"Kari-Anne Opsal, president of the Norwegian Bridge Federation, said the drugs were “not performance enhancing”." So I don't think its reasonable to go looking

"Kari-Anne Opsal, president of the Norwegian Bridge Federation, said the drugs were “not performance enhancing”." So I don't think its reasonable to go looking to performance enhancement as a reason. To me it does appear that they're following rules meant for actual athletes. How much choice they had I don't know.