Biomechanics for Cricket Coaches

"Many people believe coaching is about ANALYSIS"
“often too much analysis causes PARALYSIS”

What is Biomechanics Coaches need to understand The Central Theme of Biomechanics Balance and Stability What is Balance What is Stability Balance or Unbalance Stable or Unstable Stability Principles Static and Dynamic Balance Stability Consequences

Stability Stable Base Dynamic Balance Lever Alignment Batting and Bowling

Paralysis By Analysis : Communication is the key – K.I.S.S.

What is Biomechanics?: BIOMECHANICS is the study of the scientific principles which contribute to human movement. BIOMECHANICS studies the internal forces (generated by muscles, tendons) and the external forces (gravity, resistance) acting on a human body

Coaches need to understand: When How Why “Players with sound biomechanics are able to perform skills efficiently, with minimum fatigue or injury”

The Central Theme of Biomechanics

Balance and Stability

What Is Balance? Is the feeling of being in total control of the body without having to move or think about readjustments. (Centre of Gravity) What is Stability? Is the feeling of being firmly fixed in a strong position which is not likely to move or change (Stable Base)

Balanced or Unbalanced ??

Stable or Unstable ??

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Stability Principles A body is balanced when its centre of gravity is vertically within its base of support A body loses balance when its centre of gravity is vertically outside its base of support

Static & Dynamic Balance Balance can involve a fixed base (static balance), or maintaining body control during movement (dynamic balance)

STABILITY – DYNAMIC BALANCE

Stability - Consequences Balance is affected when any body part is moved away from the centre of gravity When balance is lost or affected readjustments must occur "ACTION Vs REACTION"

Stability A STABLE BASE enables FULL FORCE GENERATION The bat starts to move FORWARD only after the front FOOT has made CONTACT with the GROUND The legs remain BRACED to ensure maximum force generation

Stable Base A stable base ensures : Eyes are still, so perception is enhanced Resistance to work the body levers against Body energy is transferred efficiently to the bat / ball

Dynamic Balance Note the uncontrolled head position in this example, why? Delivery stride forms a dynamic base of support – not aligning at target CAN be dangerous!

LEVER ALIGNMENT To maximise POWER and CONTROL all body levers must move along the target line “Direct the energy / core of the body at the target”

Batting Step at target Rotate shoulders in direction of target Align front elbow with target Bowling Pump elbows up and down target line Keep ball in close to body Drag front elbow down target line Rotate shoulders vertically towards target