Kicking a Soccer Ball

Kicking a Soccer Ball

By: Jacob Poole, Amanda Dufner, and

Rachael Fashant

Approach Phase

Placement Phase

Swing phase

Contact Phase

Kicking a Soccer Ball

• Supporting foot should be on the outside of the ball
• Generally 2-6 in. from ball
• The taller the player the further he/she should stand from the ball
• Don't want to be too far forward or too far backward from the ball.

• Steps leading up should be in a straight line towards the target and increase in speed
• Last step should be very long, in order to create an > in range for the kicking motion.
• speedy final step, > velocity of kicking motion
• make motion as smooth as possible to conserve energy

• > velocity of kicking motion will maximize kicking force, obviously..
• This is achieve by a quick contraction of the hip, knee, and ankle.
• Foot should make contact with the midsection of the ball.

• The area of the foot that should make contact with the ball is the shoestring area
• Force is greatest when the line of swing is directly through the ball's center of gravity.
• Firm ankle with toe pointing down should be emphasized

Deterministic Model

Research Article

Goal: Scoring

Follow-through Phase

Any Questions??

Height Velocity of Landing in Goal

Distance

Direction

• After a player strikes the ball, an adequate follow-through is vital to a forceful complete swing.
• Follow-through will also help control the consistency of muscular contractions during the forward swing.

Mechanical and Anatomical Analysis of the Soccer Instep Shot

• 5 phases of shooting a soccer ball
• SportsDiscuss
• Went into detail of how your body should be aligned for each phase.

Gravity

Flight Distance

Physique

Body Position

Arm Placement

Air Resistance

Timing

Mid-body Placement

Foot Placement

Change in Velocity

Lean

Non-kicking Foot

Kicking Foot

Forces Exerted

Initial Velocity

Friction with ball

Forces Exerted

Friction with ground

Muscular contractions at

ankle, knee, and hip joints

Muscular Contractions at Hip, Ankle,

Shoulder, and Knee Joints

Free Body Diagram

Fg

Keys to Performance

Anatomical Principles

Mechanical Principles

Origins

Femur & Ilium

Spine & Ilium

Femur & Tibia

Ilium

Ribs & Spine

Muscles

• Quadriceps

• Iliopsoas

• Gastrocnemius

& Soleus

• Gluteus Maximus

• Obliques

Insertions

Tibia

Femur

Calcaneus

Femur

Ilium

Joints where movement

occurs

Extension at Knee &

Flexion at Hip

Flexion at Hip

Flexion at Knee &

Plantarflexion at Ankle

Extends/laterally rotates

Thigh

Flexes and rotates trunk

Planes of movement

Sagittal

Sagittal

Sagittal

Sagittal & Transverse

Sagittal & Transverse

• Newton's Law of Inertia
• Newton's Law of Acceleration
• Newton's Law of Reaction
• Projectile motion
• Gravity
• Momentum
• Friction
• Elastic impact
• Kinetic energy
• Potential energy
• Magnus effect

• Leg strength
• Core strength
• Coordination
• Timing between legs
• Foot placement on ball
• Stride length
• Hip and leg placement after contact with ball

Torque

Right Shoulder

Torque

Left Shoulder

I. F.

Pec.

Air resistance

Torque

Right hip

Observation Diagram

How to Correct Common Errors

Efficient Performance

True/False Question

Internal force

Quadriceps

• Instep shooting drill,
• Shooting and staggers drill
• Three goal shooting drill

Internal force

Calf@ankle

The most efficient way to kick a soccer ball is with your big toe.

 Having your non-kicking foot next to the ball pointing in the direction you want to the ball to go.

 Having your kicking foot contact the ball in the right position i.e. plantar flexed and striking the ball on your first metatarsal.

 Having your kicking foot contact the ball in the correct spot on the ball. You want to strike the ball on the middle to lower portion. If you divide the ball up into horizontal sixths you want to contact the ball between the second and third position coming up from the ground.

 Using full body rotation to direct the ball

 Having a forward lean when contact with the ball is made

 Following through the ball with your kicking foot

 Even strides approaching the ball

Friction kicking

foot to ball

Soccer

Ball

Friction plant foot to ground

Fn

True/False Answer

Novice Performance/Common Errors

• False

 Having your non-kicking foot not parallel to the ball or not pointing in the direction you want the ball to travel.

 Kicking the ball with your big toe instead of on your laces

 Having poor timing between your upper body and lower body

 Missing the ball if approaching with too much speed or having uneven stride lengths causing you to stutter step when you near ball