[quote]SteelyD wrote:
Am I missing something about Janda situps? Is the whole idea to keep your feet flat on the ground while doing situps with knees bent @ 90 degrees or so?
I just wedge my feet under the couch and the base of the couch keeps my feet and toes pinned. Is that essentially what the Pav thingy does?[/quote]
Even if you don’t buy his book, in the free user guide instructions on the site: http://www.dragondoor.com/pdf/p12_quickstart.pdf
He explains why this is different. Putting your toes underneath the couch is an anchor that allows you to use your hip flexors to pull with. It’s the exact reverse of what the device does. The explanation’s on page 2.
[quote]Racarnus wrote:
When you squat, antagonists (quads and hamstrings) are both active. So much for antagonists can’t be active at the same time.
And why can’t you learn the motor control to avoid tensing up adjacent muscles? Pavel says your biceps will flex when you make a white knuckle fist. I was able to make my muscles white without any bicep tension.
And the hips DO flex during this pavelized situp. So the hip flexors couldn’t have been shut off. Yes, there are other hip flexors besides the psoas, but why would this exercise shut off the psoas and not the remaining hip flexors?[/quote]
I can’t remember which book, but I remember there was an explanation about how reciprocal inhibition works differently for compound movements versus isolation movements. As in, when you’re only bending in one direction (in this case, it’s all forward flexion of the spine/hips) it works differently than when different joints are flexing and extending (like with pulling or pushing movements that can handle huge weights). In the case of a squat, it seems like the quads inhibit the hamstrings functioning as a knee flexor (though it still does this a little bit to help the quads relax enough to sink down) but especially on the way up, it converts the hamstrings to working as a hip extensor. It’s like they stabilize the movement and their function changes as needed or something. I don’t understand it very well.
I think you’re right, you can learn to use muscles in isolation and diminish irradiation, but the key is “learn” in that I guess it’s not what we instinctively do. Avoiding instincts is difficult, and he even relies upon harnessing them to make us stronger, so teaching to relax when trying to be strong could be tricky… so I guess that’s why harnessing nerve system tricks to deactivate the muscles might be a simpler approach than trying to learn muscle isolation which takes a very attentive willpower.
The final question about selective hip flexor deactivation’s a good one… I don’t fully understand it. What I figure is… he wants you to shut off ALL the hip flexors in the first part of the movement and use the abs alone. Then, one the spine is flexed as much as possible with the abs, is the point where you can then use hip flexors to continue moving up. At that point, you’re right, I’m not really sure why the psoas wouldn’t pull…
[quote]Enjoy The Pain wrote:
Well, I think trying to isolate the abs is stupid anyway. I thought Pavel was against isolation work? To me it makes much more sense to do exercises like squats, deadlifts, standing overhead presses and rollouts, maybe hanging leg raises, dragon flags and front levers. You abs will contract maximally but also work in conjunction with the hip flexors.[/quote]
He does encourage all these things in the book. The Janda crunch/situp is something done before to help strengthen the abs and wake them up because he thinks they’re inactive or weak in too many people. Once they’re strengthened is when it’s advocated to move on to using in unison via dragon flags and such.
[quote]Cprimero wrote:
In one of his newsletters pavel refers to the “full contact twist”-(Stick the end of a barbell in a corner and pivot)as his favourite ab excercise- so save your money and try that.[/quote]
I think that’s because Pavel lurvs oblique exercises, they stand out in an age where there are a lot of bodybuilder memes like “avoid oblique moves to keep your hourglass shape” and such. This is a spine twisting motion and the crunches are a front flexion motion and side bends are a side flexion motion, so all 3 seem like good ab/oblique things to train (plus obviously stuff like various deadlifts and all for the spinal extension, etc).