RDL variations An RDL is a vertical hip extension movement and therefore will always be more of a lower glute dominant movement. A b-stance RDL is challenging stability more than a regular RDL so you will get some of the glute medius/minimus working to stabilize the pelvis. This goes for any lengthened unilateral movement. A b-stance RDL with rotation will lengthen the upper glutes a bit more compared to a regular RDL. Which will challenge the medius/minimus. But you’re still getting lower glute