I’d like to thank Ron Jones for including the Rotater in his list of Basic Functional-Training Equipment . Ron is a highly respected fitness professional with qualifications that include:
Ron Jones using a stability ball
Here’s what Ron has to say about the Rotater (and why he included it in this list of basic functional training equipment):
“This is a weird looking manual stretch device created by two industrial mechanics. It works great to stretch your shoulder in positions impossible to reach by yourself.”
So…if you need to increase your shoulder range of motion, then get the Rotater .