Effects of using a document holder when typing on head excursion and neck muscle activity among computer users with and without neck pain

References

• Communications and multimedia pocket book of statistics Q2 2015 [Internet]. Kuala Lumpur: Malaysian Communications and Multimedia Commission; 2015 [cited 2018 Jan 19]. Available from: http://skmm.optima.net.my/skmmgovmy/media/General/pdf/CM-Q2-2015-BI-(pdf).pdf
   Google Scholar
• Mahmud N, Bahari SF, Zainudin NF. Psychosocial and ergonomics risk factors related to neck, shoulder and back complaints among Malaysia office workers. Computer. 2014;1:0–97.
   Google Scholar
• Ardahan M, Simsek H. Analyzing musculoskeletal system discomforts and risk factors in computer-using office workers. Pakistan J Med Sci. 2016;32(6):1425–1429.
   PubMed Web of Science ®Google Scholar
• Zakerian SA, Subramaniam ID. The relationship between psychosocial work factors, work stress and computer-related musculoskeletal discomforts among computer users in Malaysia. Int J Occup Saf Ergon. 2009;15:425–434. doi:doi: 10.1080/10803548.2009.11076822
   PubMed Web of Science ®Google Scholar
• Barbe MF, Barr AE. Inflammation and the pathophysiology of work-related musculoskeletal disorders. Brain Behav Immun. 2006;20(5):423–429. doi:doi: 10.1016/j.bbi.2006.03.001
   PubMed Web of Science ®Google Scholar
• Ming Z, Närhi M, Siivola J. Neck and shoulder pain related to computer use. Pathophysiology. 2004;11(1):51–56. doi:doi: 10.1016/j.pathophys.2004.03.001
   PubMedGoogle Scholar
• Leonard JH, Kok KS, Ayiesha R, et al. Prolonged writing task: comparison of electromyographic analysis of upper trapezius muscle in subjects with or without neck pain. Clin Ter. 2010;161(1):29–33.
   PubMed Web of Science ®Google Scholar
• Cagnie B, Danneels L, Van Tiggelen D, et al. Individual and work related risk factors for neck pain among office workers: a cross sectional study. Eur Spine J. 2007;16(5):679–686. doi:doi: 10.1007/s00586-006-0269-7
   PubMed Web of Science ®Google Scholar
• Leonard JH, Choo CP, Manaf MRA, et al. Development and evaluation of ‘neck pain and functional limitation scale’: a validation study in the Asian context. Indian J Med Sci. 2009;63(10):445–454. doi:doi: 10.4103/0019-5359.57645
   PubMedGoogle Scholar
• Eltayeb S, Staal JB, Kennes J, et al. Prevalence of complaints of arm, neck and shoulder among computer office workers and psychometric evaluation of a risk factor questionnaire. BMC Musculoskelet Disord. 2007;8(1):68. doi: 10.1186/1471-2474-8-68
   PubMed Web of Science ®Google Scholar
• Falla D, Farina D. Muscle fiber conduction velocity of the upper trapezius muscle during dynamic contraction of the upper limb in patients with chronic neck pain. Pain. 2005;116(1–2):138–145. doi:doi: 10.1016/j.pain.2005.03.038
   PubMed Web of Science ®Google Scholar
• Goostrey S, Treleaven J, Johnston V. Evaluation of document location during computer use in terms of neck muscle activity and neck movement. Appl Ergon. 2014;45(3):767–772. doi:doi: 10.1016/j.apergo.2013.10.007
   PubMed Web of Science ®Google Scholar
• Ariëns GAM, Bongers PM, Douwes M, et al. Are neck flexion, neck rotation, and sitting at work risk factors for neck pain? Results of a prospective cohort study. Occup Environ Med. 2001;58(3):200–207. doi: 10.1136/oem.58.3.200
   PubMed Web of Science ®Google Scholar
• Bauer W, Wittig T. Influence of screen and copy holder positions on head posture, muscle activity and user judgement. Appl Ergon. 1998;29(3):185–192. doi: 10.1016/S0003-6870(97)00060-4
   PubMed Web of Science ®Google Scholar
• Szeto GPY, Straker LM, O’Sullivan PB. A comparison of symptomatic and asymptomatic office workers performing monotonous keyboard work – 2: neck and shoulder kinematics. Man Ther. 2005;10(4):281–291. doi:doi: 10.1016/j.math.2005.01.005
   PubMed Web of Science ®Google Scholar
• Szeto GPY, Sham KSW. The effects of angled positions of computer display screen on muscle activities of the neck–shoulder stabilizers. Int J Ind Ergon. 2008;38(1):9–17. doi:doi: 10.1016/j.ergon.2007.07.014
   Web of Science ®Google Scholar
• Human Department of Occupational Safety and HMO. Guidelines on occupational safety and health for working with video display units (VDU’s) [Internet]. [cited 2018 Jan 19]. Available from: http://www.dosh.gov.my/index.php/en/competent-person-form/occupational-health/guidelines/ergonomic/605-03-guidelines-on-occupational-safety-and-health-for-working-with-video-display-unit-vdu-s-2003/file
   Google Scholar
• Department of Occupational Safety and Health (DOSH). Guidelines on occupational safety and health for working with video disply units (VDU's). Putrajaya: DOSH; 2003. Available from: http://www.dosh.gov.my/index.php/ms/perundangan/garispanduan/ergonomik/683-03-garis-panduan-bagi-keselamatan-dan-kesihatan-pekerjaan-bagi-pekerjaan-yang-melibatkan-unit-paparan-video-vdu-2003/file
   Google Scholar
• Bernmark E, Forsman M, Wiktorin C. Head movements during two computer work tasks assessed by accelerometry. Appl Ergon. 2011;42(2):309–313. doi: 10.1016/j.apergo.2010.07.006
   PubMed Web of Science ®Google Scholar
• Aaras A, Fostervold KI, Ro O. Postural load during VDU work: a comparison between various work postures. Occup Health Ind Med. 1998;2(38):86. doi:10.1080/001401397187496
   Google Scholar
• Chaffin DB, Andersson G, Martin BJ. Occupational biomechanics. 4th ed. New York (NY): Wiley; 2006.
