It did seem to help for elbow tendonitis, as I read about in the NYT article, but I think there's a problem with this solution. You have to compress the tendon to twist this up before you get the benefit of having the muscle/tendon pulled while releasing the twist. What I think is a much better solution, and I've tried it just once, is the forearm weight strengthening apparatus you find in every gym and fitness center. It's a 18" PVC pipe, 2 1/2" in dia. with a hole drilled in the middle and a rope threaded through the hole and knotted. There's a weight (about 5-10lb) on the end of the rope. Wrap the rope around the pipe and support your forearms chest high and unwind the rope slowly letting the weight go to the floor. In other words, instead of using the device to pull the weight up, use it just to lower the weight to the floor. Do that until your forearms are exhausted. I did that just once and I forgot I even had a problem.