Quote:
Originally Posted by yeotaJMU
Hips are too low in the DL starting position, which can be seen because your hips shoot up first before the bar breaks the floor. This also indicates a lack of systemic tightness. You want to load up the hamstrings more in the starting position. Read the deadlift setup post above yours.
What sort of squat are you trying to do? Looks like a high bar placement? Knees out harder, stay tight in the back through the bottom portion of the lift (probably by slowing down the decent marginally), chest up out of the hole. The bar is drifting forward at the bottom because you are losing core tightness (bar path is a curve, you want a straight a line as possible). Your knees slide forwards at the bottom on the latter reps, you want them to be as still as possible to keep the tension on your hamstrings out of the bottom. You could probably sit back further to ameliorate this, but that is a bit inconsistent with the bar position you have so I don't know. An HBBS'er might chime in.
Out of interest, have you read Starting Strength?