ATG Squats. Is the buttwink broscience?

[SpiderDan]

From my recent experience of "as deep as I can go squats", which may or may not be ATG but definitely way below parallel, I do not get any buttwink in the hole. I used to get it in squats even at parallel, you know what seems to have solved it?

Squatting more.

I havent done any extra stretches or mobility work more than I'd normally do and the problem (if its a problem) has vanished.

My warm ups prior to squatting now consist of little more than 2 x 10 glute/ham hypers, a few bw lunges and cossak squats and finally just a set or two of bw squats.

I can now squat just the bar with good depth and form (used to need 50-60kg to get to parallel)

Furthermore my lower body stretching routine on my off days i just use the yoga pigeon pose and a squat stretch....I dont even do that much foam rolling.

Now regarding John Broz, he's unconventional but gets good results from his athletes. I think given he trains olympic weightlifters (primarily) most of the squats seem to be a very fast descent and rebound, they spend very little time in this "buttwink" position and they will lose very little if any power. However, if you dive bomb a squat you better make sure your supporting structures (i.e. lumbar spine, joints and connective tissue) are up to the task or you could get damaged.

Now for anyone who just does just regular squats that tend to be slower on the descent and turn around they will spend longer in the "buttwink" position losing the power in the stretch and contraction of the hamstrings....and in these cases maintaining control of the hips to prevent butt wink will probably lead to a stronger squat.

Not sure if thats rubbish, but it seemed to make sense when I typed it!

[Big Lench]

Whenever i lose focus when im tired and let my butt wink my lower back lets me know about it pretty quickly. Normally even before i finished that session, with some pain and aching. Its normally ok the next day and I've not had any major problems or anything but yeah its definately not a good pain.

I think it may also it may be a good way to herniate a disc. If you don't maintain the arch loads of pressure gets put on the inside edge of your spinal discs when your back rounds (butt wink or back rounding in the deadlift also) which then squishes everything between the discs out of the other side of your spine.

Example: Redirect Notice when your back rounds the edge on the left of the diagram (the inside edge of your spine) kind of pinches together like one of those wooden snakes made up of loads of segments do when you bend them and then if your unlucky, pop. The squishier stuff gets squeezed out of the gap and you have yourself a Herniated disc.

Im not sure how right it is but i think thats how it normally happens from what ive gathered.

[SpiderDan]

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Whenever i lose focus when im tired and let my butt wink my lower back lets me know about it pretty quickly

I agree with that, I think most peoples issues arent flexibility or mobility problems, just a lack of awareness or control.....either through not knowing the movement properly or general fatigue.

[Mart001]

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Something which stretches gains tightness.

you should 2nd check this but I'm sure they shorten at a very low position, they strectch as you run pass parellel and some more then if you keep on going lower they begin to shorten