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Paper Topic:

hip flexion in kicking soccer ball motion

Hip Flexion in Kicking Soccer Ball Motion

Sports all around the world make use of the complex skill of kicking Within each sport a variety of kicking styles has evolved to suit different ball types , game rules and the part that kicking plays in the game

Components of the kick

For a detailed analysis , we can break the kick action into six stages (Barfield

the preparation

the approach

swing-limb loading

hip flexion and knee extension

foot contact

follow-through

The first five stages constitute preparatory and acceleration stages

br The preparation

Table 1 : Muscular action during kicking preparation (right-footed kick

Body part Action Muscles

Right hip Extension Gluteus maximus and

hamstring group

Left hip External rotation and eccentric extension Gluteus med , gluteus min

hamstring group and adductor

magnus The approach

Children between two and three years of age generally toddle straight into the ball to try and kick it . As they get older they learn a paced run-up and adjust their approach to the ball from front-on to a more diagonal angle . The diagonal approach produces greater swing-limb velocity for greater ball speed

Table 2 : Muscular action during approach and kick (right-footed kick

Body part Action Muscles

Right hip Internal rotation /hip Flexion Tensor fascia lata , rectus femoris , psoas , iliacus , sartorius and adductor group

Left hip Extension Gluteus maximus , hamstring group and adductor magnus Swing-limb loading

The next phase within the biomechanics of the kick is the swinging or cocking of the kicking limb in preparation for the downward motion towards the ball . During this phase the kicker 's eyes are focused on the ball the opposite arm to the kicking leg is raised and pointed in the kicking direction to counter-balance the rotating body . As the plant foot strikes the ground adjacent to the ball , the kicking leg is extending and the knee is flexing . The purpose here is to store elastic energy as the swinging limb passively stretches to allow a greater transfer of force to the ball during the downward phase of the kick (Barfield ) HYPERLINK "http /www .sportsinjurybulletin .com /archive /biomechanics-soccer .htm " \l "ref ref

Before the end of the swing phase when the hip is nearly fully extended and the knee flexed , the leg is slowed eccentrically by the hip flexors and knee extensors . This is the phase of the kick where there is maximal eccentric activity in the knee extensors

Hip flexion and knee extension

The powerful hip flexors initiate this next phase of the kick . The thigh is swung forward and downward with a concomitant forward rotation of the lower leg /foot . As the forward thigh movement slows , the leg /foot begins to accelerate because of the combined effect of the transfer of momentum and release of stored elastic energy in the knee extensors . The knee extensors then powerfully contract to swing the leg and foot forwards towards the ball

As the knee of the kicking leg passes over the ball , it is forcefully extended while the foot is forcefully plantar-flexed . This exposes the inside...

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