書寫黑板時手臂抬舉角度範圍之肌力分析

Muscular Strength Analysis of Lifting Arm Angle Range for Writing the Blackboard

盧瑞琴(Lai-Chin Lu) ； 劉致宏(Chih-Hung Liu) ； 張凱琳(Kai-Lin Chang) ； 何佳倩(Chia-Chien Ho) ； 彭雅玲(Ya-Ling Peng) ； 黃宇晨(Yu-Chen Huang)

《商業現代化學刊》 5卷3期 (2010/05) Pp. 159-177

https://doi.org/10.6132/JCM.2010.5.3.10

摘要

For the latest years, shoulder impingement syndrome occurs frequently in the clinical shoulder problem, and occurs frequently for workers need to lifting arm, as if teaching career has become the most common type of musculoskeletal injuries. To understand the physiological load of the long-term written blackboard when lifting arm, this study used electromyogram (EMG) to research muscle activity for the relevant muscles of the rotator cuff are included supraspinatus and infraspinatus. In this study, the experimental factors included sex (male, female); time (1, 3, 5, 7, 9 minutes); write range (lifting the arm angle of 45-75°, 75-105°, 105-135°); muscles (supraspinatus and infraspinatus).
The results of this study are as follow:
1.lifting arm angle increases, the average of the two muscles NEMG are significant differences (p value＜0.05).
2.But only in lifting the nine minutes when there are significant differences.
3.the average of male NEMG is larger than female.
Also confirmed the sex, the two muscles and writes range have significant differences in physical load. Therefore, this study provides hope that workers need to constantly lifting arm as a reference, and avoid shoulder burden and shoulder related diseases.

關鍵字

肩夾擠症候群 ； 肌電值 ； 旋轉肌袖

並列摘要

For the latest years, shoulder impingement syndrome occurs frequently in the clinical shoulder problem, and occurs frequently for workers need to lifting arm, as if teaching career has become the most common type of musculoskeletal injuries. To understand the physiological load of the long-term written blackboard when lifting arm, this study used electromyogram (EMG) to research muscle activity for the relevant muscles of the rotator cuff are included supraspinatus and infraspinatus. In this study, the experimental factors included sex (male, female); time (1, 3, 5, 7, 9 minutes); write range (lifting the arm angle of 45-75°, 75-105°, 105-135°); muscles (supraspinatus and infraspinatus).
The results of this study are as follow:
1.lifting arm angle increases, the average of the two muscles NEMG are significant differences (p value＜0.05).
2.But only in lifting the nine minutes when there are significant differences.
3.the average of male NEMG is larger than female.
Also confirmed the sex, the two muscles and writes range have significant differences in physical load. Therefore, this study provides hope that workers need to constantly lifting arm as a reference, and avoid shoulder burden and shoulder related diseases.

並列關鍵字

Shoulder Impingement Syndrome ； Electromyogram ； Rotator Cuff