Performance-enhancing substances (PESs), also known as performance-enhancing drugs (PEDs),[1] are substances that are used to improve any form of activity performance in humans.
Many substances, such as anabolic steroids, can be used to improve athletic performance and build muscle, which in most cases is considered cheating by organized athletic organizations. This usage is often referred to as doping. Athletic performance-enhancing substances are sometimes referred to as ergogenic aids.[2][3] Cognitive performance-enhancing drugs, commonly called nootropics,[4] are sometimes used by students to improve academic performance. Performance-enhancing substances are also used by military personnel to enhance combat performance.[5]
Amphetamines and caffeine are stimulants that increase alertness, improve focus, decrease reaction time, and delay fatigue, allowing for an increased intensity and duration of training ...
Physiologic and performance effects [of amphetamines]
• Amphetamines increase dopamine/norepinephrine release and inhibit their reuptake, leading to central nervous system (CNS) stimulation
• Amphetamines seem to enhance athletic performance in anaerobic conditions 39 40
• Improved reaction time
• Increased muscle strength and delayed muscle fatigue
• Increased acceleration
• Increased alertness and attention to task
Smart drugs
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