Saturday, May 20, 2017

Skiing analysis of top world cup slalom skiers.



https://www.facebook.com/130797116984929/videos/1570923782972248/?pnref=


Here in the video link above: You can see how there are  differences between soft and hard angles. Soft angles look like bigger angles, however, they end up taking longer to create, and making the skis take a longer wider line. Hard angles, as I refer to them,  require less inward angulation, less vertical separation of the feet and have less arc distance from the gate and a shorter radius.  This produces more pressure and rebound from the turn.

Differences between the two skiers is stance width, and fore/aft balance. This has an impact on line and time in the arc. Weaker stance, is wider, and has more scissoring between the feet, in both instances this affects ski performance.


There is a distinct pattern of skiing by David Ryding and others on the same equipment, related to the boot brand and alignment set up as well. This article points out how technique is related to equipment.


Big angles are for show, least angles are for go. Both skiers here are great slalom skiers, Hirscher obviously one of the best in history. I've been writing about his skiing for almost a decade now.




Below are comparison photos in the same turn. One turn that can make a difference.!

Coming in above the gate:
David Ryding setting up the angles, not really engaged yet.
Marcel Hirscher in the identical place above the gate, however, a totally different set of angles, early with skis and body ready to carve.

David Ryding leaning away from his outside ski to far, into the hill.

Marcel Hirscher inside ski and boot pulled back, strongly counter balanced and more centered.

Marcel Hirscher completely balanced and ready for the steep section
David Ryding comparatively, caught between skis, unbalanced, will have to step out of the turn to change edges.

Wednesday, May 10, 2017

Why is Traditional Ski Instruction so convoluted and vague?

      A typical guideline for a traditional ski instruction task.




At first glance, ok, this looks reasonable, until you start trying to use it or produce it.

Here is a direct printout of how Motor Skills are described by a major Traditional Ski Teaching organization.


  1. Motor Skill Development:
    • Choose task for situation;
    • Task is related to skill level of student. 

      And here is what they give you to work with:


      Technique:
      • Use all joints to maintain balance;
      • Lead the turning effort with the lower body;
      • Manage separation for angulation to provide grip;
      • Coordinate movement patterns for efficient turn linking. 


        What is clearly lacking here is the fundamental understanding for teaching human movement. 

         "The emphasis on accuracy, specificity, and economy of movement information is what we strive for, always. Without the understanding of efficient movements in skiing, a coach is basically lost. What I accept as part of this understanding is that movement analysis skills are part of that bigger picture of complete skiing understanding and effective coaching".

        Far more effective would be to describe how to teach and how to convey movements to students. Movements in skiing, like in any other sport are based on a body part and a muscle group. 

        Skilled and effective ski teaching defines the movement, the body part that is to be used and how to move that body part, in a logical sequence. None of the direction or information from traditional teaching systems above doses this. 

        Skinig movements can be broken into a list of basic activities, for example: to start a turn putting the ski on edge produces a ski snow interaction that creates a turn. For this to be effective for a student the instructor must know at what angle on the slope to start, and what the first movement in the sequence of movements is.

        For example: In a logical progression, it requires a simple process of providing information to the student, the instructor must give an attainable first step. 

        For Example: From a very low angle slope, with both skis directly pointed downhill, pick up one ski and transfer all of your balance and stand on the other ski. This is a series of directions to achieve an outcome. This does provide movement information and it is movement teaching. 

        Movement teaching in most cases also includes a detailed description of what body part to focus on. 
      • Example: to transfer balance to your right foot and leg, lift your left knee and bend your left leg enough to clear the snow with the ski. Keep the lifted ski level to the surface. To maintain balance in this simple movement example, the CG or body must also move laterally over or toward the standing foot. 
      • This is the first step in a logical movement progression. Rarely does this simple approach appear in traditional ski lessons or coaching.
      • This type of understanding can be used for every step in a skier's movement development. However you have to understand what movement development entails first.



How to create a successful life!!!


                                                          Other ways to use this idea.

-Creating a business
-Being named to a national ski team
-developing a reputation in coaching