Posture-Dependent Neuromuscular Contributions to Three-Dimensional Isometric Shoulder Torque Generation: Supplemental Tables

Supplemental Tables 1-5 for manuscript submission.
Table captions are listed below:
Supplemental Table 1: Surface electromyography electrode placement. Electrodes were
placed with participants arms in the anatomical position unless otherwise
noted. Distances included in the descriptions of locations are approximations
which were subject to change depending on individual anatomy.

Supplemental Table 2: Fixed effects
parameters for the linear mixed effects models describing associations between computed
similarity indices and covariates. The reference condition for these models was
the shoulder
with a plane of elevation angle of 0° and elevated 45°. Reported as mean ± standard deviation. LL – log-likelihood.
Supplemental
Table 3: Main effects statistics for the linear mixed effects models describing
associations between computed similarity indices and covariates. Bolded terms
indicate significance at p < 0.05.

Supplemental
Table 4: Fixed effects
parameters for the linear mixed effects models describing associations between
muscle weighted contributions and covariates. The reference condition for these
models was the shoulder with a plane of elevation angle
of 0°, elevated 45°, and synergy cluster 1. Reported as mean ± standard deviation. Abbreviations: SC:
sternocostal fiber region of pectoralis major, CL: clavicular fiber region of
pectoralis major, AD: anterior deltoid, MD: medial deltoid, PD: posterior
deltoid, UT: upper trapezius, MT: middle trapezius, LT: lower trapezius, LD:
latissimus dorsi, TM: teres major, IF: infraspinatus, SA: serratus anterior,
BI: biceps brachii long head, BR: brachioradialis, TriLg: triceps brachii long
head, TriLt: triceps brachii lateral head, POE – plane of elevation; Elev – elevation; Rot – rotation;
LL – log-likelihood

Supplemental
Table 5: Main effects statistics for the linear mixed effects models describing
associations between muscle weights derived from the muscle synergy analysis and
covariates. Bolded terms indicate significance at p < 0.05. Abbreviations: SC: sternocostal
fiber region of pectoralis major, CL: clavicular fiber region of pectoralis
major, AD: anterior deltoid, MD: medial deltoid, PD: posterior deltoid, UT:
upper trapezius, MT: middle trapezius, LT: lower trapezius, LD: latissimus
dorsi, TM: teres major, IF: infraspinatus, SA: serratus anterior, BI: biceps
brachii long head, BR: brachioradialis, TriLg: triceps brachii long head,
TriLt: triceps brachii lateral head.