OVERARM%20THROW%20PATTERN

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OVERARM THROW PATTERN

• 1. Step forward
• 2. Pelvis/trunk forward
• 3. Pelvis rotates
• 4. Trunk rotates
• 5. Shld. protraction

• 6. Shld. Trans. Adduct
• 7. Shld. Medial rotate
• 8. Elbow extension
• 9. Forearm pronation
• 10. Wrist/Hand flexion

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Step Forwardwithcontra-lateral leg
3
Pelvis and Hip Rotationtoward target
4
Trunk Rotationtoward target
5
Transfer L to arm by reducing/stopping L in
shoulders
6
Shoulder Protraction and Transverse Adduction
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Shoulder Medial Rotation
8
Elbow ExtensionandForearm Pronation
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Motion Analysis

• 1. Segments involved
• 2. Movements involved
• 3. Sequence of movements
• 4. Muscles causing movements

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General Principles

• Smaller/lighter projectiles allow a greater
  number of segments to contribute to the
  performance
• Smaller/lighter projectiles allow for a larger k
• Smaller/lighter projectiles allow the smaller
  segments to give greatest contribution e.g.
  Shld. medial rotation Forearm pronation
• Larger/heavier projectiles get greatest
  contribution from larger segments

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Performance Errors Kinetic Link

• 1. Segmental Positioning e.g. placing distal in
  front of proximal
• 2. Sequence of Movements/Timing e.g.
  insufficient lagging behind of the distal parts
• 3. Lack of Power/Strengthi.e. tendency to push
  rather than lag and throw