Is flexibility genetic/joint-shape dependent?
Asking because during convential DLs or narrow stance squats, I feel my hips literally crush my hip flexors when the hip goes into full (for me) flexion. As such, I'd guess this not due to anything being tight...
I can keep a ~flat back (somewhat hunched T-spine) when doing conventional DLs, but:
- I am not able to keep a flat back while keeping the T-spine straight
- if I go up an inch or two (reduce flexion at the hip), I can truly arch my back - it's just flat/slightly arched if I pick the bar from the floor (competition height)
- during semi sumos, I can keep the back arched but only if my shoulders are a little in front of the bar; trying to keep the shoulders directly above or behind the bar resulted in my back flexing
Any help greatly appreciated.