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

Supplemental Tables 1-5 for manuscript submission.<br>Table captions are listed below:<br><b>Supplemental Table 1: </b>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.<br><b>Supplemental Table 2: </b>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. <br><b>Supplemental Table 3: </b>Main effects statistics for the linear mixed effects models describing associations between computed similarity indices and covariates. Bolded terms indicate significance at p &lt; 0.05. <b></b><br><b>Supplemental Table 4: </b>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 <br><b>Supplemental Table 5: </b>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 &lt; 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.<b></b><br>

本数据集为论文投稿配套的补充表1至5。各表标题说明如下：
<b>补充表1：</b>表面肌电图（surface electromyography）电极放置方案。除非另有说明，受试者手臂取解剖位时放置电极。位置描述中涉及的距离均为近似值，可根据个体解剖结构差异进行调整。
<b>补充表2：</b>用于描述计算相似性指标与协变量间关联的线性混合效应模型的固定效应参数。本模型的参照条件为肩外展平面角度0°、外展45°的肩部状态。结果以均值±标准差形式报告。LL——对数似然值（log-likelihood）。
<b>补充表3：</b>用于描述计算相似性指标与协变量间关联的线性混合效应模型的主效应统计量。加粗字体表示显著性水平p<0.05。
<b>补充表4：</b>用于描述肌肉加权贡献与协变量间关联的线性混合效应模型的固定效应参数。本模型的参照条件为肩外展平面角度0°、外展45°且协同聚类为1的肩部状态。结果以均值±标准差形式报告。缩写说明：SC：胸大肌胸肋部（sternocostal fiber region of pectoralis major），CL：胸大肌锁骨部（clavicular fiber region of pectoralis major），AD：三角肌前束（anterior deltoid），MD：三角肌中束（medial deltoid），PD：三角肌后束（posterior deltoid），UT：斜方肌上部（upper trapezius），MT：斜方肌中部（middle trapezius），LT：斜方肌下部（lower trapezius），LD：背阔肌（latissimus dorsi），TM：大圆肌（teres major），IF：冈下肌（infraspinatus），SA：前锯肌（serratus anterior），BI：肱二头肌长头（biceps brachii long head），BR：肱桡肌（brachioradialis），TriLg：肱三头肌长头（triceps brachii long head），TriLt：肱三头肌外侧头（triceps brachii lateral head）；POE——外展平面（plane of elevation），Elev——外展角度（elevation），Rot——旋转角度（rotation），LL——对数似然值（log-likelihood）。
<b>补充表5：</b>用于描述基于肌肉协同分析得到的肌肉权重与协变量间关联的线性混合效应模型的主效应统计量。加粗字体表示显著性水平p<0.05。缩写说明：SC：胸大肌胸肋部（sternocostal fiber region of pectoralis major），CL：胸大肌锁骨部（clavicular fiber region of pectoralis major），AD：三角肌前束（anterior deltoid），MD：三角肌中束（medial deltoid），PD：三角肌后束（posterior deltoid），UT：斜方肌上部（upper trapezius），MT：斜方肌中部（middle trapezius），LT：斜方肌下部（lower trapezius），LD：背阔肌（latissimus dorsi），TM：大圆肌（teres major），IF：冈下肌（infraspinatus），SA：前锯肌（serratus anterior），BI：肱二头肌长头（biceps brachii long head），BR：肱桡肌（brachioradialis），TriLg：肱三头肌长头（triceps brachii long head），TriLt：肱三头肌外侧头（triceps brachii lateral head）。