Manna Questions

I'm not sure on these:

I answered the first but don't have enough experience for the second sorry

Jesse Kim is a dreamer, I don't think I've seen a post of him training, always chasing some obscure detail.

First one: simple because the shoulder extension pomoted in manna  increases the bicep tendon tension as the full extension is achieved gradually as you can see in the IM. on the other side on the back lever the tension on the elbows my far more and more higher compared to the manna, simply because in manna we are supporting while in back lever we are suspending and in case of tight people they do not have necessary extension and the tension in the bicep is higher and higher as the body moves horizontal.

Second thing, back lever due to its nature promotes the forward migration of the upper arm head. if we do not have necessary shoulder extension and external rotator + muscles that pull back the scapula we risk with the time the upper arm pops out from the socket.

yesterday there was a guy in riccione who for 4 years never done mobility or work for muscles balance. during an assisted maltese his upper arm head popped out from shoulder. end of his competition. that's makes sense.

Basically we do not need to give this type of explanation because this is not a school or university. 

from my pov say what they need to know: bicep tendon different stress and shoulder extension that must be previously mastered (at least the shoulders extension). no more.

Second post: to tje resist the weight we can work on 2 things:

-wrists flexor (radial and ulnar)

-finger flexor

do not confuse them. during manna on the floor the wrist flexor works a lot coupled with fingers flexor that aren't in the best position to resist the weight since they are fullt stretched. for this reason in therms of grip the floor version is harder BUT you can easily externally rotate the upper arm and make the retraction easier. as  a consequence this second factor has more relevance making the exercise easier on the floor

on the pbar the wrists flexors are not working on neutral grip (maybe only bit of stabilization) but the grip is ten times stronger due to semi-elongation of the wrist flexors. unfortunately due to the grip the elbows tend to rotate inward making the internal rotation  more natural then external rotation. this configuration makes the retraction harder. this is the same reason of why L-sit on pbars with open chest is so hard on pbars.

no reason to give all this explanation. Coach Sommer's post it is enough.

Thanks Alex 

Excellent, those2 points (wrists and parallel grip) were what I initially wrote before realising I wasn't working on enough experience with it to post. Getting my eye in gradually!