 1995
PubMed
Summary

Caffeine boosts performance in laboratory endurance and short intense exercise but its real-world athletic benefits are unclear. Ethical concerns arise as ergogenic effects occur below IOC limits.

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Area of Science:

  • Sports Science
  • Exercise Physiology
  • Nutritional Biochemistry

Background:

  • Caffeine is a widely used ergogenic aid.
  • Laboratory studies show caffeine improves endurance and short-term intense exercise performance.
  • Limited field studies exist to validate laboratory findings in athletic settings.

Purpose of the Study:

  • To evaluate the ergogenic effects of caffeine on athletic performance.
  • To assess the applicability of laboratory findings to real-world athletic scenarios.
  • To investigate the ethical implications of caffeine use in sports.

Main Methods:

  • Review of existing literature on caffeine and exercise performance.
  • Analysis of studies involving prolonged endurance and short-term intense exercise.
  • Examination of data on incremental exercise tests and sprinting.

Main Results:

  • Caffeine (3-9 mg/kg) enhances performance in laboratory-based prolonged endurance and 5-min intense exercise.
  • No significant performance enhancement observed during incremental exercise (8-20 min) or sprinting (<90 s).
  • Ergogenic effects detected at urinary caffeine levels below the International Olympic Committee's limit.

Conclusions:

  • Caffeine's ergogenic benefits are primarily demonstrated in specific laboratory exercise protocols.
  • The practical application of caffeine for athletic performance in field settings requires further investigation.
  • The use of caffeine by athletes presents ethical considerations due to its performance-enhancing effects below regulated limits.

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