The data I have came from the feedback from my own muscles. The problem I have is that I don't have a large enough space to really try it from more than a few seconds, so you may have to just try it yourself, just not without padding on the hands if you plan on pushing the speed. The first time I tried to find my limit I broke into a gait that will break wrists if some support is not used. It helps a lot to have a dog to study. That is how I learned to move in that position, though I have seen it used in freerunning and [i]The Lord of the Rings[/i] (BBCode for italics) by the character Gollum. On a side note, your English syntax is a little hard to understand. "Is the my interesting" is not standard and I can not tell whether "is my interest" or "is very interesting" (I saw your nationality was Brazilian, so I must take into account the possibility of language mixing) was the intended message.