I don't want to hijack this forum with the paper. When I was asked to help or volunteer with this project, I though I might learn something, but a few free trips and lift tickets how could I say no. Doc was/is surprisingly engaging, and his passion comes through as he shared (taught is probably a better word), and broke things down into language I could easily understand, so my hats are off to Doc. I had many thoughts if I had Prof's like him in college, I would still want to be in school.
I emailed him last night, and he will supply me with a link to his paper when it is done, and that I can post the link on this forum. I hope his paper comes off, with as much interest and enthusiasm as he gives in person, although that will be tough, I am sure. In addition they are analyzing the film and photographic data, and getting illustrations done.
Originally Posted by Jamt
Sorry if I am picking on you today TDK, but the muscles he is talking about control the foot:
Jamt, you are correct about them controlling the foot. In addition, I apologize I took your post incorrectly, as I did think you were saying that you were skiing with a relaxed ankle.
As for the 95% rule, when Doc explained that to me, it has me looking at every sport I enjoy watching and trying to identify the things that all of the elite or professional athletes do the same, I can't say I'm very good at doing that though.
Originally Posted by chad
I think that point is especially interesting, thanks for joining in msprace. 95%!, truly telling if that is even close, the difference small movement changes will have to add the next, 1, 2, 3%,...
the question then is if the person is demonstrating highly "correct" movement in the ankles, legs, etc how would teachers who view the upper body as largely an automatic process help someone find their additional % of efficient movement.
That's the purpose of his paper. Take the 95%, find the major positions or movements, create easy ways to identify them, and then you can check them off. When you get into the final 5% of the movements he is taking the Most common ones first (i.e. a movement done by 40%, then a movement done by 25%, then a movement done by 10%) in regression analysis to the lab. So he will have test subjects mimic a movement in the lab environment, and test it out for strength, and energy output. Then when you identify the most important movements or positions you have a new goal on what the skier should be trying to do. Now the next hard part is figuring out how to teach that movement to someone, if you even can (depending on what the movement is, some of them he has identified in other sports can't be done by all people, and the reason they can't could be due to past injury, genetic makeup, physical strength, body control, etc..).
I can tell you this, through his knowledge he identified, and proved an error he saw in a few of the Nor-Am racers while doing slalom runs. When gate blocking, I never liked the term Cross Block, and what he showed me was amazing. Any of you can test this out, if my verbal description isn't good enough, I will try to post pictures in the near future.
If you draw a line down the center of your body, and extend that line into a 3-D forward down the center line, if your hand crosses the plane you weaken your entire body. So if you are making a left turn, and the centerline of your body through the fall line of the course isn't on the inside of the gate, you should use your inside or uphill arm to block, if you use your outside or downhill arm you will weaken your entire structure.
Experiment: Stand straight in an athletic stance, knees slightly bent. The action of gate blocking is very similar to throwing a punch, so put your punch or gate block out (don't lock out your elbow), but don't cross your centerline, and have someone push back on your fist, and to the sides of your fist. Get them to feel the strength, then move your arm across the centerline so your hand would be in front of your opposite shoulder, and have them push on your arm in the same way. You both will feel the difference. In addition try lunges, with your arm out in a position not crossing the centerline (do right arm for right leg to simulate downhill leg), then do it again with your arm out and away from your body but crossing the centerline.
I was initially like yeah, whatever, but in 5 minutes I did 15 fewer lunges with my arm in the bad position (In addition I struggle or felt like I was struggling with my balance). The reasoning is that the arm when extended across the centerline of your body is not in natural alignment. So you are having to use core, shoulder and arm muscles in a way to compensate for the balance. How does that affect the leg so much? Well if all of these other muscles are firing to compensate for that movement, you have less total electrical current to send to your legs to make them fire in the way you need to at that time. (Muscles move on electrical current passed through our nerves.)
OK, I'll save the rest for the paper, and start a new thread when it's published.