The old record , which was also hers was swum in 3 : 56.79 , while 3 : 56.09 is the new best time .
Laure Manaudou swims a new World record at the 400m freestyle .
The old record , which was also Laure Manaudou was swum in 3 : 56.79 , while 3 : 56.09 is the new best time .
Laure Manaudou swims a new World record at the 400m freestyle .