Graphics Reference
In-Depth Information
•
The body is unsupported by the ground at this stage of the cycle and has
risen to the highest point within the sequence.
Phase Three: First Contact
•
The left leg swings forward more quickly; the lower leg increases the flexion
action while the knee moves forward to a point just behind the body.
•
The right leg is angled less acutely away from the body. The knee is more
or less straightened and the left foot makes contact with the ground.
•
The left arm continues to moves backward, with the elbow and forearm
swinging away from the body to allow it to pass the torso.
•
The right arm has been rotated at the shoulder, so the hand is alongside
the body, though the angle between upper arm and lower arm remains
the same.
•
The body has fallen from its high point and is once again supported by the
single leg. Counterrotation of both the hips and the shoulders now occurs.
FIG 5.51
The Run Cycle: Phase three,
first contact.
Phase Four: Squash
•
The left leg has swung to a position whereby the knee is located
directly below the body. The lower leg is flexed to the maximum at this
point.
•
The right leg absorbs the force of the impact with the ground by
flexing at the knee. The foot is flat on the ground and directly below
the body.
•
The left arm is held next to the body. There is an increase in flexion
between the upper and lower arms, with the elbow appearing just behind
the body.
•
The right arm continues to swing to a forward position. The hand is
located alongside the hip.
•
The body is now supported by a foot directly below the torso. It has reached
its lowest point in the cycle as the impact of the contact is absorbed.
