Sitting posture and neck and shoulder muscle activities at different screen height settings of the visual display terminal

被引:71
作者
Villanueva, MBG
Jonai, H
Sotoyama, M
Hisanaga, N
Takeuchi, Y
Saito, S
机构
[1] NATL INST IND HLTH,TAMA KU,KAWASAKI,KANAGAWA 214,JAPAN
[2] NAGOYA UNIV,SCH MED,DEPT HYG,SHOWA KU,NAGOYA,AICHI 466,JAPAN
关键词
visual display terminal (VDT); screen height; posture; neck extensor muscle; trapezius muscle; electromyography (EMG);
D O I
10.2486/indhealth.35.330
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The effects of the VDT screen height on working posture and electromyographic (EMG) activities of the neck and shoulder muscles were determined in 10 healthy subjects. The subjects performed a mouse-driven interactive task at the screen height settings of 80, 100 and 120 cm. Changes in body positions were measured by video image and frame analysis. Surface EMG recordings were done on the neck extensor muscle and the descending part of the trapezius muscle, both on the right side. The results of the postural analysis showed that at higher screen height settings, the neck became significantly more erect. The subjects also assumed a more backward-leaning trunk position at higher screen heights. The EMG activities of the neck and shoulder muscles were related to the neck angle and trunk inclination, respectively. A more flexed neck produced significantly higher neck extensor muscle activities. A backward-leaning trunk was also noted to decrease trapezius muscle activity in some subjects.
引用
收藏
页码:330 / 336
页数:7
相关论文
共 24 条
[1]  
[Anonymous], SCANDINAVIAN J REH S
[2]  
ARDNT R, 1983, AM IND HYG ASSOC J, V44, P437
[3]   MUSCULOSKELETAL DISORDERS AMONG VISUAL-DISPLAY TERMINAL WORKERS - INDIVIDUAL, ERGONOMIC, AND WORK ORGANIZATIONAL-FACTORS [J].
BERGQVIST, U ;
WOLGAST, E ;
NILSSON, B ;
VOSS, M .
ERGONOMICS, 1995, 38 (04) :763-776
[4]  
Cailliet R., 1981, SHOULDER PAIN, V2nd, P38
[5]  
Chaffin D B, 1973, J Occup Med, V15, P346
[6]  
COLOMBINI D, 1986, ERGONOMICS WORKING P, P331
[7]   IMPROVING THE SITTING POSTURE OF CAD CAM WORKERS BY INCREASING VDU MONITOR WORKING HEIGHT [J].
DEWALL, M ;
VANRIEL, MPJM ;
AGHINA, JCFM ;
BURDORF, A ;
SNIJDERS, CJ .
ERGONOMICS, 1992, 35 (04) :427-436
[8]  
Hagberg M., 1995, Work with Display Units 94. Selected Papers of the Fourth International Scientific Conference on Work with Display Units, P381
[10]   Source document position as it affects head position and neck muscle tension [J].
Hamilton, N .
ERGONOMICS, 1996, 39 (04) :593-610