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本帖最后由 bullpower 于 2013-10-30 23:58 编辑
我理解挺靠谱啊，去年花了大把论坛币购买了老大复印的中央红头文件，一直没看，
今天翻了一下 学习了一下， 党还是没藏着掖着的，V老大下次最好能给点TIPS AND POINTERS，
俺们自己大海捞针去刨， 有点费劲。。。。
Steering:
the blend of edging and pivoting with the control of the resulting pressure. Steering
allows the skier to choose a variety of turn shapes. Different blends of edging and pivoting allow
the skier to control speed or to maintain speed or accelerate by reducing braking.
STEERING除了转弯，还有控速，当然转弯一个主要目的是为了控速。。。但下面会说，
SKIDDING也是辅助控速的 - 这个和转弯没关。。。
有点饶舌。。。。
Carving: turns with little or no skidding, with the tails of the skis following the tracks made by
the tips
没有100% CARVING哦。
Skidding: the sideways travel of one or both skis across the snow. Necessary for speed control.
侧滑（SKIDDING）不是坏事，而是一项技术！
但太多了可能就不好了。这个和杂志里讲的一样。
PIVOTING
Pivoting and direction change
With the upper body facing the direction of travel, turning the legs in the hip sockets creates a
steering angle. This, combined with ski sidecut, deflects the skier in their arc. Pivoting is seen in
the relationship between the upper and lower body.
Pivoting and balance
The ability to guide the skis on their path without relying on hip or upper body rotation will help
a skier maintain balance by keeping the body over the outside ski. From the hips down there is
less mass than in the torso, so changing direction with the lower body is quicker and lets the
COM move in a smoother trajectory.
Pivoting and edging
Upper/lower body separation enables a skier to balance on their edges through angulation.
Turning the femur in the hip socket allows the hip joint to be more mobile laterally to the inside
of the turn, helping to balance on the edges.
Pivoting and rotation
Turning the hips or the upper body before the legs at any part of the turn is called rotation. At the
top of the arc (phase 2) this could be caused by a rushed weight transfer (timing and pressure
control) or an imbalance from phase 1. Through the bottom of the arc (phase 3 into 1) it may be
caused by poor steering mechanics or a loss of control of angular momentum.
Note: See Biomechanics and skiing: Angular motion, Angular momentum and Planes of balance:
Rotational.
EDGING
Edging and Direction Change
When there is a change of direction, edging is involved. Edging provides the grip that counters
the force of gravity and centrifugal force, keeping the skier turning. The degree of edging is
determined by how fast the skier is going when they turn, and whether they wish to decelerate,
maintain speed or accelerate. Good edge control makes the ski grip but allows maximum
gliding for any given direction change.
Edging and Pressure Control
Turning on an edged ski or skis generates forces that give the skier a sensation of weight, or
pressure. When the skis are flattening (phase 1) they are releasing their grip and the load against
the snow diminishes. When the skis are turned across the line of travel (phase 2, 3) forces build
and the COM gets deflected. Edge angle increases and pressure builds. Bigger forces from higher
speeds and steeper terrain place greater loads on the skier which must be managed.
Inclination and angulation
Inclination refers to the line of lateral balance between the BOS and COM. This degree of lean is
what the skier must do to counteract the forces of the turn, and it changes within each turn in
response to speed, external forces and intended path of travel. Too much lean and the skier stands
on the inside ski or falls over, and not enough makes it impossible to maintain the arc of the turn.
Angulation is the bending of body segments as the skier inclines. Controlled by the use of ankles,
knees and hips, it keeps the skier in balance against the edges and lets the skier produce edge
angles that are greater than what can be achieved with inclination alone.
Turn Initiation – changing the line of inclination
While balanced on an arc, the COM is inclined to the inside of the BOS. To change direction, the
skier must change this line of inclination, putting the COM to the inside of the new arc. A wedge
or stem is a way of placing the BOS to the outside of the new turn, changing the line of
inclination to the new side.
In parallel skiing this “toppling” can be achieved by releasing pressure on the outside ski and/or
transferring it to the other ski. This effectively shifts the BOS from the downhill ski towards the
outside of the new arc, changing the line of inclination. A smooth release in phase 1 is also a way
of getting the COM to the inside of the new arc. Most edge changes involve combinations of
these elements, and can be passive or active, simultaneous (parallel) or sequential (wedge),
depending on the skills and desires of the skier.
Note: See Biomechanics and skiing: Stability, Direction, Impulse, Angular motion and
Momentum, as well as Planes of balance: lateral
话说党今年的主题仿佛是“FUNCTIONAL USE OF ALL JOINTS ( MOBILE STANCE)”
和去年完全不一样了（去年是放平了板搓搓搓转转转？）
关节不好的同雪们，该扎针的扎针，该按摩的按摩，该抹印度神油的赶紧抹，
有啥神医信息赶紧公开共享一下。。。。
今年不再回避单脚滑，不但有外脚单脚滑，还有明确提出内脚单脚滑，
JAVELIN TURN，跳转180(正滑，跳转180倒滑，在跳转正滑），和360S SPIN啥变态DRILL都
明目张胆滴写进红头文件里了。。。。这是要老夫我逼进公园吗？这些跳转的，不MOBILE不行啊。。。
INTERMEDIATE SHORT TURNS + INTRODUCTION TO BUMPS 也赫然在目。。。。。 |
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雷达卡
楼主
显身卡
发表于 2013-10-31 08:29:32
