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Video for MA practice (Turn Shape)

post #1 of 6
Thread Starter 
Location: Sugar Bowl
Run: Donner's way
Conditions: Mid day spring Sierra soft with hard pack under. partly skied out
Type of run: This is a black diamond run (usually groomed but one of our steeper runs)

Video Clip

Let's break this down by Turn Mechanics

Turn Shape,

I see a skier that is making Short/Shmedium radius turns Skidded almost j-shaped turns.
The turns seem to be open parallel with an occasional abstem (Cause or affect?)
post #2 of 6
This skier has a lot of issues. As for the turn shape issues, I'll give you my impressions and that is that what we are seeing is the late-mid afternoon result of very defensive skiing throughout the day.

If you will note the skier's turns to the left and right are very different. The turns to the left are accompanied by an almost hockey stop followed by a what I would call a counter turn, i.e., a turn that goes somewhat up hill and produces a stall. The turns toward the right are much less across the fall line. The skier picks up speed turning toward the right and then disapates it with the almost hockey stop finish of the next turn. I'd be willing to wager that the skier's left quad is fried from doing very defensive skiing, i.e., a lot of braking in both kinds of turns, (left and right) and he just doesn't have it in him anymore to do that when turning to the right.
This guy needs to learn to ski without the braking movements.
What do you think?
post #3 of 6
Phew! I thought I was going blind. At least you saw what I saw, Lou. The reasons are interesting. I hadn't thought of it as a muscle issue.
As I said to Dchan, videos of this sort need a lot more control of the environment to come up with MA. If he wasn't tired, for instance, the MA is quite different.
post #4 of 6
First off I do not see a skier that is necessarily tired. I see a skier that has pretty good posture with the hips being up over his feet for the most part, good width between the feet and seems to be somewhat in balance from the beginning of the turn until he reaches the fall-line.

Since the topic is turn shape, yes, there is some work to be done in this area. Lou is correct to say that this skier has two different turns from one side to the other. I like the right turn where the skier is showing more turn shape than in the left turn. In the right turn, the skier looks as though he is making a move across the skis with the hips, releasing his edges and allowing the ski tips to move towards the new turn. The skier stands in balance pretty well through this turn and keeps his hands forward. The skier could complete this right turn a little more across the hill adding more shape, but even without it, he has controlled his speed pretty well. As for the left turn, there are several issues the skier needs to work on. The turn starts with upper body rotation which in turn is causing a lot of energy to be transmitted to the lower body. With an up move and the energy developed from the twist, the skier now allows the skis to move ahead of the upper body, down the hill and then he twists or rotates the feet across the fall-line and jams on the brakes. At the point where the skier has his feet across the fall-line, the skier is very tall, inside and out of balance. If the skier didn’t get a little resistance against his edges at the bottom of the turn allowing him to catch his balance, IMHO, he would go down, falling to the inside. The left hand has a tendency to drop and come back which also adds to the rotary issues. DCHAN mentioned ad-stem. I don’t really see much of this, but if there was some, I would have to say effect.

The fix, I think this skier should take his turns into gentler terrain like blues and preferably groomed tails and work there on the turn shape. Since the right turn seems to be his best turn, I would have this skier focus on what he does to make this turn happen and then apply the same moves to the right turn. I would try to video this skier and show him the differences in the two turns because a lot of times, the skiers just do not feel that there is a difference in the left and right turns they are doing. This skier will need some coaching to help him understand and feel where and when he is doing some of the negative moves that effect his skiing. But the biggest thing, IMHO, is that this skier needs to work most on the shape of the left turn and stand in balance better going to the left.

With good coaching, this skier will be back making turns in balance with good shape in no time. : ----------Wigs
post #5 of 6
The turns seem to be open parallel with an occasional abstem (Cause or affect?)
Very ignorant question, but please have patience with me, folks. What exactly is "abstem"? I see this term bantered often. Seems in many instances many disagree if the individual in question is actually doing an abstem or not. So now I am really confused. What exactly is "abstem"? Thanks!
post #6 of 6
The skier is making two differently shaped turns. The left hand turn is a severe "J" turn.

The right hand turn is rounder, but is not completed.

The speed gained by the RH turn is disipated by the LH J turn.

Both turns are skidded, the LH turn severely, as pivotting is maintained throughout.

The RH turn is also pivotted, but the pivot is early, and sometimes properly balanced/coordinated with the upper body giving better shape to some of those turns. Some RH turns are pivotted too quickly.
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