FINA said none of the athletes who competed at the 2009 world aquatic championships failed doping tests. (Francois Xavier Marit/AFP/Getty Images)

Despite a large number of world records being broken, no swimmer failed a doping test at the recent world championships in Rome, according to the governing body of the sport.

FINA (Fédération Internationale de Natation), which is based in Lausanne, Switzerland, said Wednesday it had completed 391 doping tests conducted at the championships, where 43 records were broken, but all were negative. A total of 162 samples were also screened for the blood-boosting hormone EPO, a hormone that allows more oxygen to be carried to the body’s muscles.

Almost two-thirds of the tests (252) were taken among swimmers, with 65 from water polo players, 33 from divers, 30 from athletes in open water races and 11 from synchronized swimmers.

The broken records have been attributed to high-tech, water-resistant body suits, which will be banned at the end of the year.

Michael Phelps of the United States was selected the best male swimmer after winning five gold medals and one silver, while setting individual world records in the 100- and 200-metre butterfly.

Federica Pellegrini of Italy, who won two golds and set three world marks in the 200 and 400 freestyle events, was best female swimmer.

Canada won nine medals at the event, which took place from July 15 to Aug. 2.