The influence of body posture, arm movement, and work stress on trapezius activity during computer work

European Journal of Applied Physiology

Volumn 101, Issue 4, 2007, Pages 445-456

  Mork, Paul Jarle ^a   Westgaard, Rolf H ^a  

^a NORWEGIAN UNIVERSITY OF SCIENCE AND TECHNOLOGY   (Norway)

Author keywords

Computer work; Electromyography; Posture; Shoulder and neck pain; Trapezius; Work stress

Indexed keywords

ADULT; ARM MOVEMENT; ARTICLE; BODY POSTURE; CLINICAL ARTICLE; CONTROLLED STUDY; ELECTROMYOGRAPHY; FEMALE; HEART RATE; HUMAN; HUMAN COMPUTER INTERACTION; JOB STRESS; MUSCLE CONTRACTION; OCCUPATIONAL DISEASE; OCCUPATIONAL EXPOSURE; PRIORITY JOURNAL; SITTING; STANDING; STRESS STRAIN RELATIONSHIP; TENSION; TRAPEZIUS MUSCLE; VISUAL ANALOG SCALE; VOLUNTARY MOVEMENT; WALKING; WORKING TIME;

ADULT; ALGORITHMS; ARM; BIOMECHANICS; COMPUTERS; ELECTROCARDIOGRAPHY; ELECTROMYOGRAPHY; FEMALE; FUNCTIONAL LATERALITY; HEART RATE; HUMANS; LEG; MIDDLE AGED; MOVEMENT; MUSCLE TONUS; MUSCLE, SKELETAL; POSTURE; REGRESSION ANALYSIS; STRESS, PSYCHOLOGICAL; WORK;

EID: 34848872546     PISSN: 14396319     EISSN: None     Source Type: Journal    
DOI: 10.1007/s00421-007-0518-4     Document Type: Article

References (48)

