Your butt has so much power… so let’s make sure you are using it correctly.
The Sorensen Test is designed to ensure you are able to engage your glutes, hamstrings and scapular stabilizers while not over firing your lower back muscles (a problem most of us have). It is performed by getting to the finish position of a back extension while in a GHD machine. Your thighs should be resting on the pads while your ankles are locked in place. We are looking to see if you can hold that straight body position for 2 minutes without feeling any back pain. If you go over 2:00, just keep going and see how long you can hold it.
Watch our newest staff member, David Thomas Tao, demonstrate how it is done in the video above.