[quote="ninearms"]Last one is the best, in part because the bar is where it should be - over the base of the toes. IMO however, the problem is probably more to do with thoracic mobility, possibly lumbar strength and probably hamstring flexibility. This is a still from the frame after the bar leaves the floor:
Your back is already in flexion at this point, and you're never going to recover from that. Even before the bar leaves the floor you never have a tight arch in your lower back. I suspect your head position doesn't help either. Not only does looking up that hard increase the strain on your cervical spine but it's likely to trick you into thinking your chest is up when it's not. You're looking at a point on the wall in front of you rather than keeping your head more neutral and looking at a point on the floor about 3m away.
Even though the angle isn't optimal you can still see my lower back is in extension and my chest is pointed forwards rather than down.Slow-mo of the same lift
A few tests for you to try:
- What's your hamstring flexibility like? My guess is that it's poor and you end up using back flexion to get the same range of movement.
- Can you do a full depth overhead squat with an empty bar, and if so what's the narrowest grip you can use?
- If you lie on the floor with your arms above your head can you touch the floor with your hands?
C'mon mate you're not the best deadlifter in the world.....