1. Blangsted AK, Hansen K, Jensen C (2003) Muscle activity during computer-based office work in relation to self-reported job demands and gender. Eur J Appl Physiol 89:352-358
2. Blangsted AK, Søgaard K, Christensen H, Sjøgaard G (2004) The effect of physical and psychosocial loads on the trapezius muscle activity during computer keying tasks and rest periods. Eur J Appl Physiol 91:253-258
3. Blatter BM, Bongers PM (2002) Duration of computer use and mouse use in relation to musculoskeletal disorders of neck and upper limb. Int J Ind Ergon 30:295-306
4. Byström JU, Hansson G-Å. Rylander L. Ohlsson K. Källrot G, Skerfving S (2002) Physical workload on neck and upper limb using two CAD applications. Appl Ergon 33:63-74
5. Carter JB, Banister EW (1994) Musculoskeletal problems in VDT work: A review. Ergonomics 37:1623-1648
6. Eriksen W (2004) Linking work factors to neck myalgia: The nitric oxide/ oxygen ratio hypothesis. Med Hypotheses 62:721-726
7. Ferreira M, de Souza Conceicão GM, Saldiva PHN (1997) Work organization is significantly associated with upper extremities musculoskeletal disorders among employees engaged in interactive computer-telephone tasks of an international bank subsidiary in Sa7tild;o Paulo, Brazil. Am J Ind Med 31:468-473
8. Galinsky TL, Swanson NG, Sauter SL, Hurrell JJ, Schleifer LM (2000) A field study of supplementary rest breaks for data-entry operators. Ergonomics 43:622-638
9. Hagen KB, Sørhagen O, Harms-Ringdahl K (1995) Influence of weight and frequency on thigh and lower-trunk motion during repetitive lifting employing stoop and squat techniques. Clin Biomech 10:122-127
10. Holte KA, Vasseljen O, Westgaard RH (2003) Exploring perceived tension as a response to psychosocial work stress. Scand J Work Environ Health 29:124-133
11. Holte KA, Westgaard RH (2002a) Further studies of shoulder and neck pain and exposures in customer service work with low biomechanical demands. Ergonomics 45:887-909
12. Holte KA, Westgaard RH (2002b) Daytime trapezius muscle activity and shoulder-neck pain of service workers with work stress and low biomechanical exposure. Am J Ind Med 41:393-405
13. Hubbard DR, Berkoff GM (1993) Myofascial trigger points show spontaneous needle EMG activity. Spine 18:1803-1807
14. Jensen C, Borg V, Finsen L, Hansen K, Juul-Kristensen B (1998) Job demands, muscle activity and musculoskeletal symptoms in relation to work with the computer mouse. Scand J Work Environ Health 24:418-424
15. Jensen C, Finsen L, Søgaard K, Christensen H (2002) Musculoskeletal symptoms and duration of computer and mouse use. Int J Ind Ergon 30:265-275
16. Jensen C, Vasseljen O, Westgaard RH (1993) The influence of electrode position on bipolar surface electromyogram recordings of the upper trapezius muscle. Eur J Appl Physiol 67:266-273
17. Jonsson B (1978) Kinesiology. With special reference to electromyographic kinesiology. In: Cobb WA, Van Duijn H (eds) Contemporary clinical neurophysiology (EEG Suppl. No. 34). Elsevier, Amsterdam, pp 417-428
18. Juul-Kristensen B, Søgaard K, Strøyer J, Jensen C (2004) Computer users' risk factors for developing shoulder, elbow and back symptoms. Scand J Work Environ Health 30:390-398
19. Kern DS, Semmler JG, Enoka RM (2001) Long-term activity in upper- and lower-limb muscles of humans. J Appl Physiol 91:2224-2232
20. Knardahl S (2002) Psychophysiological mechanisms of pain in computer work: The blood vessel-nociceptor interaction hypothesis. Work Stress 16:179-189
21. Larsman P, Sandsjö L, Klipstein A, Vollenbroek-Hutten M, Christensen H (2006) Perceived work demands, felt stress, and musculoskeletal neck/shoulder symptoms among elderly female computer users. The NEW study. Eur J Appl Physiol 96:127-135
22. Lundberg U, Forsman M, Zachau G, Eklöf M, Palmerud G, Melin B, Kadefors R (2002) Effects of experimentally induced mental and physical stress on motor unit recruitment in the trapezius muscle. Work Stress 16:166-178
23. Marcus M, Gerr F, Monteilh C, Ortiz DJ, Gentry E, Cohen S, Edwards A, Ensor C, Kleinbaum D (2002) A prospective study of computer users: II. Postural risk factors for musculoskeletal symptoms and disorders. Am J Ind Med 41:236-249
24. Mathiassen SE, Winkel J (1990) Electromyographic activity in the shoulder-neck region according to arm position and glenohumeral torque. Eur J Appl Physiol 61:370-379
25. McNulty WH, Gevirtz RN, Hubbard DR, Berkoff GM (1994) Needle electromyographic evaluation of trigger point response to a psychological stressor. Psychophysiology 31:313-316
26. Melin B, Lundberg U (1997) A biopsychosocial approach to work-stress and musculoskeletal disorders. J Psychophysiol 11:238-247
27. Mork PJ, Westgaard RH (2004) The association between nocturnal trapezius muscle activity and shoulder and neck pain. Eur J Appl Physiol 92:18-25
28. Mork PJ, Westgaard RH (2005) Long-term electromyographic activity in upper trapezius and low back muscles of females with moderate physical activity. J Appl Physiol 99:570-578
29. Mork PJ, Westgaard RH (2006) Low-amplitude trapezius activity in work and leisure and the relation to shoulder and neck pain. J Appl Physiol 100:1142-1149
30. Nakazawa T, Okubo Y, Suwazono Y, Kobayashi E, Komine S, Kato N, Nogawa K (2002) Association between duration of daily VDT use and subjective symptoms. Am J Ind Med 42:421-426
31. Nordstrom MA, Miles TS (1991) Instability of motor unit firing rates during prolonged isometric contractions in human masseter. Brain Res 549:268-274
32. Norman K, Nilsson T, Hagberg M, Wigaeus Tornqvist E, Toomingas A (2004) Working conditions and health among female and male employees at a call center in Sweden. Am J Ind Med 46:55-62
33. Romaiguère P, Vedel J-P, Pagni S (1993) Comparison of fluctuations of motor unit recruitment and de-recruitment thresholds in man. Exp Brain Res 95:517-522
34. Saltin B, Gollnick PD (1983) Skeletal muscle adaptability: Significance for metabolism and performance. In: Peachey LD, Adrian RH, Geiger SR (eds) Handbook of physiology. American Physiological Society, Bethesda, MD, pp 555-631
35. Simons DG (2004) Review of enigmatic MTrPs as a common cause of enigmatic musculoskeletal pain and dysfunction. J Electromyogr Kinesiol 14:95-107
36. Sjøgaard G, Lundberg U, Kadefors R (2000) The role of muscle activity and mental load in the development of pain and degenerative processes at the muscle cell level during computer work. Eur J Appl Physiol 83:99-105
37. Thorn S, Forsman M, Zhang Q, Taoda K (2002) Low-threshold motor unit activity during a 1-h static contraction in the trapezius muscle. Int J Ind Ergon 30:225-236
38. Vasseljen O, Westgaard RH (1997) Arm and trunk posture during work in relation to shoulder and neck pain and trapezius activity. Clin Biomech 12:22-31
39. Veiersted KB, Westgaard RH (1994) Subjectively assessed occupational and individual parameters as risk factors for trapezius myalgia. Int J Ind Ergon 13:235-245
40. Veiersted KB, Westgaard RH, Andersen P (1990) Pattern of muscle activity during sterotyped work and its relation to muscle pain. Int Arch Occup Environ Health 62:31-41
41. Wærsted M, Bjørklund RA, Westgaard RH (1994) The effect of motivation on shoulder-muscle tension in attention-demanding tasks. Ergonomics 37:363-376
42. Wærsted M, Eken T, Westgaard RH (1996) Activity of single motor units in attention-demanding tasks: Firing pattern in the human trapezius muscle. Eur J Appl Physiol 72:323-329
43. Wahlström J, Hagberg M, Johnson PW, Svensson J, Rempel D (2002) Influence of time pressure and verbal provocation on physiological and psychological reactions during work with a computer mouse. Eur J Appl Physiol 87:257-263
44. Wahlström J, Hagberg M, Toomingas A, Wigaeus Tornqvist E (2004) Perceived muscular tension, job strain, physical exposure, and associations with neck pain among VDU users; a prospective cohort study. Occup Environ Med 61:523-528
45. Westad C, Mork PJ, Westgaard RH (2004) Firing patterns of low-threshold trapezius motor units in feedback-controlled contractions and vocational motor activities. Exp Brain Res 158:465-473
46. Westad C, Westgaard RH, De Luca CJ (2003) Motor unit recruitment and derecruitment induced by brief increase in contraction amplitude of the human trapezius muscle. J Physiol 552:645-656
47. Westad C, Westgaard RH (2005) The influence of contraction amplitude and firing history on spike-triggered averaged trapezius motor unit potentials. J Physiol 562:965-975
48. Westgaard RH, Jansen T (1992) Individual and work related factors associated with symptoms of musculoskeletal complaints. I A quantitative registration system. Br J Ind Med 49:147-153