Originally Posted by
veryhrm
I'm going to go in somewhat of a different direction:
Other than the back rounding things look ok, i would say. Room for tweaking yes, but i'm not sure where this whole "omg?! where'd you learn to squat?!" sentiment is coming from. (perhaps i'm reading too much into some of the statements).
i have no idea how anyone is judging depth on this video. You're wearing black pants, the hip crease in the bottom position is being obscured both by the vertical piece of the rack and by the weight plates AND the video is shot from a high vantage point which makes it additionally difficult to eyeball. (have the person filming you take a knee, for example)
SS certainly does talk a lot about keeping your knees from going too far forward. For example p14 fig 2-9 caption "knees should be just slightly in front of the toes" which shows the front-most part of the knee being about an inch in front of the toes in the plane of the foot. He later says more about it but generally one gets the impression that knees too far forward are the bigger problem (due to killing hamstring involvement and all the good stuff having to do with that)
That said, i do think you're keeping your knees too far back by a few inches. And, as several people have mentioned, you're unhinging the hips first and the "very useful block of wood" thing could help you get you timing right.
Now... to keeping the low back in extension ... it's something i've had / am having trouble with and i found that for a long time i wasn't shoving my knees out as much as i thought i was... especially starting from the top. Once i started doing that things got better. I also am doing some hamstring and hip flexor stretches ... but don't know the impact that's had.