conclusions analysis of codeine to morphine metabolism rate is needed when we are using morphine/codeine ratio to rule out abuse of narcotics. wada should consider analysis for the cyp2d6 alleles (main metabolizer of codeine) in case of including morphine/codeine ratio in future prohibited list. the possibility of ultra-rapid cyp2d6 cannot be ruled out in certain results of morphine/codeine nea...

Much of the interest in the study of sports from the perspective of an economist lies in the empirical application of contests as efficient mechanisms for eliciting effort. Contestants respond to contest incentives, and these incentives include the incentive to cheat. This paper discusses different forms of cheating: sabotage, doping, and match fixing. The paper discusses how these forms of che...

BACKGROUND The use of performance enhancing drugs is still a major problem in competitive sports. Even though tennis is not affected by systematic doping, there is lack of scientific evidence on the effect of sanctions on players` career. The aim of this study was to analyze male tennis players' career after a doping sanction. METHODS All doping offences committed by male professional tennis ...

Misuse of recombinant human erythropoietin (rhEPO) is a major concern in competitive sports, and the implementation of tests allowing for higher detection rates than what current tests are capable of is required. In this study, a novel lateral flow EPO isoform test kit, EPO WGA MAIIA, is evaluated on the basis of plasma and urine samples obtained from eight healthy males in connection with a 28...

The sport nutrition and doping are known to be important issues in sports, but there is evident lack of studies which investigated those issues in swimming, especially with regard to parallel analysis of coaches and athletes. The first aim of this study was to compare knowledge of swimming coaches and their athletes about nutrition and doping. Also, we have identified interrelationships between...