One of the key SS concepts is "hip drive," which I understand to be using the hips to power out of the bottom and through the sticking point in the squat. Recall the picture of Rippetoe on a ladder holding a chain attached to a trainee's ass. My mental image is of a fixed back angle rising out of the hole and through the sticking point, driven by the hips.
(Personally, I have a weak trunk and this leads to pseudo good-morning squats when the weight gets heavy. This seems to be a common consequence of this cue. Nuckols thinks the problem can be solved by stronger quads, cf. https://www.strongerbyscience.com/fixin ... ing-squat/. I'd be happy to discuss this here, but it's not the main point of the thread.)
In short, my understanding is that the SS model has the hips driving up through the sticking point while maintaining torso angle.
Enter Greg Nuckols. See point 3 in this essay and the accompanying videos:
https://www.strongerbyscience.com/the-s ... -about-it/
He presents an interesting case for cuing "hips forward" and "shove the traps into the bar" instead. An SS acolyte shows up in the comments to argue with him, and while the entire exchange is interesting, I would like to extract the following comment:
Two questions. The second is more interesting.Greg Nuckols says
December 2, 2015 at 4:48 pm
“Hips forward isn’t a good solution as it slackens the hamstrings”
That’s not an overly relevant consideration, as the hamstrings hardly change length at all through the squat, due to being a biarticular joint.
“and increases the moment arm acting on the knee joint”
Which is a good thing through that ROM. RME for the knee extensors is lower than it is for the hip extensors through the sticking point, so shifting some of the work back to the quads balances the work between the knee and hip extensors and makes it a more efficient exercise.
1) What do you think of Greg's argument for cuing "hips forward"? (You'll probably want to read the link and the exchange in the comments to understand his position fully, as it relates to the SS cue.)
2) If Greg is right and hamstring tension is only a minor factor in the squat, does this invalidate the usual SS argument for fixing the knees halfway down and preventing "knee slide" in order to better "bounce off the hamstring tension" at the bottom? Obviously letting your knees go haywire is a bad idea, but most people I see squat have their knees travel forward and back continuously and smoothly throughout the movement instead of fixing them partway down (or, God forbid, using a "TUBOW"). Greg's comment would suggest that continual movement is not actually a disadvantage in getting a bounce out of the bottom.
Personally I have never been able to feel any advantage from fixing the knee position on the way down, but then again I'm quite bad at doing it and it seems awkward to me.