I've been working on deck squats and watching the course video. Mine aren't nearly as pretty. I don't have time to record a form check today, but I have a few theories on what is going on:
1. Legs crossed or knees spread. This could be a lack of hip mobility, especially internal hip rotation. As I roll up, my natural inclination is to cross my legs. If I can avoid that, I often end up with one foot overlapping the other and my knees spread wide. It could also be related to the next issue.
2. Thumping hips and shoulders from a poorly-rounded lower back. I'm guessing that this is due to a lack of abdominal contraction. I need to build a stronger posterior pelvic tilt. I think that the thumping is slowing me down enough that I lack the momentum to get my center of mass up and over my knees.
I come from a powerlifting background and have always practiced "knees out" when squatting. Squatting with my feet and knees together is pretty difficult for me. I also have spent a lot of time practicing to not round my lower back ever. I stand straight with balanced hips, but I experience stiffness that makes posterior tilting difficult.
I probably need to work more on arch body holds, and maybe even just practice smooth rolling back and forth for deck squats.
Do these things sound reasonable? Any other suggestions?
Thanks.
J.