The Cochran and Dobbs certainly was at the time the gold standard.
But with the advent of improved force plate technology and the use of integrated 3d high speed film, some of their findings need updating.
The single biigest chnage has been the relative importance of the ground force in creation of power and that during impact the g force increase created by the ground/leg drive and this as the source of the majority of the power in the swing.
Modern swings have gone to lower limbs as the primary source of power, whcih was less evident 40/50 years ago.
Michael,
Go back fifty years and get some photos of Sam Snead, the squat was always part of his power.
Bob
Michael-
There is a lot of great new information out now based on new technology, there is no doubt. However there is also a lot of information that is being communicated as "new" when these idea's have been talked about and understood for many years.
"Low Point" and "Swing Direction" are two terms that are being used in a current method, and being taught as almost revolutionary ideas. In reality it's not.
Hogan wrote about all this in 5 Lessons.
Mr. Huntley brings up Snead and his famous "squat"-- Jim McLean has explained this as "body compression".
The idea of "lower limbs" being used more in the swing in the modern swing--you're right, it just started with Harry Vardon!
Check out the Venturi Analysis. Great frame by frame photo's of some of the greats--
Vardon, Barnes, Jones, Nelson, Hogan, Snead, Trevino, Palmer.
A lot of Golf pro's trying to complicate the game, and not for the betterment of the game.
There is a reason Ernest Jones lesson book was booked for weeks despite the fact he taught indoors in the the middle of New York City....