Q & Q Analysis in Kicking

Objective

generate maximum distal-end speeds (foot) at impact

Classification of kicking

Single planar

Multi Planar

Qualitative Analysis

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.

Kicking Phases

  1. Approach Stance foot placed beside the ball
  1. force-production Transfer of body weight from stance leg to kicking leg

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  1. Impact Kicking leg

Maximum extension at the knee joint

Full plantar flexion at the ankle joint

  1. Follow-Through
    Continued trunk and pelvic rotation

Quantitative Analysis

Projectile motion( depending on type of kicking)

Release angle

Release speed

Height of release

Angular Velocity

Proximal-to-distal pattern of segmental angular velocities in Kicking

Segments' velocity

• 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
enhanced motion