Added: 2 years ago
From: jonboylou
Views: 12,094
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  • what song is this?

    

  • Sorry, I am not asking about biomechanics, I'm asking about simple words that describe basic movements. It's possible you don't use movements to describe what is happening in skiing. In that case it's logical that anyone would be confused without knowledge of insider jargon.

  • Sorry this is not about biomechanics it's about simple words that describe movements.

  • Keep it more in the fall line

  • In the video it says: speed control comes from line and turn shape. Why is it that I see speed control coming from late edge hits and edge sets? Am I missing something?

  • In the video this graphic comes up: "Extension movements allow shaping", interesting statement, given that when the legs extend they can't create angles or rotary movements, so shaping, must come from leaning or hip twisting? Is there another explanation?

  • @skiwhh This simply refers to the fact that the legs extend to to match terrain variations and facilitate ski-snow contact and "shape" to the turn. Legs can continue to rotate as they extend. Depending on the joints that are extending there is still the ability to create angles between the legs and body regardless of flexion/extension

  • @jonboylou I like to see the exercise you have to convey the explanation you just gave. Whenever someone starts an explanation with the word, "simply" and then totally loses me with words that are confusing, I get worried.

  • @skiwhh Harald, I am sorry that you found my statement confusing. It is unlikely that you and I will resolve a debate on biomechanics through this forum so I will not continue. If you wish to discuss this further please feel free to contact me through PSIA-RM. Regards, Jonathan

  • I appreciate your statement. There is no reference to hip angulation here.

  • @jonboylou In the video, this statement is posted: "Skis twist from center at the same time to match variations"

    Sounds really technical, or totally confusing? I didn't know skis could do the twisting. And now they have a sensor to match terrain variations, neat ,where do I buy a pair like this?

  • @skiwhh Interesting. The term twisting refers to the rotation of the skis. Weather either of us like the term or not it is a standard term in PSIA-RM, that is the group of instructors this video is aimed at.

  • @skiwhh The reference to twisting to match terrain variations simply implies tactics. This may sound technical but it standard terminology to the group of instructors this was made for. Based on your posts I am assuming that you are in the industry. I'm sure the group you work with has colloquialisms they use to describe movements

  • @skiwhh The reference to twisting to match terrain variations simply implies tactics. This may sound technical but it standard terminology to the group of instructors this was made for. Based on your posts I am assuming that you are in the industry. I'm sure the group you work with has colloquialisms they use to describe movements of the skis and body.

    Twisting is a common reference, not that I entirely agree with it, to rotation of the skis in PSIA-RM

  • Knee angulation is what mogul skiing is about not hip

  • @cordeauski Ski tipping makes the knees look like they create angulation. In fact, the knees and legs are just following the angle skis create. If you focus only on knee angulation, you may get twisting, as knee angles are really the femurs turning in the hip socket. So you need ski tipping or you end up with ski tails skidding.

  • Where is the rotational separation?

    They don't say where, except to that "Turning movements are progressive and come from legs"

    But I think the shins, knees, thighs and hips should all be parallel in order to do the retraction/absorption.

    To test this, stand up, imagining you are facing down the fall line. Stand on one leg. Rotate the free leg straight in the hip socket. Now try to lift your knee to your chest. It can't be done.

    This means that the rotation needs to happen above the pelvis.

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