roundabout technique is a combination of movements
initial rotation and final movements of the launcher system
linear in the direction of the launch issue.
The goal of the first phase is to create an initial optimal speed and turn
the maximum release rate in the final phase of double support
.
The movement is the key transition from
rotary motion to linear motion. During the rotation phase (double
support left foot, phase of flight support on the right foot),
the location of the launch is in the form of a ring.
The body of the pitcher acts as a component of a large
centripetal force.
This force increases even if the center of mass oscillation
of the right foot is very far from the axis of rotation pitcher
. But these large centripetal forces
create a problem of stability, symmetry and direction
launch.
This difficulty given by the oscillation of the foot outward
creates balance problems and further penalizes
the centrality of the masses and the forces of the subject.
The strong support of the right foot with a not too
cushioning the knee in the middle of the circle
launch is the most important factor in the efficient transfer of
speed from the rotational movement to linear movement
launch. After the cushioning the pin is followed by
push with his right foot and the weight transfer system
pitcher on the front of the left leg, at this stage can occur
two negative aspects that may affect the good
successful launch: one is that of a excessive rotation
right side of the body mainly due to a blockage of his left leg early
which stops the rotation of the left side of the body and shoulders
, the other is an almost natural consequence
a decrease in the angular velocity of the hips
which can prevent a dynamic rotation of the right foot and knee
right axis of rotation forward and up.
The final action of the rotation is terminated after the rotation of the hips and shoulders
is over the speed is 6.10m / s.
After the right arm took part in the action of
issue by extending the elbow and shoulder the weight
speed increases up to 6.80 m / s up to the time of issue of
'tool to speed 13 m / s.
We can conclude that the release rate is more
report by the explosive power of the upper torso
. The high rate of release is related to the technique of action
release with the following major factors :
elbow height, involvement of the flexor muscles of the fingers
action release and locking of his left arm which
prevents rotation during the time of issue.
initial rotation and final movements of the launcher system
linear in the direction of the launch issue.
The goal of the first phase is to create an initial optimal speed and turn
the maximum release rate in the final phase of double support
.
The movement is the key transition from
rotary motion to linear motion. During the rotation phase (double
support left foot, phase of flight support on the right foot),
the location of the launch is in the form of a ring.
The body of the pitcher acts as a component of a large
centripetal force.
This force increases even if the center of mass oscillation
of the right foot is very far from the axis of rotation pitcher
. But these large centripetal forces
create a problem of stability, symmetry and direction
launch.
This difficulty given by the oscillation of the foot outward
creates balance problems and further penalizes
the centrality of the masses and the forces of the subject.
The strong support of the right foot with a not too
cushioning the knee in the middle of the circle
launch is the most important factor in the efficient transfer of
speed from the rotational movement to linear movement
launch. After the cushioning the pin is followed by
push with his right foot and the weight transfer system
pitcher on the front of the left leg, at this stage can occur
two negative aspects that may affect the good
successful launch: one is that of a excessive rotation
right side of the body mainly due to a blockage of his left leg early
which stops the rotation of the left side of the body and shoulders
, the other is an almost natural consequence
a decrease in the angular velocity of the hips
which can prevent a dynamic rotation of the right foot and knee
right axis of rotation forward and up.
The final action of the rotation is terminated after the rotation of the hips and shoulders
is over the speed is 6.10m / s.
After the right arm took part in the action of
issue by extending the elbow and shoulder the weight
speed increases up to 6.80 m / s up to the time of issue of
'tool to speed 13 m / s.
We can conclude that the release rate is more
report by the explosive power of the upper torso
. The high rate of release is related to the technique of action
release with the following major factors :
elbow height, involvement of the flexor muscles of the fingers
action release and locking of his left arm which
prevents rotation during the time of issue.
Taken by the "Shot in rotation by the kinematic analysis to teaching" TS Piga Nicola
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