An isometric RDL involves pulling up against a barbell set in a squat rack below safety pins without movement.

“typically what we'll do is you'll put the Barb in the rack and so you can imagine like a squat rack and you raise the arms of the rack yep yep and you have safety pins that run horizontal perpendicular to the ground right y so instead of putting the bar on top of those y you put the bar below them and so you just lift up against the rack and nothing moves and so you can set your position”

“you're going to load the bar in a low position they're going to stand under a weight that is much heavier than that they could ever lift and basically push up against the bar I mean how are you doing an isometric squat for example”