主題: 對罵
查看單個文章
舊 2011-02-22, 01:31 PM   #114
pku
滑雪瘋7級
 
註冊日期: 2010-05-30
文章: 3,787
預設 回覆: 太極滑雪的陰陽哲學

[quote=CrazyBoy;11063]我是智障團體嗎?

我連英文都看不懂

In the context of technique, we will establish the
building blocks for skill development, train your
eye to observing good technique, explain the
paradoxes within the sport, and ground you
in applied biomechanics.
READERS GUIDE
Nordic skiing technique requires practice and
under the guidance of a competent instructor,
coach... or ideally, a mentor.
The reader must also realize the challenge in
presenting something as complex as Nordic Skiing
in a complete, yet concise manner, within the
scope of a video or book.
All technical assessments made from either
video or photographic imagery need to
take into account distortions owing to the
position and angle of the camera. The
central perspective is critically effected by the
lens selection, frame rate, aperture and focallength. Serious interpretative mistakes are made
by skiers, coaches and instructors based upon
the most recent World Cup television broadcast
footage or photos placed in magazines to
illustrate points.
For this reason, we have relied on re-shooting elite
world cup skiers outside of a race environment
and on a controlled set. We are also able to
achieve a far superior quality in the footage and
a precise bio-mechanical picture.
More specifically, photography or video is
generally not geometrically accurate or
planimetric, owing to plane and angle, radial or
relief displacements. These images require
restitution before you should attempt to draw
conclusions regarding biomechanical angles or
positions of the skiers. Photography that is
plainmetrically correct is known as an
orthophotographic image.
Similarly, we have chosen our words carefully,
and have kept the explanations succinct, rather
then providing long-winded and overly-technical
rambles, which are unworkable for the skier. In our
experience, brief phrases are needed capture
the essence of the technique.
Given the inherent limitations with the language,
we have also sought to minimize any ambiguity
through extensive public consultation and
collaboration with leading authorities in the sport.
The skiers chosen to demonstrate technique
possess attributes consistent with the level of skill
being presented. That is to say, Olympic or proelite
athletes would be used to show advanced
skills whereas intermediate level skiers may be
chosen to depict learning progressions.
pku 目前離線   回覆時引用此篇文章