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Caffeine and exercise.

Scott A Paluska1

  • 1University of Washington, Department of Family Medicine, Roosevelt Medical Center, 4245 Roosevelt Way NE, Box 354775, Seattle, WA 98105, USA. spaluska@u.washington.edu

Current Sports Medicine Reports
|July 2, 2003
PubMed
Summary

Caffeine enhances athletic performance and endurance, even with regular use, primarily by blocking adenosine receptors. While generally safe for athletes, excessive intake may lead to dependence and ethical concerns in sports.

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Area of Science:

  • Sports Science
  • Pharmacology
  • Human Physiology

Background:

  • Caffeine is the world's most consumed drug and a popular ergogenic aid for athletes.
  • Athletes use caffeine to improve endurance, performance, concentration, and alertness.
  • Habitual caffeine intake does not negate its performance-enhancing effects.

Purpose of the Study:

  • To review the physiological effects of caffeine as an ergogenic aid in sports.
  • To explore the mechanisms of action and safety profile of caffeine for athletes.
  • To discuss the implications of caffeine use in competitive sports.

Main Methods:

  • Review of existing scientific literature on caffeine's effects on athletic performance.
  • Analysis of proposed physiological mechanisms, focusing on adenosine receptor antagonism.
  • Examination of safety, side effects, and regulatory status of caffeine in sports.

Main Results:

  • Caffeine significantly improves endurance during prolonged exercise and enhances short-term, high-intensity performance.
  • Key benefits include improved concentration, reduced fatigue, and increased alertness.
  • Adenosine receptor antagonism is the most likely primary mechanism of action.
  • Caffeine is relatively safe, with no significant negative performance effects or dehydration risks.
  • Tolerance or dependence can occur with routine use, and abrupt cessation causes withdrawal symptoms.

Conclusions:

  • Caffeine is an effective ergogenic aid for athletes, offering performance and cognitive benefits.
  • Its primary mechanism involves adenosine receptor antagonism, and it is generally safe for exercise.
  • Despite benefits, potential for dependence and withdrawal exists, alongside ethical considerations and regulatory challenges in sports.

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