Q & Q Analysis in Kicking (Kinectic Chain Theory (The better kickers…
Q & Q Analysis in Kicking
generate maximum distal-end speeds (foot) at impact
Classification of kicking
Approach Stance foot placed beside the ball
force-production Transfer of body weight from stance leg to kicking leg
Impact Kicking leg
Maximum extension at the knee joint
Full plantar flexion at the ankle joint
Continued trunk and pelvic rotation
Exhibit the sequential movement of the thigh, shank and foot segments to impact.
A series of sequential activated body segments as the kicking limb swings like a pendulum.
Projectile motion( depending on type of kicking)
Height of release
Proximal-to-distal pattern of segmental angular velocities in Kicking
• Ball speeds correlated to foot
speeds at impact
• Proximal-to-distal technique
Kinectic Chain Theory
The better kickers are generally recognized by a proximal-to-distal sequence of segmental activity.
• The open kinetic chain: system of links with a fixed base (trunk) and open end (segments that are free to rotate).
• The velocity of distal segments is a result of more than the joint moments (torque)
Transferring of momentum and kinetic energy in a proximal-to-distal manner is important in kicking.
Momentum generated in the proximal segments through the generation of large muscle forces is transferred to the distal segments.
Stretch Shortening Cycle
• The better kickers usually swing the kicking limb as far back as possible before swinging towards the ball
• Generates greater ROM, therefore generates greater swinging momentum to impact
• The better kickers usually swing the kicking limb towards the ball immediately after the pull-back
• Generates faster forward swing of the kicking limb to impact
Increasing the activation state of the muscles by pre- stretching the connective tissues (including the muscles)
As you bring your legs (thigh and shank) back, you prepare the knee extensor-muscles (eccentric contractions) and immediately flex and rotate the joints to create the