Max_501 wrote:In your montage the knee flexes between frames 5 and 6 and there appears to be some pullback at that point. Is this the typical movement pattern found in the video?
That specific movement pattern is not typical for the video -- usually he extends at the transition -- consistent with my statement that he doesn't use PMTS timing (in this case for extension and flexion). However, it is not a fluke either -- Lipton does this on a few occasions in the video -- indicating he does have this within his underlying skill set, should he choose to use it (that's all it was meant to illustrate). What is typical for the video, however (and this is what I was trying to get at) is that throughout it he shows strong dynamic fore-aft balance correction -- most skiers moving that fast over such rough snow would alternate between being rocked back on their heels and folding forward at the waist. Lipton shows none of this. I don't think Lipton could be doing this unless he were micro-controlling his fore-aft balance using foot movement; if he were instead controlling his fore-aft by balance moving his hips and upper body, I believe he'd look very different. [N.B.: you can't see the micro-corrections directly, which is why I had to use the grosser example shown in the montage to illustrate his ability to adjust fore-aft balance via foot movement.]
So how does this relate to PMTS? Well, in Ch. 7 of Essentials, HH breaks down the fore-aft balance Essential into the following progression of skills:
1) The ability to sense fore-aft balance. Lipton clearly has this.
2) The ability to find Home Base. Lipton clearly has this as well.
3) The ability to adjust fore-aft balance using foot movement. I've argued Lipton must have this as well, and at a fairly high level, given the speed and snow conditions.
4) As a refinement of no. 3, the ability to adjust fore-aft balance using single-foot pullback rather than a two foot pull-back. Typically Lipton doesn't show this, as evidenced by the frequent lack of management of inside ski lead.
5) The ability to use no. 4 specifically at the transition, properly timed in coordination with the other Essentials, as part of turn initiation. Lipton doesn't appear to do this, which is why, in broad strokes, his skiing is not PMTS.
So in summary, I would say Lipton has 3 of the 5 components of the PMTS fore-aft Essential. I.e., I would identify these as the areas is which Lipton's skiing is not different from PMTS, even though his overall skiing is (different). OK, teacher, I'm ready to be graded on my assignment
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Max_501 wrote:What happens after frame 6? What does PMTS teach for the top of the turn?
That's a very broad question -- all sorts of stuff happens after frame 6 (e.g., he doesn't control the rotary forces, lack of CA/CB, etc.); and PMTS teaches a book's worth of material for the top of the turn -- so could you please be more specific?