Chair side bends machine trunk rotation 12

, chair side bends , machine trunk rotation
12- supraspinatus
- origin : medial two thirds of the supraspinous fossa of the scapula
and the deep fasica that covers the muscles
- insertion : most superior fact on the greater tubercle of the humerus
- actions and functions : rotator cuff muscle , intiation of abduction of
arm to 15 at glenohumeral joint
- exercise : back presses , dumbbell internal rotation , dumbbell
external rotation

13- teres major
- origin : elongate oval area on posterior surface of the inferior angle
of the scapula
- insertion : medial lip of the inter tubercular sulcus on the anterior
surface of the humerous
- action and functions : medial rotation and extension of the arm at
the glenohumeral joint
- exercise : barbell pull overs , reverse chine ups , t-bar row , bent
rows , pull ups , lat pull down . seated row , one arm dumbbell
rows , close grip lat pull down
14- biceps femoris
- origin long head : ischial tuberosity
- origin short head : lower half of linea aspera and latera condyloid
ridge
- insertion : lateral condyle of tibia and head of tibia
- actions and functions : extension of hip , flexion of knees , internal
rotation of hip and knee
- exercise : bridging , good morning , lying leg curls , seated leg curls
15- soleus
- origin : soleal line and medial border of tibia , posterior aspect of
fibular head and adjacent surface of neck and proximal shaft
tendinous arch between tibial and fibular attachment
- insertion : via calcaneal tendon to posterior surface of the calcaneus
- actions and functions : plantar flexes the foot
- exercise : standing calf raise , one leg toe raises , donkey calf raise ,
seated calf raise
16- semi membranosus
- origin : I chial tuberosity
- insertion : posteromediat surface of medial tibial condyle
- action and function : extension of hip , flexion of the knees , internal
rotation of hip and knee
- exercise : good morning , prone leg curl , seated leg curl , standing
leg curl .
17- deltoid

- origin : inferior edge of the crest of the spine of the scapula , lateral
margine of the acromion , anterior border of lateral one , third of
clavicle
- insertion : deltoid tuberosity of humerus
- action and function : major abductor of arm cabducts the arm
beyond unitial 15 done by supraspinatus clavicular fibers assist in