The Effects of Exercise on Strength

The way that they measure the effect is what I have a problem with. Median duration of symptoms, nine months for the control group, ten months for intervention group. That's a pretty good amount of time with shoulder pain. If you've had shoulder pain, that is activity limiting. So sure, I would think that any exercise adding that in would create some effect. And it's not surprising that catastrophization matters. We know that to be true.