Butt wink during hack squat
I thought my form was okie, but on a closer inspection I can see that although my lower back is firmly pressed into the pad, at the lowest part of the descend, my butt is coming off the pad into a posterior pelvic tilt, long story short, although I had no problem whilst doing this, now that a few hours have passed, my lower back feels incredibly heavy.
I can still hinge pain free, did 5 controlled glute bridges with pause at the top, 5 cat-cow, 5 dead bugs on each leg, semi cobra to child pose and all that is pain free, but I can still feel my lower back very strongly.
I can lift my knees like in high-knees, the movements are pretty much pain free.
I'm not sure if this buttwink has loaded my lower back/spinae erectors to the point of injurying them or just loading them that has brought about extreme fatigue.
Today was just pendulum squats and hack squats, both done for 3 sets, all the reps done ATG under control.
I guess i should have stopped right at the point before my glutes started coming off the pad.
Should I be worried ? Will this pass ?