Shoulder Girdle Motion Analysis

Steps to take when viewing an activity

1. break the skill down into phases 2. determine which joints are active 3. determine what the action is at the joint 4. determine what type of contraction is occurring 5. determine which muscles are performing the agonist action (for that type) and antagonist action

bench press initial movement (lifting) phase

movement description: lifting phase to upward position joint movement: abduction, protraction agonist: serratus anterior, pectoralis minor contraction type: concentric

overhead press initial movement (lifting) phase

movement description: lifting phase to upward position joint movement: upward rotation, elevation agonist: trapezius (upper, middle, lower), rhomboids, levator scapulae, serratus anterior contraction type: concentric

prone row secondary movement (lowering) phase

movement description: lowering phase joint movement: abduction, protraction agonist: trapezius (lower and middle), rhomboids contraction type: eccentric

barbell shrugs secondary movement (lowering) phase

movement description: lowering phase joint movement: depression agonist: trapezius (upper and middle), levator scapulae, rhomboids contraction type: eccentric

overhead press secondary movement (lowering) phase

movement description: lowering phase to starting position joint movement: downward rotation, depression agonist: trapezius (upper, middle, lower), rhomboids, levator scapulae, serratus anterior contraction type: eccentric

push up secondary movement (lowering) phase

movement description: lowering phase to starting position joint movement: scapular adduction/retraction agonist: serratus anterior, pectoralis minor contraction type: eccentric

bench press secondary movement (lowering) phase

movement description: lowering to start position joint movement: adduction, retraction agonist: serratus anterior, pectoralis minor contraction type: eccentric

dip secondary movement (lowering) phase

movement description: lowering to start position joint movement: upward rotation, elevation agonist: levator scapulae, pectoralis minor, rhomboids, trapezius (lower) contraction type: eccentric

lat pull initial movement (lifting) phase

movement description: pull down to below chin position joint movement: adduction, depression, downward rotation agonist: trapezius lower and middle, pectoralis minor, levator scapulae, rhomboids contraction type: concentric

prone row initial movement (lifting) phase

movement description: pull up phase joint movement: adduction, retraction agonist: trapezius (lower and middle), rhomboids contraction type: concentric

barbell shrugs initial movement (lifting) phase

movement description: pull up phase joint movement: elevation agonist: trapezius (upper and middle), levator scapulae, rhomboids contraction type: concentric

chin up initial movement (lifting) phase

movement description: pulling up joint movement: adduction, depression, downward rotation agonist: trapezius lower and middle, pectoralis minor, rhomboids, levator scapulae contraction type: concentric

push up initial movement (lifting) phase

movement description: pushing phase to up position joint movement: scapular abduction/protraction agonist: serratus anterior, pectoralis minor contraction type: concentric

dip initial movement (lifting) phase

movement description: pushing up joint movement: downward rotation, depression agonist: pectoralis minor, levator scapulae, rhomboids, trapezius (lower) contraction type: concentric

chin up secondary movement (lowering) phase

movement description: return or lowering phase joint movement: abduction, elevation, upward rotation agonist: trapezius lower and middle, pectoralis minor, rhomboids, levator scapulae contraction type: eccentric

lat pull secondary movement (lowering) phase

movement description: return phase to starting position joint movement: abduction, elevation, upward rotation agonist: trapezius lower and middle, pectoralis minor, levator scapulae, rhomboids contraction type: eccentric