OVERARM THROW PATTERN 1. Step forward 6. Shld. Trans. Adduct 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
Step Forward with contra-lateral leg
Pelvis and Hip Rotation toward target
Trunk Rotation toward target
Transfer L to arm by reducing/stopping L in shoulders
Shoulder Protraction and Transverse Adduction
Shoulder Medial Rotation
Elbow Extension and Forearm Pronation
Motion Analysis 1. Segments involved 2. Movements involved 3. Sequence of movements 4. Muscles causing movements
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
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/Strength i.e. tendency to push rather than lag and “throw”