Official 1st Annual Manziposium Thread (now with a dozen things that happened)

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Thanks Ringer, good stuff.

I was particularly proud of when I asked Dr. Neal "Does the right leg drive the hip turn, or does the left hip pull." He concurred that the right leg drives and the idea of a left hip pull is faulty. :eek:

Shear force is our friend.
 

dbl

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Thanks also.

Weight seemed to be an inaccurate term. Force plates measure force acting on the ground. Before you jump, you actually make yourself lighter because you aren't resisting the ground as you squat. Then when you do jump, you have to push with more force than your body weight otherwise you would not get off the ground.

Exactly what I thought. And "where the center of mass" is, also a good reminder.

Now, to go check my right leg!
 
I was particularly proud of when I asked Dr. Neal "Does the right leg drive the hip turn, or does the left hip pull." He concurred that the right leg drives and the idea of a left hip pull is faulty. :eek:

Shear force is our friend.

Was a particular type of pivot used as a basis for the answer to your question?
 
A couple. David Lee was there from Gravity golf. Nice guy and well spoken. I respect what he has done but honestly there were some uncomfortable moments. The force plate work that has been done sorta made for some issues. I don't really want to divulge any more than that.

Oh boy, LOL. Based on what he says about the golf swing, there must have been huge issues. His presentation has a beautiful array of "intelligent sounding" things about the way the brain works mixed with completely mistaken assumptions about the basic laws of physics. And, it's all delivered with a kind of "aw shucks, I'm just talkin' good ol' country common sense" type of speak.

That's not to say he can't get some people hitting the ball better. I think he does well with a lot of students.
 
I was particularly proud of when I asked Dr. Neal "Does the right leg drive the hip turn, or does the left hip pull." He concurred that the right leg drives and the idea of a left hip pull is faulty. :eek:

Shear force is our friend.

Yes, dittos on that. Without being able to twist our feet against the ground, we essentailly have nothing. Stand on an office swivel chair and you can hardly move the golf club at all. You can't even make half of a backswing, let alone a downswing. You can move your hips from side to side, you can push up and down on your left leg (S&T), but you can't create any shear force, and thus no swing.
 
Yes, dittos on that. Without being able to twist our feet against the ground, we essentailly have nothing. Stand on an office swivel chair and you can hardly move the golf club at all. You can't even make half of a backswing, let alone a downswing. You can move your hips from side to side, you can push up and down on your left leg (S&T), but you can't create any shear force, and thus no swing.

We didn't really outright get into it, but if you just keep your weight on your left leg there is very little ground shear to push the hip turn with. Everything is stacked over the leg. All you can really do is push up as you said. You need that shear force to drive the right leg with and adds power to the very first part of the kinetic link.
 
We didn't really outright get into it, but if you just keep your weight on your left leg there is very little ground shear to push the hip turn with. Everything is stacked over the leg. All you can really do is push up as you said. You need that shear force to drive the right leg with and adds power to the very first part of the kinetic link.

All good stuff. But put this idea together with the distinction between weight and force, and things get muddy. At least, they do for me...

I can stand on my left leg, raise my right foot off the ground and then drive it back into the ground with enough force to jump sideways, and I can do it without moving my CoG back towards where my right foot contacts and drives against the ground.

Not saying that's optimal (doh!) and it's obviously a wild exaggeration of anything that I'm aware of anyone teaching - but thinking about how that move would register on those force plates is illustrative of some of the issues.
 
Great. Now I have another video to buy.

Well I for one wanted to be there in person very badly and once released I will cherish this video rewatching it over and over.

And I will always be in line for all other material from Brian.

Thank you Brian for making that choice and for all that you do for the instructors out there. See you at GTE #2 soon!!

Steve

PS I wish I could have been there for the Finney moderation of Brian!!;) Too funny stuff
 

Dariusz J.

New member
Weight seemed to be an inaccurate term. Force plates measure force acting on the ground. Before you jump, you actually make yourself lighter because you aren't resisting the ground as you squat. Then when you do jump, you have to push with more force than your body weight otherwise you would not get off the ground.

Again, weight is a force (mass x gravitational acceleration), thus, it is a very accurate and useful term provided gravity is constant - which is constant unless you intend to leave our planet. The same accurate term as mass in a given environment (gravity). Never say that weight is an inaccurate term then.
I said "again", since I said it all in a thread about weight shift not so long time ago. It is no rocket science we do not need any symposium to know such basic things. When you jump your weight is not constant because you add forces which orientation vectors are pro or contra gravity.


Shear force is our friend.

Oh, yes. A very good friend :)

We didn't really outright get into it, but if you just keep your weight on your left leg there is very little ground shear to push the hip turn with. Everything is stacked over the leg. All you can really do is push up as you said. You need that shear force to drive the right leg with and adds power to the very first part of the kinetic link.

Well said. The scenario of using rear leg horizontally oriented forces vs. lead leg vertically oriented forces is much more effective from the biokinetical point of view. Needless to say that the more horizontally oriented the force is the more room is for benefitting from shear forces and, consequently, torques.

Cheers
 
PS I wish I could have been there for the Finney moderation of Brian!!;) Too funny stuff[/QUOTE]

No moderator needed this time. Mr. Finney was rather restrained this trip. Very few, "oh no this is getting uncomfortable" moments of debate.
 

Jared Willerson

Super Moderator
I really figured this would be a 20 page thread by now.. Why is everyone so mum? How many people were there? What were the topics?

So far we have David Lee....that's it, what else happened?
 
I am really surprised this thread is not hopping myself. I am assuming the attendance was fairly light, I think it was an excellent decision to video it and help defray some of the cost. When can we look for the video to be up for download?
 
Me, too. And I think a lot of people that went don't want to give that info out since they paid $250 for it (not including travel expenses) and with the video coming out. I'd be averse to discussing it a lot if I were in their shoes.







3JACK
 
Mostly travel reasons and getting back to normal schedule....also, it may have to do a little with respecting those who actually showed and spent theirnhard earned bucks.....that being said, the good stuff will come out in time...

As far as attendance, we did fine...I'll let Brian get more into that if he wants to......whether we had 3 or 103 isn't the matter, the ones who showed and the ones who are anxious about the release of the video are the real seekers..

I have a feeling we will do many more of these in the near future
 
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