I tried this on a puppy that my parents got over the weekend. When they picked him up, he had been playing roughly with his siblings, so he was limping from a hurt leg. Not a bad hurt, just a sprain or something similar. It was enough to sap his strength though, and he just wanted to lay around and let it heal.
So when I was alone with him for a moment, I cleared my mind, held his leg and practiced this technique on him. By the next morning he was up and moving around a lot more, not even limping most of the time. I did notice him limping a few times though, so I did the practice on his leg one more time. The next day, he wasn't limping anymore, and has been up and running around like a puppy ever since.