Quick dash advice?

Hey guys, was just wondering, how do you animate really fast dashes, such as in this example:


Are they basically just 1 frame movements, followed by a slide? Any advice appreciated.

best thing to do if you have access to the youtube video is to slow it down as much as you can and repeatedly pause it with the space-bar until you get to the moment you want.
but generally though, they're really just a tween or a few frames with horizontal blur on them.