Pitching Biomechanics and Muscle Recruitment

A series of vocabulary flashcards detailing the joint movements and muscle recruitment (concentric and eccentric) during the Windup Cocking, Acceleration, and Follow through phases of pitching.

Windup Cocking Shoulder Girdle Movements

Upward rotation, elevation, and adduction

Windup Cocking Shoulder Girdle Concentric Muscles

Trapezius (con), Serratus anterior(con), Levator scapulae (con), and Rhomboid (con)

Windup Cocking Shoulder Joint Movements

Abduction and external rotation

Windup Cocking Shoulder Joint Concentric Muscles

Deltoid (con), Supraspinatus(con), Infraspinatus(con), and Teres minor(con)

Windup Cocking Elbow, Wrist, and Finger Movements

Elbow flexion, wrist extension, and finger flexion

Windup Cocking Elbow, Wrist, and Finger Concentric Muscles

Bicepts brachii, Brachialis (con), Brachioradialis (con), extensor carpi ulnaris, extensor carpiradialis longus, brevis (con), Flexor digitorum profundus and flexor digitorum superficialis (con)

Acceleration Shoulder Girdle Movements

Abduction and Upward rotation

Acceleration Shoulder Girdle Muscles

Trapezius (con), Serratus anterior(con), and Pectoralis minor

Acceleration Shoulder Joint Movements

Abduction (initially), Internal rotation, and Horizontal adduction

Acceleration Shoulder Joint Concentric Muscles

Deltoid (con), Supraspinatus(con), Lattismus dorsi(con), Pectoris major(con), Subscapularis(con), and Teres major (con)

Acceleration Elbow, Wrist, and Finger Movements

Elbow extension, wrist flexion, and finger extension

Acceleration Elbow, Wrist, and Finger Concentric Muscles

Tricepts brachii (con), Flexor carpi radialis, Flexor carpi ulnaris Palmaris longus (con), and extensor digitorum muscle(con)

Follow through Joint Movements

Shoulder: Horizontal adduction and internal rotation; Elbow: extension; Wrist: flexion; Finger: extension

Follow through Eccentric Muscles

Deltoid (ecc), Infraspinatus(ecc), Teres major(ecc), Teres minor(ecc), Lattismus dorsi (ecc), Bicepts brachii (ecc), Brachialis (ecc), Brachioradialis (ecc), extensor carpi ulnaris, and extensor carpiradialis longus, brevis (ecc)