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Non-intentional doping in sports.
Mauricio Yonamine1, Paula Rodrigues Garcia, Regina Lúcia de Moraes Moreau
1Laboratory of Analytical Toxicology, College of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 580, B13B, CEP: 05508-900, São Paulo, Brazil. yonamine@usp.br
Sports Medicine (Auckland, N.Z.)
|October 1, 2004
Summary
Athletes testing positive for banned substances may not always be intentional doping. This review examines the scientific evidence for accidental drug exposure, differentiating between intentional cheating and inadvertent absorption in sports.
Area of Science:
- Sports Science
- Analytical Chemistry
- Anti-Doping
Background:
- International Olympic Committee introduced compulsory drug testing in 1968.
- Doping cases are frequently reported worldwide, with positive results based on detecting prohibited substances in athlete samples.
- Distinguishing intentional doping from accidental exposure remains a challenge for current analytical methods.
Purpose of the Study:
- To review scientific literature on accidental drug exposure in athletes.
- To evaluate the plausibility of athletes' claims of inadvertent or passive absorption of banned substances.
- To determine circumstances under which accidental exposure could lead to a positive doping control result.
Main Methods:
- Literature review of scientific studies investigating accidental drug exposure.
- Analysis of case studies and scientific evidence supporting or refuting athletes' claims.
- Discussion of analytical limitations in differentiating intentional vs. unintentional doping.
Main Results:
- Some banned substances may be detectable in urine due to passive inhalation (e.g., marijuana smoke) or ingestion of contaminated food or supplements.
- Scientific evidence varies regarding the likelihood of accidental exposure leading to positive doping tests.
- Current analytical methods cannot definitively distinguish between intentional doping and accidental exposure.
Conclusions:
- Athlete claims of accidental exposure are plausible in specific circumstances, supported by scientific literature.
- Further research and improved analytical techniques are needed to reliably differentiate intentional doping from inadvertent exposure.
- The complexity of differentiating intentional doping from accidental exposure highlights challenges in anti-doping enforcement.