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#51
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I agree with you completely. His poling is a symptom of other problems,
not the problem itself. It is, however, a concrete, visual cue that he can use when he is trying to get farther forward. -Nathan www.nsavage.com "Gene Goldenfeld" wrote in message ... Yes, it makes sense. I just think one has to be especially careful about spelling things out with someone like Ken. I do think, tho, from a pedagogical standpoint that his poling can't be straightened out until he learns to skate from ski to ski instead of stepping or running forward; i.e., until he gets the sense of how to stay on each ski longer and use his edges to help get up the hill. Right now (video), he's planting about as far forward as his legs are giving him the time to do. Gene Nathan Schultz wrote: "Gene Goldenfeld" wrote in message ... I agree that Ken is not planting his poles nearly far enough forward; he's not on each ski long enough to do so. I do think your statement about where the tips should be planted is subject to misunderstanding, however. Assuming reasonably good technique, isn't the position a function of individual poling style and terrain? Yes, pole plant will change with terrain, speed and among individuals. But in general, if you are poling behind your toe, then something is probably not right with your body position. My point was not to say that his pole plant was incorrect, but that his poles are not planting in the correct position because his hips are back and he is not leaning far forward enough at the ankles. In other words, his poles land too far back because his body position is too far back. Not because he is planting incorrectly. Does that make sense? He can use the pole plant as a cue to see if he is getting forward, but the pole plant itself is not the problem. Nathan www.nsavage.com |
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Andrew Lee wrote
[ very helpful ideas for about how to move the foot forward ] . . . and . . . You might notice that both the ab/hip movement and the weight forward/push are similar to what you should be doing while classic skiing... I agree that I see it clearly in the great view from behind of Elena Vaelbe's ski-striding in the NSF video from Trondheim 1997 Women's Classic race. What I'm noticing is that this abdominal / hip motion (which seems like what Jim Grau has observed as "forward hip rotation") -- also shows up in lots of other human leg-propulsion motions. Ski mountaineering climbing -- In addition to happily getting into using this movement to help my ski-skating, I've been using this abdominal-hip forward-rotation move much in the last few months for climbing up very steep snow slopes on mountaineering skis with climbing skins on them for holding their grip against the snow. About four days ago it seemed like my muscles finally "got it", and I suddenly was amazed at how fast I was skiing up a slope of 50% grade steepness. Running -- Another motion where I've found this abdominal-hip forward-rotation move is in running. I was looking at this Quicktime video of the great Carl Lewis winning a 100-meter sprint: http://www.carllewis.com/video.running.4.html It's hard to see any details in the first segment of the whole race, but then around the middle of the video where he's doing his "cool-down" running, using single-frame-advance in the Quicktime viewer, I can see the rotation of Carl Lewis' pelvis about the vertical axis. Then toward the end of the video is a close-up on him for the final three seconds of the race -- and I think looking carefully at the vertical white stripe on his running shorts, and also the variations in the views and angles of his well-defined buttocks, it's clear that he is also rotating his hips/pelvis about the vertical axis during the actual race. The advantage of this hip-rotation move for running and classic-ski-striding (and skating) now seems obvious to me based on physics -- again much thanks to Andrew and Jim for pointing it out. Which leads to the unexpected perspective that in one key aspect my skating in that V1 video was not yet _enough_ like "running on skis" -- so now I'm learning how to run better in my skating -- by copying a move from Carl Lewis. Ken _____________________________________ Andrew Lee whatsupandrewathotmaildotcom wrote Ken Roberts wrote: Andrew Lee wrote ... try the ab driven leg recovery ... Yes I did, and I like it. I haven't actually done any sort of side-by-side comparison against my old way, because once I got into doing Andrew's new thing I found I had no interest in going back. Good! I knew it would work because I had the same experience. It was the single most helpful tip I learned from this newsgroup a couple of years ago. ... try the weight over the front of the foot ... Yes, this tip worked well for me too -- especially in the final phase of my leg-push, when I combined it with JanneG's and Jay "Bjorne" Wenner's idea of setting the next ski down low and smooth. I liked what happened when I would land the next ski early, before the end of previous leg-push -- then focus the finish of that old push on the fore-foot. Felt like that helped me direct that final push into the line of the new ski -- which when I was climbing up a steep hill was aimed distinctly out to the side. ... During the early or main phases of my leg-push, I found it hard to make myself focus on my forefoot. Out of the few times I could talk myself into it earlier in my push, at least once it seemed to bog my ski down and almost stop my glide -- because I was in soft snow. Maybe I need an additional tip about that. I think you have it. I was thinking of the main push. It probably doesn't happen at the beginning because if you recover your leg forward relative to your center of mass, you necessarily have more weight farther back on that foot, neutral I would say. Part of the weight might also be on the final part of your push on the other foot's forefoot in V1. You'll probably notice that you can stay on the front more in V2, V2A because you don't have as large a step forward. Make adjustments by feel when skiing different terrain and techniques. You might notice that both the ab/hip movement and the weight forward/push are similar to what you should be doing while classic skiing... |
#53
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Quote:
Jim |
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Jim Howe wrote
Is it important to know when I try to incorporate this in my skiing that Carl Lewis' butttocks was "well-defined"? No. But watching the well-defined muscles come into and go out of view was helpful for me when analyzing the video -- to detect that Carl Lewis was rotating his hips/pelvis from side to side while he was running. Ken |
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