I think you are talking about the cycling equipment from Orbitrek.
I haven't tried this. Because, I was afraid that, I would acquire the knee pain, if I do this.
So, I am doing only the Tread mill, which is Electrical. This is quite effective,and it is not sternous. If you plan to buy a tread mill, please go for the electrical one, only and not the Mechanical one, which will be a sternous one.
If any of our members are experienced with the Orbitrek elite, I think they may share their views.