From what I understand, you should have a posterior pelvic tilt (non-arched lower back) , when you hold the position.
My question is when you enter the straddle planche from straddle L or from L Sit or support, I imagine the process is:
1) Lean forward till hands meet hips
2) Lift legs to level with hips
3) Hold with posterior pelvic tilt.
For step 2, should you be lifting legs with arched back (anterior pelvic tilt) or non arched (posterior pelvic tilt) back? I find it easy to lift with arched back , and then squeeze my butt (enter posterior pelvic tilt) when I enter the position.
A corollary is, when you do a Young, do you lift with hollow back or arched back? The end position (Planche) is hollow I imagine to lock it in place, but what about the lift?