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RESEARCH
Dr. Mark McKean PhD
SQUARE SHOULDERS
STRONG ARMS
RESEARCH
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WHAT YOU WILL LEARN
� Ideal Shoulder position
� Testing shoulder posture
� Flexible Shoulders
� Square Shoulders
� Strong Arms
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IDEAL SHOULDER POSITIONIDEAL SHOULDER POSITION
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TEST A FRIENDTEST A FRIEND
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FLEXIBLE SHOULDERSFLEXIBLE SHOULDERS
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COMMON PROBLEMS
� Poor overhead flexibility
� Short rotator cuff
� Rounded shoulders
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SHOULDER FLEXION TEST
� Arms above head
� Wrists touch floor
� Elbow bent
� Scapula moves out
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SHOULDER ROTATION TEST
� Arm bent 90o
� 20o off floor in front
� Arm touches floor above
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PEC MINOR
� Arms by side
� AC joint off floor more than 5 cm
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SQUARE SHOULDERSSQUARE SHOULDERS
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POOR THORACIC CURVE
Soldiers and hunchbacks
� You must try and correct curve first
� Scapula must sit flat o curve
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GORILLAS
� Forward Shoulders
� Rounded shoulders
� Round backs
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EIFFEL TOWERS
� Low Shoulders
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STRONG ARMSSTRONG ARMS
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MUSCLE BALANCE
� Long head of Bicep
� Long head of Tricep
� Bicep V Tricep strength
� Grip Strength
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WEAK ARMS
� Weak scapula stabilisers
� Poor ROM at shoulder
� Weak push pull muscles of shoulder
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STRENGTH RATIOS
Muscle GroupMark McKean
(JSAMS-2009)
Key Predictor Exercise 1 RM PU (close grip)
Deltoid - 8RM 1 arm Shoulder
press 18%
External Rotators – 8RM Ext Rot
on knee 9%
Lower Trapezius – 8RM Bent
over trap raise 6%
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1 ARM SHOULDER PRESS
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BENT OVER TRAP RAISE
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MARK MCKEAN PHDMARK MCKEAN PHD
Post Doctoral Research Fellow
Australian Institute of Fitness Research
University of Sunshine Coast
[email protected]