Graphics Reference
In-Depth Information
FIG 5.49
The Run Cycle: Phase one,
the push.
•
The left arm is thrust forward and bent at the elbow. The forearm is held in
front of the body around the horizontal.
•
The right arm is extended backward and heavily flexed. The upper arm is at
the horizontal, with the lower arm being held vertical and at a right angle.
•
The body is bent slightly forward of the upright. A rotation in the torso
allows for the left shoulder and the right hip to be placed in a forward
position.
Phase Two: The Suspension Phase
•
The left leg remains extended backward; a bend in the knee occurs at this
point because the foot has left the ground.
•
The right leg is extended fully forward and begins to straighten for maximum
reach in anticipation of the right foot making contact with the ground.
•
The left arm remains held in front of the body; rotation in the shoulder
begins to move the upper arm backward to a vertical position.
•
The right arm begins to swing forward due to a rotation at the shoulder.
The angle between forearm and upper arm remains the same.
FIG 5.50
The Run Cycle: Phase two,
the suspension phase.
