Two studies were designed to explore visual and musculoskeletal strain associated with computer monitor placement. Effects of viewing angle, monitor size, keyboard familiarity, and task were studied in a lab setting. Outcome measures assessed visual and musculoskeletal strain, preference, and performance. To follow-up, participants in a field study were exposed to two of the placements tested in the lab. Preferences were split, but for most field subjects matched the placement associated with the least neck discomfort. Results of these studies and others suggest that, in consideration of individual differences and task requirements, the best solution may be providing users with a range of placement options and the ability and training to explore them.
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References
1.
AnkrumD. R.NemethK. J. (1995). Posture, comfort, and monitor placement. Ergonomics in Design, 7–9.
2.
ANSI/HFS (1988). American National Standard for Human Factors Engineering of Visual Display Terminal Workstations (ANSI/HFS Standard No. 100-1988). American National Standards Institute (ANSI) and The Human Factors Society, Inc.
3.
BauerW.WittigT. (1998). Influence of screen and copy holder positions on head posture, muscle activity and user judgement. Applied Ergonomics, 29, 185–192.
4.
BergqvistU.WolgastE.NilssonB.VossM. (1995). Musculoskeletal disorders among visual display terminal workers: individual, ergonomic, and work organizational factors. Ergonomics, 38, 763–776.
5.
BergqvistU. O.KnaveB. G. (1994). Eye discomfort and work with visual display terminals. Scandinavian Journal of Work, Environment, and Health, 20, 27–33.
6.
Burgess-LimerickR.PlooyA.AnkrumD. R. (1998). The effect of imposed and self-selected computer monitor height on posture and gaze angle. Clinical Biomechanics, 13, 584–592.
7.
CaillietR. (1991). Neck and Arm Pain(3rd ed.). Philadelphia: FA Davis Company.
8.
ChaffinD. B. (1973). Localized muscle fatigue-definition and measurement. Journal of Occupational Medicine15, 346–354.
9.
de WallM.van RielM. P. J. M.AghinaJ. C. F. M.BurdorfA.SnijdersC. J. (1992). Improving the sitting posture of CAD/CAM workers by increasing VDU monitor working height. Ergonomics, 35, 427–436.
10.
GrandjeanE.HüntingW.PidermannM. (1983). VDT workstation design: preferred settings and their effects. Human Factors, 25, 161–175.
11.
GrayF. E.HansonJ. A.JonesF. P. (1966). Postural aspects of neck muscle tension. Ergonomics, 9, 245–256.
12.
GriecoA.MolteniG.PiccoliB.PerrisR. (1982). Field study in newspaper printing: a systematic approach to VDU operator strain. In GrandjeanE.ViglianiE. (Eds.), Ergonomic Aspects of Visual Display Terminals (pp. 185–194. London: Taylor & Francis.
13.
HagbergM.SilversteinB.WellsR.SmithM. J.HendrickH. W.CarayonP.PerusseM. (1995). Work Related Musculoskeletal Disorders (WMSDs): A Reference Book for Prevention. London: Taylor & Francis.
14.
HillS. G.KroemerK. H. E. (1986). Preferred declination of the line of sight. Human Factors, 28, 127–134.
15.
ISO (1992). Ergonomic requirements for office work with visual display terminals (VDTs) - Workplace requirements (ISO 9241-3). International Standards Organization.
16.
JaschinskiW.HeuerH.KylianH. (1998). Preferred position of visual displays relative to the eyes: a field study of visual strain and individual differences. Ergonomics, 41, 1034–1049.
17.
KendallF. P.McCrearyE. K. (1983). Muscles, testing and function (3rd ed.). Baltimore: Waverly Press, Inc.
18.
KilbomÅ.PerssonJ. (1987), Work technique and its consequences for musculoskeletal disorders. Ergonomics, 30, 273–279.
19.
LieI.FostervoldK. I. (1994). VDT-work with different gaze inclinations. In Proceedings of the WWDU (pp. D40–D42).
20.
LuH.AghazadehF. (1993). VDT positions: effect on performance and comfort. In Proceedings of the Human Factors and Ergonomics Society 37th Annual Meeting (pp. 397–400). Santa Monica, CA: Human Factors and Ergonomics Society.
21.
LundervoldA. (1958). Electromyographic investigations during typewriting. Ergonomics, 1, 226–233.
22.
Mon-WilliamsM.Burgess-LimerickR.PlooyA.WannJ. (1999). Vertical gaze direction and postural adjustment: an extension of the Heuer model. Journal of Experimental Psychology: Applied, 5, 35–53.
23.
RaineS.TwomeyL. T. (1997). Head and shoulder posture variations in 160 asymptomatic women and men. Archives of Physical Medicine and Rehabilitation, 78, 1215–1223.
24.
SchmidtR. A. (1991). Motor Learning & Performance: From Principles to Practice. Champaign, IL: Human Kinetics Publishers, Inc.
25.
TurvilleK. L.PsihogiosJ. P.UlmerT. R.MirkaG. A. (1998). The effects of video display terminal height on the operator: a comparison of the 15 degree and 40 degree recommendations. Applied Ergonomics, 29, 239–246.
26.
VillanuevaM. B.SotoyamaM.JonaiH.TakeuchiY.SaitoS. (1996). Adjustments of posture and viewing parameters of the eye to changes in the screen height of the visual display terminal. Ergonomics, 39, 933–945.
27.
WatsonD. H.TrottP. H. (1993). Cervical headache: an investigation of natural head posture and upper cervical flexor muscle performance. Cephalgia, 13, 272–284.
