All the high jumpers I know half squat. I've never ever seen them full squat for as long as I've gone to the track. Now I don't know if they built their strength over time with full squats and then went with half squats for specialization/specificity, but even those that are weak half squat. Probably because of structure.
They all use high bar though and narrow stance.
yup, remember that "vili" guy, dunker, his protege, young high jumper.. he squatted deep, but it was rather astonishing given his leverages, looked really perfect.. but he also has the kid doing crazy heavy quarters.. so ya it does happen rarely, but the keyword is rarely.
one thing this forum does a good job at is sifting through the garbage of "train exactly like an olympic lifter regardless of your build", ie, we don't just say everyone should be ATG'n regardless of structure.. but people on here need to be really pushing the weights up.
when you read stuff like, "ben johnson squatted 600 for 8 reps", realize it was ABOVE PARALLEL OFF A BOX................... roided but one of the fastest people to ever grace this planet, he never went deep, and charlie francis didn't give a shit.
Ben Johnson's PR's in the weightroom.
Squat: 2x6x600 lbs.
Bench: 2x450 lbs.
Deadlift: 500 lbs in 1984 (but never included it after that).
Clean: His clean was very poor technically, so kept away from it.
At a bodyweight of 173 lbs.
Ben's brother was a powerlifter.
His starts were just insane.
<![CDATA[<a href="http://www.youtube.com/watch?v=cCh5QswxQ6k" target="_blank">http://www.youtube.com/watch?v=cCh5QswxQ6k</a>]]>
ya those stats are incredible..
would have loved to see those lifts, shame on people for not video taping.. harry AA FTW.
i'm pretty sure kingfish has said the same thing, or similar.. you don't get "rebound" in a half squat, sure you have leverage advantage, but you don't get any rebound.. that's a very important and beneficial aspect of half squatting.. it's a raw transition with very little "rebound effect" from the glutes/hams, ie, that big stretch going down or hitting glutes near calfs and just rebounding up.. so ya it makes sense, people who talk shit on half, who go deep, often find half squatting pretty challenging and then they act all surprised.
pc
as i progress with more volume and intensity in my explosive partials.. i find it that you will eventually create your own rebound point and improve on it more and more.. either by using heavier weight or more reps. i felt like was bouncing off something with 225 1/2s and its definetely not from hams/calves contact. muscles start to feel different.
i prefer waveloaded..im only on my 10th workout so theres more progress to be made. 
right remember I told you that? I don't think about transitioning anymore, I just do.. I get to a point where my body immediately starts trying to reverse the bar without me even needing to think about it, then i explode.
i'm pretty sure kingfish has said the same thing, or similar.. you don't get "rebound" in a half squat, sure you have leverage advantage, but you don't get any rebound.. that's a very important and beneficial aspect of half squatting.. it's a raw transition with very little "rebound effect" from the glutes/hams, ie, that big stretch going down or hitting glutes near calfs and just rebounding up.. so ya it makes sense, people who talk shit on half, who go deep, often find half squatting pretty challenging and then they act all surprised.
pc
as i progress with more volume and intensity in my explosive partials.. i find it that you will eventually create your own rebound point and improve on it more and more.. either by using heavier weight or more reps. i felt like was bouncing off something with 225 1/2s and its definetely not from hams/calves contact. muscles start to feel different.
i prefer waveloaded..im only on my 10th workout so theres more progress to be made.
it's like when we do VJ's, RVJ's, etc.. we don't really think about depth, sure at times we do when we're trying to force a certain depth.. but the majority of our jumping happens completely out of our control due to the velocities at hand.. everything is "preprogrammed", so allowing yourself to "squat that way" should be alot more beneficial to jumping imo.. teaching the body to "go deep" vs "teaching it to reverse hard slightly above parallel" seem to be no question in my opinion, i'm going with specificity.... ie teaching the body to reverse at spots more specific to svj/rvj AND recruit more mu's etc at those points.
why override those natural mechanisms is my point.. embrace them and enhance them.
when you read stuff like, "ben johnson squatted 600 for 8 reps", realize it was ABOVE PARALLEL OFF A BOX................... roided but one of the fastest people to ever grace this planet, he never went deep, and charlie francis didn't give a shit.
Ben Johnson's 600 was not off a box and it was for 8, charlie said he wouldn't let him go below that in reps because of risk
the box thing is a common misconception which stems from the video online of ben squatting 400ish to a high-ish box.
That came much later in Ben's career when he was training with someone else.
Charlie himself said this and said that Ben was not squatting to a box.
the squats were slightly above parallel according to Charlie
Well these are good news. It was expected but it's good to hear them from someone else. There probably is such a thing as "preferred coupling phase depth".
[/quote]
ya there's alot of confusion over the issue, lance even pasted something from charlie's FAq/q&A saying ben went below parallel or something.. so there's lots of conflicting reports.. I've read mostly the above parallel accounts and those are what I believe, any lower and i'm chalking it up to exaggeration/embellishing the accomplishment.
the ~500 lb box squat later on in his career was really sloppy, brutal, and scary:
video link in this thread:
http://www.adarq.org/forum/400m-sprinting/ben-johnson/peace
