FiveFrameSwing
Banned
I suspect the drill has her increasing upper body resistance/pull back which sets up the tug of war with the rear leg around the rear hip pivot with hip/pelvis as bottom of top and not top of bottom.
pelvis can then open while rear hip can remain closed (in IR)
stop swings can be a good drill
Tom ... do you consider the resistance to be equivalent to physically pulling backward/rearward?
Is it the latissimus dorsi muscle that you consider active in this resistance or pull back?