   Google Scholar
• Edmondston SJ, Chan HY, Chi Wing Ngai G, et al. Postural neck pain: an investigation of habitual sitting posture, perception of ‘good’ posture and cervicothoracic kinaesthesia. Man Ther. 2007;12(4):363–371. doi: 10.1016/j.math.2006.07.007
   PubMed Web of Science ®Google Scholar
• Jensen C, Nilsen K, Hansen K, et al. Trapezius muscle load as a risk indicator for occupational shoulder–neck complaints. Int Arch Occup Environ Health. 1993;64(6):415–423. doi:doi: 10.1007/BF00517947
   PubMed Web of Science ®Google Scholar
• Nordander C, Hansson G-Å, Rylander L, et al. Muscular rest and gap frequency as EMG measures of physical exposure: the impact of work tasks and individual related factors. Ergonomics. 2000;43(11):1904–1919. doi: 10.1080/00140130050174536
   PubMed Web of Science ®Google Scholar
• Hermens HJ, Freriks B, Merletti R, et al. European recommendations for surface electromyography. Roessingh Res Dev. 1999;8(2):13–54.
   Google Scholar
• Røe C, Bjørklund RA, Knardahl S, et al. Cognitive performance and muscle activation in workers with chronic shoulder myalgia. Ergonomics. 2001;44(1):1–16. doi: 10.1080/00140130116821
   PubMed Web of Science ®Google Scholar
• Hägg GM, Åström A. Load pattern and pressure pain threshold in the upper trapezius muscle and psychosocial factors in medical secretaries with and without shoulder/neck disorders. Int Arch Occup Environ Health. 1997;69(6):423–432. doi:doi: 10.1007/s004200050170
   PubMed Web of Science ®Google Scholar
• Westgaard RH, Vasseljen O, Holte KA. Trapezius muscle activity as a risk indicator for shoulder and neck pain in female service workers with low biomechanical exposure. Ergonomics. 2001;44(3):339–353. doi: 10.1080/00140130119649
   PubMed Web of Science ®Google Scholar
• Åkesson I, Hansson G-Å, Balogh I, et al. Quantifying work load in neck, shoulders and wrists in female dentists. Int Arch Occup Environ Health. 1997;69(6):461–474. doi:doi: 10.1007/s004200050175
   PubMed Web of Science ®Google Scholar
• Bergmark A. Stability of the lumbar spine. Acta Orthop. 1989;60(s230):1–54.
   Google Scholar
• Sommerich CM, Joines SMB, Hermans V, et al. Use of surface electromyography to estimate neck muscle activity. J Electromyogr Kinesiol. 2000;10(6):377–398. doi:doi: 10.1016/S1050-6411(00)00033-X
   PubMed Web of Science ®Google Scholar
• Winkel J, Westgaard R. Occupational and individual risk factors for shoulder–neck complaints: part II – the scientific basis (literature review) for the guide. Int J Ind Ergon. 1992;10(1–2):85–104. doi: 10.1016/0169-8141(92)90051-Z
   Google Scholar
• Cooper A, Straker L. Mouse versus keyboard use: a comparison of shoulder muscle load. Int J Ind Ergon. 1998;22(4–5):351–357. doi:doi: 10.1016/S0169-8141(97)00088-7
   Web of Science ®Google Scholar
• Hansson Ga, Asterland P, Holmer NG, et al. Validity and reliability of triaxial accelerometers for inclinometry in posture analysis. Med Biol Eng Comput. 2001;39(4):405–413. doi:doi: 10.1007/BF02345361
   PubMed Web of Science ®Google Scholar
• Kibler WB. Role of the scapula in the overhead throwing motion. Contemp Orthop. 1991;22(5):525–532.
   Google Scholar
• Straker L, Mekhora K. An evaluation of visual display unit placement by electromyography, posture, discomfort and preference. Int J Ind Ergon. 2000;26(3):389–398. doi:doi: 10.1016/S0169-8141(00)00014-7
   Web of Science ®Google Scholar
• Ludewig PM, Cook TM. Alterations in shoulder kinematics and associated muscle activity in people with symptoms of shoulder impingement. Phys Ther. 2000;80(3):276–291.
   PubMed Web of Science ®Google Scholar
• Szeto GPY, Straker LM, O’Sullivan PB. A comparison of symptomatic and asymptomatic office workers performing monotonous keyboard work – 1: neck and shoulder muscle recruitment patterns. Man Ther. 2005;10(4):281–291. doi:doi: 10.1016/j.math.2005.01.005
   PubMed Web of Science ®Google Scholar