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Stimulants and Athletic Performance (Part 1 of 2): Amphetamines and Caffeine
The Physician and Sportsmedicine
|July 27, 2016
Summary
Athletes often use amphetamines and caffeine to combat fatigue, but their performance effects and health risks remain unclear. Both substances carry significant health concerns and are regulated in sports.
Area of Science:
- Sports Science
- Pharmacology
- Exercise Physiology
Background:
- Athletes frequently use stimulants like amphetamines and caffeine to enhance athletic performance and reduce fatigue.
- The physiological effects and ergogenic potential of these substances are not fully understood.
- Both amphetamines and caffeine carry potential health risks and are subject to anti-doping regulations.
Purpose of the Study:
- To investigate the unclear effects of amphetamines and caffeine on athletic performance.
- To highlight the potential health risks associated with stimulant use in athletes.
- To inform about the regulatory status of these substances in sports.
Main Methods:
- Review of existing literature on stimulant effects on athletic performance.
- Analysis of physiological mechanisms of action for amphetamines and caffeine.
- Examination of anti-doping regulations concerning banned substances.
Main Results:
- Amphetamines impact the central nervous system (CNS), potentially causing adverse effects like anxiety, insomnia, and fever.
- Caffeine may enhance fatty acid utilization, mask fatigue via CNS stimulation, and increase muscle contraction force.
- Amphetamines are completely banned by the International Olympic Committee (IOC).
Conclusions:
- The use of amphetamines and caffeine by athletes presents unclear performance benefits alongside significant health risks.
- Caffeine is banned by the IOC if urine concentrations exceed 15 μ g·ml(-1).
- Athletes should be aware of the potential dangers and regulatory restrictions surrounding stimulant use.
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