I've incorporated weighted hypers in to my deadlift night. I don't swing. I use a controlled contraction. I have quite a bit of "soreness" in the lower back for a few minutes afterwards. It feels good to bend around afterwards. It does not hurt, but it does give that different soreness that only the lower back produces. I'm currently using 40lbs held to my chest for 3x12.
As a deadlift assistance, is it most beneficial to be maintaining a locked natural curve in the back, or do I relax and allow the back to round at the bottom?
Should I literally hyperextend my back a bit at the top, or just raise to the maximum range of a normal locked lower back?