|
Center of Balance: |
Is located at the
center of mass, where the three axes intersect. |
|
Balance Point: |
Is where the forces on
the body are equal to the forces created by the
dynamic body actions |
|
Body Segments: |
The body is divided
into several sections; the upper body and lower body
are two of the major segments |
|
Vertical Axis: |
Runs from the top of
the body to the feet, through the balance point. |
|
Horizontal Axis:
|
Runs from side to side,
through the balance point. |
|
Lateral Axis: |
Runs from front of the
body to back of the body, through the balance point.
|
|
Tilted; |
One or more of the axis
of rotation are less than 90 degrees to the
direction of the rotation. |
|
Off Axis; |
The rotation around the
primary axis is tilted off of the axis. |
|
Direction of Travel; |
The
primary direction of travel is in the horizontal
plane and thru the balance point. There are lateral
movements around the body segments during flexion
and extension. |
|
Plane; |
There are three planes
which the body pass through during dynamic movement,
the vertical plane, lateral plane and horizontal
plane. 6 |
|
Flexion: |
decreasing the angle
between the joint or body segment |
|
Extension; |
increasing the
angle between the joint or body segment
|
|
Rotation; |
increasing or
decreasing the different angles between the body
segments |
|
Degrees of Rotation;
|
The number of rotations
or part of rotations around an axis expressed in
degree of rotation. |
|
Primary Axis; |
the body actions to
rotation on the first axis |
| Secondary Axis; |
the body actions to
rotation on an additional axis |
| Grabs: |
With the body action of
a flexion, a section or part of the ski is grabbed
by the hand or hands. |
| Holds:
|
With the body action of
a flexion, a section or part of the ski or skis is
grabbed by one or more hands and then held for a
duration. |
|
| 6005.13 Tuck |
A position in which the knees
are brought up towards the chest to a 90° angle at
the hips and 90° angle at the knees. Hands are
placed on knees or legs. In back somersaults 90° is
ideal, in front somersaults more than 90 may be
reached.
A body action
of flexion between the upper body and lower body
with the knees coming towards the chest. |
| 6005.14 Pike |
A position where the upper body is bent 90° at the
waist with legs remaining essentially straight.
Is a body action
that starts from an extended position then there is
a flexion at the waist, with legs being kept
straight. |
| 6005.15 Layout |
The body
is fully extended straight. |
| 6005.19 Puck
Position |
A maneuver
performed in the puck, pike, tuck or layout position
Free position: Could also be called
the ‘puck’ position which is in-between a layout and
a tuck position, mainly seen in off axis rotations.
|
| 6005.17 Twisting |
Are rotations around the primary and
or the secondary axis.
All twists (including multiple twists
in one somersault) are have to be
performed in a layout position. |
