I taught my dogs the stand, when I had no idea yet how to train a dog. Whether they were in a sit or down position I put my foot under the rear part of their belly and lifted them slowly up. They all stand now on cue also with duration, but I've read that one should not teach in this manner.
I know now how I should have done it, because I have Forrest's Self Study Heeler Course.

In a similar way I taught one of my Pits the backing up on to an low object. She didn't want to it, she simply sat down and refused to move as soon as she felt the object behind her. My other dogs had no problem with this, but she is generally the most fearful one, when she should do something new.

I tried to help her putting one of her legs on the object behind her and kept it there repeating the duration marker and giving multiple rewards. She now goes backwards on to 3 steps of a stairway but still with hesitation.

Should I have taught it without lifting her leg? With Free Shaping she would never have done it and with Luring I would have had to push her. (We cannot lure on the tail) A 39kg dog you cannot push just a little bit,I would have had to force her.
How should I have done it in her case?

I think you did fine since it worked.

Another method is to place a sheet of plywood flat on the ground and have her back onto that.

GRADUALLY raise the plywood on one end and raise it as she understands what you want from her.

Praise and high value treats for success in something she isn't comfortable with,

Marker training is great for this sort of stuff because ther is no real pressure.

Great tip, Bob. I imagine, that this might make things easier for her. I began with a Kuranda bed, which perhaps was for her still too high.

I had ordered from Germany a set of foam plates which can be slot into and above each other, named Dog Stepper, but I recieved it only few days ago. Very useful also for other purposes. If it interests you to look at, here the link: http://www.dogstepper.com

I think this could be used like the plywood, you recommend. I was only too stupid to use it yet. Slippie still has the tendency to put her butt crosswise to the obstacle and step more or less from the side on it. So I will begin again, for like this I can increase the difficulty in smaller steps.

Thanks!

Interesting video.

https://www.youtube.com/watch?v=ed8Z7YkavxI

Thanks, Bob, for the link. Awsome! Whole lot of new tricks for old dogs. And very lovely and funny to watch.