Italy's Olympic swimming champion Federica Pellegrini was given the all-clear Monday after suffering a breathing scare in the Italian championships last week.
Pellegrini, who won the 200m freestyle in Beijing, came to a halt and started hyperventilating during the 800m event in the Italian short-course championships in Genoa on Friday.
She had three hours of tests at the Italian Olympic Committee's Sports Medicine Lab in Rome Monday.
''It went well, we did all the tests and they were all negative,'' Pellegrini told reporters.
''It was only an attack of hyperventilation, it could have happened to anyone,'' she said.
''I just got scared because it hadn't happened to me before''.
As a precautionary measure, Pellegrini will wear a heart-beat monitor for the next 24 hours, whose results will then be studied.
The swimmer, who became Italy's darling by breaking her own world record to claim the gold in Beijing, said she expected to restart training on Tuesday afternoon ahead of the European championships in ten days' time.
