Because of your education!!!!.

You let the cat out of the bag too often before the poll. Should've had it before all the Pivot Wars began!!.

annikan- can you please explain how the 4 sections of the spine precisely change in relation to the 3 planes throughout the swing (for eg: by the halfway point in the backswing the cervical has ------ relative to the lateral plane, -------- relative to the sagittal and ------- with respect to the transvere, while the thoracic has ... etc.) to maintain the steady pivot center. thanks.

Let's start with one section at a time.....then later we'll put it all together!!!

1. Neck...Cervical Spine
2. Upper Back...Thoracic Spine
3. Lower Back...Lumbar Spine
4. Pelvis...Sacrum


Which one?


I'd start at one end or the other!!!!

Is #4 what the dude in the picture has going on? Hey dude . . . NICE SACRUM!!!

ok, cervical or sacrum whichever you feel is the better starting point ...

LATERAL SAGITTAL TRANSVERSE

address
startup
backstroke
top
startdown
delivery
release
impact
follow-through
finish

[quote=annikan skywalker]Really... At first glance...perhaps....maybe looking at it from a different perspective might help to reevaluate....

In reality the spine is never in a perfect straight line condition. What I was meaning to convey (and others have subsequently) that the lowest point of the spine and the uppermost point remain in the same place and if a line was drawn through those two points, that would represent the spine angle (someone mentioned torso angle that better represents the idea IMO).

First of all ...we are all built differently than each other....But I fel we should work from the bottom...let's just study the Pelvis and the sacrum first...



Notice the Neutral Postion of the pelvis is approximatley 30 degrees..

Let's first discusst the motion of the pelvic girdle with Anterior Rotation and Posterior Rotation of a NON Golfer...

then let's applly this to a golfer...throughout the next few weeks we will begin to discuss each segment in each plane and it's axis of rotation through each section as suggested by djd...so we will move slowly....so noone gets lost....

Question #1. Anterior Rotation(Forward) of the Pelvis affects the Lumbar Spine Motion and the left and right hip in what manner?

Anterior Rotation Extension of the Lumbar spine....Flexion at the right and left hip respectively.....Anyone know what that looks like..Pick A, B, C, D, or E

Rules of Engagement
 

Rule #1
We will use markers on each of the major joints and draw plane and axis of rotation.(As indicated by the red dots and yellow lines)
Rule #2
We will use a "qualitative approach which describes the motion as opposed to a quantitative approach which is measured to the degree of motion. ( for instance slight amount of flexion rather than 10 degrees of flexion)
Rule #3
Different types of stroke patterns have similar but in some cases different movements
Rule #4
We will work through this one segment and section at a time
Rule #5
I do not have All the answers...So if there are any experts in the field of Kinesiology or similar field...feel free to contribute insight...


Most important rule...let's have some fun

So let's look closer...

Here's the rule



Apply the rule

Angles
 

Sam's PELVIC ANGLE appears to be about the same as the CLUBSHAFT ANGLE. His EYES appear to be on an angle where they can easily locate the ball.