Lloyd Dean

Joint Actions

AimsBy the end of the lesson you should be able

to:

State the major joint actions within the body

Draw diagrams for each joint action

Apply gym based examples of the different types of movement for each joint action

Joint Actions

Flexion Extension

Decrease the angle at a joint

Bicep Curl

Increase the angle at a joint

Triceps Curl

Joint Actions

Adduction Abduction

Movement towards the midline of the body

Lateral Raises (Downward phase)

Movement away from the midline of the body

Lateral Raises (Upward phase)

Joint Actions

Elevation Depression

Upward movement of the should girdle

Dumbbell Shrugs (Upward phase)

Downward movement of the shoulder girdle

Dumbbell shrugs (Downward phase)

Joint Actions

Plantar Flexion Dorsiflexion

Movement that brings the sole of the foot downwards with toes pointed

Running

Movement that brings the top of the foot towards the shin

Leg Extension (Machine)

Joint Actions

Pronation Supination

Rotation of the forearm with palm facing down

Pronated grip of barbell

Rotation of the forearm with palm facing up

Supinated grip of barbell

Joint Actions

Eversion Inversion

Foot slightly rotated outwards

Foot slightly rotated inwards

Joint Actions

Hyper-Extension Lateral Flexion

Movement above the normal range of motion

Lower back extensions

Sideward’s movement to reduce the angle at joint

Dumbbell side bends

Joint Actions

CircumductionInternal and External Rotation

360 degree rotation

Circling of arms

Internal – Also known as medial rotation

Movement of the hand either inwards towards the body or down to point towards the floor

External – Also known as lateral rotation

Movement of the hand away from the body

Joint Actions

Horizontal Flexion Horizontal Extension

Moving arm forwards in horizontal plane (arm starts from abducted position)

Returning arm to the abducted position