Shoulder Girdle
This one muscle of the SG can be divided into 3 distinct parts, 2 of which perform actions that oppose each other
Trapezius (upper, middle, lower)
The muscles of the rotator cuff, listed in order of insertion from superior to inferior
supraspinatus, infraspinatus, teres minor, subscapularis
T or F: a muscle is stronger when acting concentrically compared to eccentrically
False; muscles are strongest when acting eccentrically between 80-130% of resting length
Performing a bench press on an incline may bias these fibers of the pectoralis major.
Clavicular
_____ muscles of the shoulder originate on the shoulder girdle and insert on the humerus.
Intrinsic
For everyone 2 degrees of overhead motion at the shoulder above 90, the scapula requires 1 deg of ______.
upward rotation
The cartilage ring around the glenoid fossa which helps to "deepen" the socket is known as the _____.
glenoid labrum
Although the copenhagen plank is primarily a core/LE exercise, there is a strong demand on the muscles of the _____ group to stabilize the ball and socket joint of the bottom shoulder so as to not collapse.
Rotator Cuff
The concentric phase of a bent over row involves this movement of the shoulder against gravity
Shoulder extension
If I were to instruct you to flex your elbow to 90 deg, then flex your shoulder to 90 deg, then internally and externally rotate your shoulder, you would be moving in this plane of motion
The only connection of the UE to the axial skeleton is through the ____ joint, which is a ______ type joint.
SC; saddle
This extrinsic muscle of the shoulder also plays a role in stabilization of the lumbar spine.
Latissimus dorsi
Movement of the shoulders and shoulder girdles is heavily dependent on adequate ROM in the _____ spine.
Thoracic
In the eccentric portion of the pull-up as you are lowering down from the bar, these muscles must be able to lengthen eccentrically to allow the scapulae to upwardly rotate.
Rhomboids/downward rotators
Scapular winging may be associated with weakness of this muscle.
If I were to instruct you to "pinch your shoulder blades toward your spine," which scapular motion am I cueing have you perform?
Scapular retraction
External rotation
According to the force-velocity relationship of muscles, a muscle moving at its fastest concentric speed will create a relatively _____ amount of force.
small
A chin-up performed with close grip and forearms supinated will likely bias this muscle.
Biceps brachii
This common injury is associated with repetitive overhead motion, such as throwing.
Falling on the lateral shoulder may result in injury to this joint
Deltoid
You finish your final and head to Big's to celebrate; as you toast to a job well-done, which 2 muscles of the shoulder is most active as you flex the shoulder based on its CSA?
Anterior deltoid/Long head biceps
In order to perform a back squat correctly, you must have adequate range of motion at the shoulder (GHJ) into ____ and at the shoulder girdle into ____
Hint: think about what the scap needs to do as the shoulder moves!
External rotation/retraction
True!!!