Proceedings of the Human Factors and Ergonomics Society Annual Meeting · 2000 · 53 citations · 14 references
ComputingComputer ScienceErgonomicsHuman-computer InteractionMovement AnalysisBody OrientationHead AssessmentNeck AnatomyNeck AssessmentPositional TestingPostureHead Extension PositioningHead PostureHead Posture AnalysisHead Tilt PostureHead-neck PostureNeck Extension PostureNeck Flexion PostureNeck Posture Assessment
In a study of “comfortable” head/neck posture in the absence of a visual target for 24 seated subjects, mean head tilt (Ear-Eye Line) angle was 7.7° above horizontal, and mean head/neck posture (C7-tragus against vertical) was 43.7°. Using these and other studies' findings as reference points for “neutral,” studies examining posture at different computer monitor heights were reviewed: eye-level monitors resulted in head/neck extension.
14
Investigative Ophthalmology and Visual Science
Cathy Frey · 2010 · 3.4K citations
Journal of Occupational Medicine
L. G. Norman · Occupational and Environmental Medicine · 1959 · 2.3K citations · Full text
Localized muscle fatigue--definiton and measurement.
Don B. Chaffin · PubMed · 1973 · 332 citations