Table 1.

Muscles included in model

	Muscle
DELT1	Anterior deltoid
DELT2	Medial deltoid
DELT3	Posterior deltoid
SUPSP	Supraspinatus
INFSP	Infraspinatus
SUBSC	Subscapularis
TMIN	Teres minor
TMAJ	Teres major
PT	Pronator teres
PECM1	Pectoralis major clavicular
PECM2	Pectoralis major medial
PECM3	Pectoralis major inferior
LAT1	Latissimus dorsi superior
LAT2	Latissimus dorsi medial
LAT3	Latissimus dorsi inferior
CORB	Coracobrachialis
TRIlong	Triceps long head
TRIlat	Triceps lateral head
TRImed	Triceps medial head
ANC	Anconeus
SUP	Supinator
BIClong	Biceps long head
BICshort	Biceps short head
BRA	Brachialis
BRD	Brachioradialis
ECRL	Extensor carpi radialis longus
ECRB	Extensor carpi radialis brevis
ECU	Extensor carpi ulnaris
FCR	Flexor carpi radialis
FCU	Flexor carpi ulnaris