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Concept
Performance-enhancing substance
Summary
Performance-enhancing substances, also known as performance-enhancing drugs (PEDs), are substances that are used to improve any form of activity performance in humans. A well-known example of cheating in sports involves doping in sport, where banned physical performance-enhancing drugs are used by athletes and bodybuilders. Athletic performance-enhancing substances are sometimes referred as ergogenic aids. Cognitive performance-enhancing drugs, commonly called nootropics, are sometimes used by students to improve academic performance. Performance-enhancing substances are also used by military personnel to enhance combat performance.
The use of performance-enhancing drugs spans the categories of legitimate use and substance abuse.
The classifications of substances as performance-enhancing substances are not entirely clear-cut and objective. As in other types of categorization, certain prototype performance enhancers are universally classified as such (like anabolic steroids), whereas other substances (like vitamins and protein supplements) are virtually never classified as performance enhancers despite their effects on performance. As is usual with categorization, there are borderline cases; caffeine, for example, is considered a performance enhancer by some but not others.
The phrase has been used to refer to several distinct classes of drugs:
Anabolic steroid
Anabolic steroids are synthetically derived from testosterone and modified to have greater anabolic effects. They work by increasing the concentration of nitrogen in the muscle which inhibits catabolic glucocorticoid binding to muscle. This ultimately prohibits the breakdown of muscle and preserves muscle mass. Examples of anabolic steroids include: oxandrolone, stanozolol and nandrolone. Anabolic steroids can be taken through a transdermal method, orally, or through injection. Injectable forms of the steroid are the most potent and long-lasting.
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