Use reallife Animation for First Person Camera Shake

I have recorded a Animation Sequence with VCAM.

Now I want to use this as my First person Camera Shake.

The problem is that, it’s only playing once and there is no real Loop option.

Has anyone ever tried to do sth similar and has some tricks or even a solution for me.

The way I call the camera shake is just very simple and not really important, every time I click W.