Pires Elisa Doria, Camargo Paula Rezende
Laboratory of Analysis and Intervention of the Shoulder Complex, Department of Physical Therapy, Universidade Federal de São Carlos, Brazil.
Laboratory of Analysis and Intervention of the Shoulder Complex, Department of Physical Therapy, Universidade Federal de São Carlos, Brazil.
Clin Biomech (Bristol). 2018 May;54:8-15. doi: 10.1016/j.clinbiomech.2018.02.017. Epub 2018 Feb 27.
This study measured strength of the trunk and hip, and compared Y Balance Test and Upper Quarter Y Balance Test in individuals without and with scapular dyskinesis. Strength and endurance of the scapulothoracic muscles were also assessed.
Forty-four individuals without shoulder pain were divided in 2 groups: without scapular dyskinesis (age 26.00, SD 4.10 years) and scapular dyskinesis (age 23.68, SD 4.20 years). Scapular dyskinesis was assessed by clinical observation of the scapular motion during arm elevation, and was classified as present or absent. A handheld dynamometer was used to measure the isometric strength of the trunk flexors and lateral flexors, hip extensors and abductors, lower trapezius, serratus anterior, and latissimus dorsi. Y and Upper Quarter Y Balance Tests were performed with the individual in single-limb and 3-point plank position, respectively. Endurance of the scapulothoracic muscles was assessed with the individuals in prone with the arm at 135° abduction. Independent t-test and Mann-Witney test were used for comparison between groups. A P < 0.05 was considered significant. Effect sizes between groups were also calculated.
No differences (P > 0.05) were demonstrated between groups for all variables. Moderate effect size (d ~ 0.40) was found for the trunk flexors and hip extensors, and endurance of the scapulothoracic muscles, whereas the scapular dyskinesis group showed less strength and endurance in relation to the group without dyskinesis.
Strength of the trunk flexors and hip extensors, and endurance of the scapulothoracic muscles seem to have influence in scapular dyskinesis in non-athletes without shoulder pain.
本研究测量了躯干和髋部的力量，并比较了无肩胛运动障碍和有肩胛运动障碍个体的Y平衡测试和上半区Y平衡测试。还评估了肩胛胸廓肌肉的力量和耐力。
44名无肩部疼痛的个体被分为两组：无肩胛运动障碍组（年龄26.00，标准差4.10岁）和肩胛运动障碍组（年龄23.68，标准差4.20岁）。通过观察手臂抬高时肩胛的运动对肩胛运动障碍进行临床评估，并将其分为存在或不存在。使用手持测力计测量躯干屈肌和侧屈肌、髋伸肌和外展肌、下斜方肌、前锯肌和背阔肌的等长力量。Y平衡测试和上半区Y平衡测试分别让个体处于单腿站立和三点平板支撑姿势下进行。让个体俯卧，手臂外展135°，评估肩胛胸廓肌肉的耐力。采用独立样本t检验和曼-惠特尼检验进行组间比较。P<0.05被认为具有统计学意义。还计算了组间的效应量。
所有变量在两组之间均未显示出差异（P>0.05）。在躯干屈肌、髋伸肌和肩胛胸廓肌肉耐力方面发现了中等效应量（d~0.40），而肩胛运动障碍组相对于无运动障碍组显示出较低的力量和耐力。
在无肩部疼痛的非运动员中，躯干屈肌和髋伸肌的力量以及肩胛胸廓肌肉的耐力似乎对肩胛运动障碍有影响。
