How to safely train with grippers to avoid problems with fingers and joints?
I've once started training with Heavy Grip 150lbs, which was too hard for me on begin. But after a few weeks I've forced to close it. Probably I was training too intensively for my hands not used to professional grippers, because I've started to have some 'clicks' in smallest finger. The binding of finger was not smooth, as if it was blocked. When the blockade was released, there was such click.
I've read on such forums that the climbers have also problems with that think. This is now over, but I've stopped training with grippers for almost a year and now I'm beginning once again. This time I want to be very cautious.
How should I train in the safe way, to prevent such things to happen again? Should I stop to try to close the gripper and concentrate on endurance not the pure strength? Should I use some supplementary exercises to prevent single-direction strenght training? Or my previous problems were caused by the lack of professional warm-up?