overhead press

Question 1

whats happening at joints

Answer 1

shoulder: flexion, horizontal flexion, abduction, adduction
elbow: flexes, extends
forearm: pronation, supination
wrist: extends, abducts/stabilised isometrically

upwards: concentric
downwards: eccentric

Question 2

peak flexion of elbow

Answer 2

estimation: 120 degrees
kinovea: greater tubercle, lateral epicondyle of humerus, ulnar styloid process

Question 3

peak shoulder abduction

Answer 3

estimate: 160 degrees
lateral epicondyle, greater tubercle, mid axillary line
extended line from greater tubercle

Question 4

prime movers

Answer 4

pectoralis major flexing shoulder
deltoid + supraspinatus abduct
rhomboids retracting shoulder
serratus anterior protracting

biceps brachii flexing elbow
triceps brachii extending elbow

ED, ECRL + B, ECU extending + deviating wrist

Question 5

form

Answer 5

sternocleidomastoid keeping head erect
erector spinae, mutlifidus stabilising trunk

rotator cuffs stabilising shoulder joint

pec minor + serratus anterior protract shoulder

latissimus dorsi stabilising shoulder movement

abdominals stabilising core

Gluteus maximus + hamstrings keep hip extended

Question 6

muscle groups

Answer 6

shoulder flexion: Pectoralis Major, Deltoid (Ant), biceps brachii, Coracobrachialis
abduction: Supraspinatus, Deltoid
adduction: Pectoralis Major, Latissimus Dorsi, Teres Major, Coracobrachialis

elbow flexion: Biceps Brachii, Brachialis, Brachioradialis, Pronator Teres
extension: triceps, Anconeus

wrist extension: ED, ECRL + B, ECU, EI, EPL
abduction: FCR

Question 7

pectoralis major

Answer 7

origin: medial clavicle, manubrium, sternum, ribs + costal cartilages, external abdominal oblique aponeurosis
insertion: crest of greater tubercle of humerus

range: inner > outer > inner

concentrically contracts to flex shoulder as arms hold weight above head