[quote]buffalokilla wrote:
wufwugy wrote:
i’ve heard and seen some references where world class OLers are doing, or beginning to do, this. perhaps because pulling the knees in puts the adductors in a better position, mechanically?
Seems like they’re throwing caution to the wind to put up ever bigger numbers. Knees buckling in is indicative of weak hamstrings and glutes (usually), and it puts a LOT of stress on the MCL. However, putting more of the stress on the MCL allows that much more to be handled by the musculature. That’s just a guess, though, I’m not sure of the reasoning of the coaches.
Sometimes it just happens, though, when attempting max weights. Form breaks aren’t terribly uncommon at maxes, after all.
Oh, I tried your tests. Got my hams fully pressed against my calves with no lumbar flexion, felt perfectly stable. There was a slight forward tilt facilitated by hip flexion to keep my center of gravity over the middle of my feet, though (no change in relative position of the lumbar vertebre to the pelvis, it was the same as when standing straight up - I had someone put their hands there to feel for motion). If I got under a max, though, I might falter a little, as weaknesses would show through. There shouldn’t be any trunk flexion when squatting, and there should be full extension - not hyperextension, though.
I agree with Mike, I think the whole thing started from a terminology mixup.
-Dan[/quote]
wufuguy-
Great tests and great pictures.
However, on the pictures, you don’t see Dimas from the side, so it’s hard to tell EXACTLY what his lower back is doing. One might (incorrectly) make the argument that since his stomach looks flat, he is actually pulling in to activate his TvA.
Completely different topic, I know, but in the same vein…Perhaps what you are seeing from that 45 degree to the body vantage point that his pictures provide is well developed lumbar erectors. (If you look at the stripe running down his torso and leg, it doesn’t APPEAR to bow in just above the hip, indicating that his trunk is still “neutral.”)
Also, how much weight is he snatching? Is it limit–a PR or WR? There is subtle and slight deviations in form at those weights. So, it is POSSIBLE that his lumbar is flexed, but unlikely. As a former competitive weightlifter, I can tell you that if your back rounds (trunk flexes) on the catch, you’re going to have a very hard time on the recovery. So try your broomstick test with a bar loaded to 315lbs–if your butt tucks/torso flexes, you’ll probably drop the bar in front of you.
Remember, just because someone “great” does something, doesn’t mean it’s correct. In fact, two contrasting examples: I have video tape at home from '82/'83 Weightlifting World Cup and World Championships respectively. They show from the rear, Pisarenko, the USSR’s Super from the time snatching. In that video, he definitely does not flex his trunk.
Conversely, if you watch Blagoev the 90kg lifter from Bulgaria on the same video, it “appears” that his trunk does flex on the snatch. The video shows the side view and the front view. (I don’t think I can upload these videos because I’m not technoligically inclined–but I’ll ask around if you’re interested in seeing them–so you’ll just have to take my word for it.)
After watching his videos, Dimas also collapses slightly into his right glute at the catch of the snatch and the clean. Using your reasoning, we should infer that we should also collapse into our right glutes during a full squat? Obviously not. Granted, Dimas is a GREAT weightlifter, perhaps one of the greatest ever (Kakisvilis also won 3 Olympic golds…) but limit weights change technique, even if ever so slightly…
For grins and giggles, try this experiment: Perform your broomstick test. Then stretch your psoas, gluteals, hip external rotators, and hamstrings. Perform the test again by initiating the motion at the knee instead of the hip. Actively pull yourself into the hole using your hip flexors. Maybe have someone watch you do it to see if there is any change or perhaps video yourself. It would be interesting to see if there is any change. From (a lot) of personal experience, I know where I’d bet my money…
As far as weightlifters pulling the knees together when squatting, sometimes that’s the body’s intuitive way of trying to recruit the AB-ductors–the glutes. Pulling the knees in coming out of the hole pre-stretches the glute max and hip external rotators, a sort of stretch-reflex if you will. If you watch closely, the knees really won’t track much past the big toe. If they do, the body is indicating that it can’t recruit the abductors (reference buffalokillas’ remarks about weak glutes and hams) and the squat will finish almost like a good morning with the knees straightening earlier than the hips.
Hope that helps.