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Isometric shoulder adduction exercise

Isometric shoulder adduction
Isometric shoulder adduction

To perform the Isometric shoulder adduction exercise :

 

  • Place pillow or towel roll between arm and body as shown.
  • Push arm against side of body.
  • Do not hold breath.
  • Maintain the contraction for few seconds and release.
  • Repeat for 10 times.

Arm adduction is the opposite motion of arm abduction. The muslces involved in this action are: latissimus dorsi, teres major, infraspinatus, teres minor, pectoralis major, coracobrachialis.

Latissimus Dorsi

ActionAdducts and medially rotates humerus; extends the shoulder joint as in pulling on oars of a rowboat; produces back swing of arm in such actions as walking or bowling; with hands grasping overhead objects, pulls body forward and upward, as in climbing; produces strong down strokes of arm as in hammering and swimming (nicknamed the “swimmer’s muscle”); aids in deep inspiration, sudden expiration as in sneezing and coughing, and prolonged forceful expiration as in singing or playing a wind instrument.


Skeletal Attachments: 

  • Vertebrae T7–L5; lower three or four ribs; iliac crest; thoracolumbar fascia
  • Floor of intertubercular sulcus of humerus

Teres Major: Extends and medially rotates humerus; contributes to arm swinging.

Skeletal Attachments :

  • Inferior angle of scapula
  • Medial lip of intertubercular sulcus of humerus

Teres Minor:Modulates action of deltoid, preventing humeral head from sliding upward as arm is abducted; adducts and laterally rotates humerus.

Skeletal Attachments :

  • Lateral border and adjacent posterior surface of scapula
  • Greater tubercle of humerus;posterior surface of joint capsule



    CoracobrachialisFlexes and medially rotates arm; resists deviation of arm from frontal plane during abduction.

    Skeletal Attachments :

    • Coracoid process of scapula
    • Medial aspect of humeral shaft

    InfraspinatusModulates action of deltoid, preventing humeral head from sliding upward; laterally rotates humerus

    Skeletal Attachments
    • Infraspinous fossa of scapula
    • Greater tubercle of humerus