【論文摘要】Upper Quarter Functional Performance and Glenohumeral Internal Rotation Deficit in Volleyball Players With and Without Scapular Dyskinesis

【論文摘要】有無肩胛骨運動失能之排球選手在上肢功能性表現和盂肱關節內旋活動度缺損之差異

賴星霓(Hsing-Ni Lai) ； 黃崇舜(Tsun-Shun Huang) ； 魏孝臻(Hsiao-Chen Wei) ； 趙遠宏(Yuan-Hung Chao) ； 林居正(Jiu-Jenq Lin)

《物理治療》 46卷2期 (2021/06) Pp. 97-98

https://doi.org/10.6215/FJPT.202106.O04

摘要

Background and Purpose: Few studies have investigated the influence of scapular dyskinesis on upper quarter functional performance in overhead athletes. The purpose of this study was to investigate differences in shoulder flexibility, muscle strength, self-reported shoulder questionnaire scores, and upper quarter functional performance in volleyball players with and without scapular dyskinesis. Methods: Thirty-eight amateur male volleyball players were recruited and classified into two groups based on dyskinesis (n = 24) or no dyskinesis (n = 14). The main outcome measures were the shoulder range of motion difference between the 2 sides, self-reported questionnaire scores (Disability of Arm, Shoulder and Hand questionnaire [DASH] and Kerlan-Jobe Orthopaedic Clinic questionnaire [KJOC]), and upper quarter functional assessments, including the closed kinetic chain upper extremity stability test (CKCUEST), Y-balance test-upper quarter (YBTUQ), unilateral seated shot-put test (USSP), and push-up test (PU). Results: Our findings indicated lower YBTUQ scores in bilateral arms (8.0-9.3, p = 0.009), larger glenohumeral internal rotation deficit (GIRD) (8.1°, p = 0.029), and greater prevalence of shoulder symptoms (34%, p = 0.044) in the volleyball players with scapular dyskinesis than in those without it. There were no differences in the findings of the other performance tests between the 2 groups. Conclusion: Scapular dyskinesis may be more highly associated with core muscle and upper extremity stability than with upper extremity plyometric ability, power, and endurance. The causal relationships among scapular dyskinesis, core muscle stability, GIRD, and shoulder injuries in overhead athletes should be further investigated. Clinical Relevance: The results of this study can be applied on forming training strategy for volleyball players with scapular dyskinesis, particularly recruit the core stability and upper extremity stability into the training program.