Effects of the height of ball-backrest on head and shoulder posture and trunk muscle activity in VDT workers

Industrial Health

Volumn 46, Issue 3, 2008, Pages 289-297

  Yoo, Won Gyu ^a   Yi, Chung Hwi ^b   Cho, Sang Hyun ^b   Jeon, Hye Seon ^b   Cynn, Heon Seock ^c   Choi, Houng Sik ^c  

^a Inje University   (South Korea)

^b Yonsei University Wonju   (South Korea)

^c Hanseo University   (South Korea)

Author keywords

Backrest height; Ball backrest chair; Forward head posture; Work related musculoskeletal disorders

Indexed keywords

ABDOMINAL WALL MUSCULATURE; ADULT; ANALYSIS OF VARIANCE; ARTICLE; BODY POSTURE; CLINICAL ARTICLE; ELECTROMYOGRAPHY; EXERCISE; FEMALE; FORWARD HEAD POSTURE; HEAD POSITION; HUMAN; KEYBOARD; KINEMATICS; MALE; MEASUREMENT; MUSCLE CONTRACTION; MUSCULOSKELETAL DISEASE; NECK; NECK MUSCLE; SHOULDER; SKELETAL MUSCLE; STATISTICAL SIGNIFICANCE; TRAPEZIUS MUSCLE; VISUAL DISPLAY UNIT; WORK DISABILITY;

ADULT; COMPUTER TERMINALS; CUMULATIVE TRAUMA DISORDERS; EQUIPMENT DESIGN; FEMALE; HEAD MOVEMENTS; HUMAN ENGINEERING; HUMANS; INTERIOR DESIGN AND FURNISHINGS; MALE; MUSCULOSKELETAL DISEASES; NECK; OCCUPATIONAL DISEASES; POSTURE; SHOULDER; USER-COMPUTER INTERFACE;

EID: 46049113666     PISSN: 00198366     EISSN: None     Source Type: Journal    
DOI: 10.2486/indhealth.46.289     Document Type: Article

References (44)

