KinesiologyofaFullGolfSwing

8/9/2019 KinesiologyofaFullGolfSwing

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Kinesiology of a Full Golf Swing

Presented byJoseph Urman

Fred Doherty

Leva Tien

Katelyn Carroll

Kristina Wilcox



Background Golf Information

Theorized that golf originated from Scotland in

the 1100s. Golf derives from the Dutch kolf which means

stick, club, bat

"Gentlemen Only, Ladies Forbidden" acronym

for Golf ( which is not true by the way)



Background Golf Information

4-7% of golfers within the United States who

play left-handed, however, most golfers prefer right-handed when playing

Golf is the unofficial sport of the business

world.



Anatomy

Large Musc l e Gr oups

± Trunk, back, hips, legs, shoulders

Small Musc l e Gr oups

± Feet, forearms, wrists, hands, fingers



Anatomy Application

Goal to achieve a fluid motion

± Muscle groups contract and relax Try not to interfere with acceleration



Phases of the Golf Swing

1. Stance Phase

2. Back Swing

3. Downswing

4. Impact





Stance Phase

Correct stability (Firm

center of balance)

± Proper placement of feet

in relationship to

shoulders

± Flexing and straightening

the knees, hips, spine,

neck



Biomechanics of the Stance Phase

Depression of the arm and scapula as

shoulders roll forward to grip the club

Axi s of r ot at i on = mid trunk

Lever ar ms = mid trunk and thigh



Biomechanics of the Stance Phase

Torso flexed forward to create pr i mary spi nal

ang l e (about 45 degrees)

S ec ondary ang l e = lateral bending to right in

spinal segments (about 16 degrees)



Torque and Lever Arms

Torque - The tendency of a force to cause

rotation around a pivot point ± Magnitude of the torque is equal to the product of

the force and the lever arm

The length of the arm-club lever at the point of

impact will have a direct result on the velocityof the ball



Back Swing

Brings club to highest

position in preparationfor acceleration



Biomechanics of the Back Swing

Recruitment of energy

± As club moves backwards shear force is applied toanterior portion of the right foot

± Posterior shear force is applied to left foot

Additional torque = rotation of knees, hips,spine, and shoulders

± Imaginary axis



Downswing

A force produced

movement whereangular velocity creates

club head speed



Biomechanics of the Downswing

Finishes backward movement and begins

forward movement ± Weight shift onto the inside of right foot and begins

towards left foot

± Elastic energy stored as a result

± Hips closed at 45 degrees and shoulders closed at about 100degrees



Biomechanics of the Downswing

Majority of torque created by lower body

muscle groups ± Produces acceleration in the upper body as

transferred energy



Impact Phase

Follow through and

recovery ± Deceleration of the golf

swing

Muscle relaxation

Reduces risk for injury



Biomechanics of the Impact

Weight transfer is complete

Shear force from both feet are towards thetarget

Potential energy transfers to kinetic energy as

club head contacts golf ball

± Left foot supports 80-95% of body weight



Impact/Follow ThroughBiomechanics

Body decelerates by rotating to a completion

point ± Occurs as a result of energy absorption back up

through the kinetic chain of the body



Mechanisms of Postural Control

First Mechanism

± Postural control for balance during underarm swingand weight shift

Second Mechanism

± Sequential movement of the arms and hands

throughout golf swing



Injuries due to Improper Mechanics

³Golfer ¶s Elbow´ or

lateral epicondylitis ± Left wrist goes into flexion

as hands near impact

phase

Creating pull on the

lateral epicondyle and

lengthening of theextensor muscles




DeQuervain¶s Syndrome or tendinitis of the

extensor and abductor muscles of the thumbcaused by:

± Additional load on muscles due to limitations of

shoulder motion

Posterior cuff ± Absorption of contact forces and rapid shortening

and lengthening of muscles




Spinal and back injuries

± Laterally shift lower body to increase club speed ondownswing instead of rotating pelvis in sync with the

shoulders

± Spine forced to flex laterally

±

Shear and rotational forces act on the spine and cancause hyperextension of the spine



References

2007

www.valleyhealth.com/Health_Library/mayo_catlinks.asp?navid=1

3&sp=742

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KinesiologyofaFullGolfSwing