Ah, okay.
I always thought that was kind of a no-brainer stunt. If we assume that sprinting allows you to avoid bullets and blasts of flame it's a pretty small leap to allow it for people who know fencing, kung fu, or the like.
Personally I wouldn't even explain it as a parry, just that your training in [whatever] included enough foot work and positioning that you can use [whatever] as a universal dodge.