Russian figure skater Kamila Valieva’s earlier positive doping test result may have been due to her grandfather’s heart medication, the teenager’s legal team and an Olympic official said. Denis Oswald, the International Olympic Committee’s (IOC) permanent chair of the disciplinary commission, said on Tuesday that the teenage athlete claimed her test may have been contaminated with the heart medication her grandfather is taking. On Feb. 7, it was confirmed that the 15-year-old tested positive for trimetazidine, a banned heart medication that can increase blood flow efficiency and help endurance. The sample was taken from a Dec. 25 test, and she was provisionally suspended by the Russian Anti-Doping Agency (RUSADA). The Court of Arbitration of Sport (CAS) ruled on Monday to have her suspension reinstated, rejecting appeals by the IOC, the World Anti-Doping Agency (WADA), and the International Skating Union (ISU). “There can be completely different ways how it got into her …