1. Szeto GP, Straker LM, O'Sullivan PB (2005) A comparison of symptomatic and asymptomatic office workers performing monotonous keyboard work-2: neck and shoulder kinematics. Man Ther 10, 281-91.
2. Pascarelli EF, Hsu YP (2001) Understanding work-related upper extremity disorders: clinical findings in 485 computer users, musicians, and others. J Occup Rehabil 11, 1-21.
3. Szeto GP, Straker L, Raine S (2002) A field comparison of neck and shoulder postures in symptomatic and asymptomatic office workers. Appl Ergon 33, 75-84.
4. Julius A, Lees R, Dilley A, Lynn B (2004) Shoulder posture and median nerve sliding. BMC Musculoskelet Disord 5, 23.
5. Barbe MF, Barr AE (2006) Inflammation and the pathophysiology of work-related musculoskeletal disorders. Brain Behav Immun 20, 423-9.
6. Werner RA, Franzblau A, Gell N, Ulin SS, Armstrong TJ (2005) A longitudinal study of industrial and clerical workers: predictors of upper extremity tendonitis. J Occup Rehabil 15, 37-46.
7. Aaras A, Fostervold KI, Ro O, Thoresen M, Larsen S (1997) Postural load during VDU work: a comparison between various work postures. Ergonomics 40, 1255-68.
8. Griegel-Morris P, Larson K, Mueller-Klaus K, Oatis CA (1992) Incidence of common postural abnormalities in the cervical, shoulder, and thoracic regions and their association with pain in two age groups of healthy subjects. Phys Ther 72, 425-31.
9. Hanten WP, Lucio RM, Russell JL, Brunt D (1991) Assessment of total head excursion and resting head posture. Arch Phys Med Rehabil 72, 877-80.
10. Moore MK (2004) Upper crossed syndrome and its relationship to cervicogenic headache. J Manipulative Physiol Ther 27, 414-20.
11. Burgess-Limerick R, Plooy A, Ankrum DR (1998) The effect of imposed and self-selected computer monitor height on posture and gaze angle. Clin Biomech (Bristol, Avon) 13, 584-92.
12. Chiu TT, Ku WY, Lee MH, Sum WK, Wan MP, Wong CY, Yuen CK (2002) A study on the prevalence of and risk factors for neck pain among university academic staff in Hong Kong. J Occup Rehabil 12, 77-91.
13. Helander M (2003) Forget about ergonomics in chair design? Focus on aesthetics and comfort! Ergonomics 46, 1306-19.
14. van Dieen JH, de Looze MP, Hermans V (2001) Effects of dynamic office chairs on trunk kinematics, trunk extensor EMG and spinal shrinkage. Ergonomics 44, 739-50.
15. Michel DP, Helander MG (1994) Effects of two types of chairs on stature change and comfort for individuals with healthy and herniated discs. Ergonomics 37, 1231-44.
16. van Poppel MN, de Looze MP, Koes BW, Smid T, Bouter LM (2000) Mechanisms of action of lumbar supports: a systematic review. Spine 25, 2103-13.
17. Yoo WG, Yi CH, Kim MH (2006) Effects of a proximity-sensing feedback chair on head, shoulder, and trunk postures when working at a visual display terminal. J Occup Rehabil 16, 631-7.
18. Moffet H, Hagberg M, Hansson-Risberg E, Karlqvist L (2002) Influence of laptop computer design and working position on physical exposure variables. Clin Biomech (Bristol, Avon) 17, 368-75.
19. Carcone SM, Keir PJ (2007) Effects of backrest design on biomechanics and comfort during seated work. Appl Ergon 38, 755-64.
20. Leivseth G, Drerup B (1997) Spinal shrinkage during work in a sitting posture compared to work in a standing posture. Clin Biomech (Bristol, Avon) 12, 409-18.
21. McLean L (2005) The effect of postural correction on muscle activation amplitudes recorded from the cervicobrachial region. J Electromyogr Kinesiol 15, 527-35.
22. Lehman GJ, Hoda W, Oliver S (2005) Trunk muscle activity during bridging exercises on and off a Swiss ball. Chiropr Osteopat 13, 14.
23. Black KM, McClure P, Polansky M (1996) The influence of different sitting positions on cervical and lumbar posture. Spine 21, 65-70.
24. Callaghan JP, McGill SM (2001) Low back joint loading and kinematics during standing and unsupported sitting. Ergonomics 44, 280-94.
25. Yoo WG, Yi CH, Kim MH (2007) Effects of a ball-backrest chair on the muscles associated with upper crossed syndrome when working at a VDT. Work 29, 239-44.
26. Raine S, Twomey LT (1997) Head and shoulder posture variations in 160 asymptomatic women and men. Arch Phys Med Rehabil 78, 1215-23.
27. O'Sullivan P, Dankaerts W, Burnett A, Chen D, Booth R, Carlsen C, Schultz A (2006) Evaluation of the flexion relaxation phenomenon of the trunk muscles in sitting. Spine 31, 2009-16.
28. Ekstrom RA, Donatelli RA, Soderberg GL (2003) Surface electromyographic analysis of exercises for the trapezius and serratus anterior muscles. J Orthop Sports Phys Ther 33, 247-58.
29. Szeto GP, Straker LM, O'Sullivan PB (2005) EMG median frequency changes in the neck-shoulder stabilizers of symptomatic office workers when challenged by different physical stressors. J Electromyogr Kinesiol 15, 544-55.
30. Babski-Reeves K, Stanfield J, Hughes L (2005) Assessment of video display workstation set up on risk factors associated with the development of low back and neck discomfort. Int J Ind Ergon 35, 593-604.
31. Gill KP, Bennett SJ, Savelsbergh GJ, van Dieen JH (2007) Regional changes in spine posture at lift onset with changes in lift distance and lift style. Spine 32, 1599-604.
32. Falla D, Jull G, Russell T, Vicenzino B, Hodges P (2007) Effect of neck exercise on sitting posture in patients with chronic neck pain. Phys Ther 87, 408-17.
33. Panjabi MM (1992) The stabilizing system of the spine. Part II. Neutral zone and instability hypothesis. J Spinal Disord 5, 390-6; discussion 397.
34. Hides JA, Jull GA, Richardson CA (2001) Long-term effects of specific stabilizing exercises for first-episode low back pain. Spine 26, E243-8.
35. Arokoski JP, Valta T, Airaksinen O, Kankaanpaa M (2001) Back and abdominal muscle function during stabilization exercises. Arch Phys Med Rehabil 82, 1089-98.
36. Bendix T, Poulsen V, Klausen K, Jensen CV (1996) What does a backrest actually do to the lumbar spine? Ergonomics 39, 533-42.
37. Ainscough-Potts AM, Morrissey MC, Critchley D (2006) The response of the transverse abdominis and internal oblique muscles to different postures. Man Ther 11, 54-60.
38. Vera-Garcia FJ, Grenier SG, McGill SM (2000) Abdominal muscle response during curl-ups on both stable and labile surfaces. Phys Ther 80, 564-9.
39. Vergara M, Page A (2002) Relationship between comfort and back posture and mobility in sitting-posture. Appl Ergon 33, 1-8.
40. O'Sullivan PB, Grahamslaw KM, Kendell M, Lapenskie SC, Moller NE, Richards KV (2002) The effect of different standing and sitting postures on trunk muscle activity in a pain-free population. Spine 27, 1238-44.
41. O'Sullivan PB, Phyty GD, Twomey LT, Allison GT (1997) Evaluation of specific stabilizing exercise in the treatment of chronic low back pain with radiologic diagnosis of spondylolysis or spondylolisthesis. Spine 22, 2959-67.
42. O'Sullivan PB, Mitchell T, Bulich P, Waller R, Holte J (2006) The relationship between posture and back muscle endurance in industrial workers with flexion-related low back pain. Man Ther 11, 264-71.
43. Marshall PW, Murphy BA (2005) Core stability exercises on and off a Swiss ball. Arch Phys Med Rehabil 86, 242-9.
44. McGill SM, Kavcic NS, Harvey E (2006) Sitting on a chair or an exercise ball: various perspectives to guide decision making. Clin Biomech (Bristol, Avon) 21, 353-60.