It's fairly subtle and this would be where the keen eye of Icecold and the like comes into it. I don't know an awful lot about squat mechanics myself.
I think its obscurred by his belt and it doesnt help the the video isnt totally side on, but look at the angle of his tshirt that is poking out under the belt to see if you can see a difference.
I think its obscurred by his belt and it doesnt help the the video isnt totally side on, but look at the angle of his tshirt that is poking out under the belt to see if you can see a difference.