The first thought is that appropriate motion actually reduces pain; neurologically it reduces pain, which is an important content. Number two, we know that motion, and again appropriate motion, increases circulation and takes away swelling.
The confidence aspect is more the psychological, it is more the brain. Number one, we take away apprehension. Apprehension of movement because the person is afraid that motion is going to hurt. When you take away the apprehension, it helps them to be more confident. Number two, it takes away anxiety. There is anxiety and fear of re-injury or closely related. Finally, pain free motion encourages activity and so you really start building a positive attitude about healing again, where people believe they are getting better.