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发表于 2016-1-11 21:09:59
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本帖最后由 checkmoteur 于 2016-1-11 21:12 编辑
上面那个transverse plan上的重心雪板关系讲清楚,来看HH博客上的一篇文章:
Sometimes we can relate better to what isn't working, than to what generates a good movement series for turns. In an effort to show differences in PMTS Direct Parallel technique approaches and other forms of teaching and skiing, here is a breakdown of a ski turn.
Here is an example of what should be an "Expert Turn", and how it looks when it is not working. This is a high level skier on the National Demonstration Team at Interski. Interski is an international gathering of the best instructors and skiers from all the nations that ski. At Interski the nations demonstrate their product, what they teach and how they ski in their countries.
Let's get into what happens with this skier. Because of a missed opportunity or misunderstanding of technique this skier will have trouble. At this point in the arc or transition, the turn could still be saved. However the "Essential Movements", are not going to happen. I will describe what is happening and what movement we use in PMTS D.P., to avoid this kind of skiing result.
(above) Notice the skier has not transferred balance. He is standing on both feet. This creates a dead zone between turns. A dead zone is when there is no energy helping from the previous turn to set up balance for a new turn. He should be already balancing on the new outside foot, (right foot) and actively tipping the inside foot. (Next photo below)
(above) Here you see the result; basically this a wedge turn. There is no inside foot tipping action. The feet are separating and the upper body is rotating to get some kind of turn action started. This will put the skier totally out of balance.
(Photo above) Because balance was never transferred to the new outside ski, the weight is still on the inside ski, and the outside ski is pushed and stemmed.
This sequence shows an obvious inability to increase angulation, balance and parallel skiing. This type of skiing results from two failures, one is movement based, the other is from poor alignment.
参考上面帖上所说,则事实上weight transfer是这里的关键。这个处理好了,tipping还是两腿都转,在避免stem或wedge这一点上说,效果是一样的,所以根本无关宏旨。
讲一个真理,夹带一个私货,这是所谓marketing。
以这个逻辑为基点建立一个体系,把外腿rotation指责为wedge turn的罪魁,把这么核心的基本滑雪技术排除在外,这就配得上邪教的恶名了。 |
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