I wanted to see if anyone out there has overcame, over the course of time, poor thoracic mobility? Specifically, did you have a slightly rounded upper back (kyphosis maybe?)?
I offer to you a video of my recent Deadlift PR, at 382.5lbs. Please note my upper back before even lifting. Granted, there isn't a good view of me simply standing straight up, but you can see the slight curvature. Also, when in the starting position, I'm very much pushing my chest out as much as possible. (I'm sure I'll get some people commenting on form, but I'm more questioning my posture/mobility)
Since seeing this video, and knowing that I have crappy posture, I researched and found that thoracic mobility could be the issue. (Also note: I can't properly execute a front rack position, which may be because of this too). I tried this set of exercises for the first time last night and it felt wonderful. It was like I had Gumby's spine afterwards.
(I fail the "test" on the first picture. I'm easily 6-8 inches short of the floor with my wrists).
How long does such a thoracic flexibility regime take to see some results? 3months? 6 months? Maybe a year?
I'm going to continue this for the foreseeable future, and see how it goes.