Russia had more doping violations than any other country in 2014, and track and field was the sport with the worst doping record that year, World Anti-Doping Agency said on April 27.
Russian athletes racked up a total of 148 violations, followed by Italy with 123, India with 96, and Belgium and France with 91 violations each, WADA said.
The findings for Russia come as the country remains banned from international track and field, including the Olympics, after WADA found evidence of systematic, state-sponsored doping.
The Russian anti-doping agency has also been suspended from conducting any testing in the wake of the scandal.
Track and field led the number of doping violations by sport with 248, followed by bodybuilding with 225, cycling with 168, weightlifting with 143, and powerlifting with 116.