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Postural and Muscular Responses While Viewing Different Heights of Screen.

This study aimed to examine the effects of visual display terminal (VDT) viewing angle on human postural angle and muscular activity. The participants' neck, thoracic bending, and trunk inclination angles; and the activity of sternocleidomastoid, trapezius, splenius capitis, and erector spinae at 5...

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Published in:International Journal of Occupational Safety & Ergonomics Vol. 19; no. 2; pp. 251 - 259
Main Authors: Tzu-Hsien Lee, Tsung-Yu Liu
Format: pictorial research tables/charts Journal Article
Published: Taylor & Francis Ltd 2013
Online Access:View this record in EBSCOhost
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        10803548
        39QK
      jtl: International Journal of Occupational Safety & Ergonomics
      issn: 10803548
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      dt: 2013
      vid: 19
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      pub: Taylor & Francis Ltd
      place: Philadelphia, Pennsylvania
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        10.1080/10803548.2013.11076982
        91566043
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      tig:
        atl: Postural and Muscular Responses While Viewing Different Heights of Screen.
      aug:
        au:
          Tzu-Hsien Lee
          Tsung-Yu Liu
        affil: Department of Management and Information Technology, Southern Taiwan University of Science and Technology, Tainan, Taiwan
      sug:
        subj:
          Occupational Health
          Computer Terminals
          User-Computer Interface
          Posture
          Visual Perception
          Musculoskeletal Diseases Risk Factors
          Ergonomics
          Human
          Male
          Videorecording
          Electromyography
          Analysis of Variance
          Descriptive Statistics
          Trapezius Muscles
          Erector Spinae Muscles
          Male
      ab: This study aimed to examine the effects of visual display terminal (VDT) viewing angle on human postural angle and muscular activity. The participants' neck, thoracic bending, and trunk inclination angles; and the activity of sternocleidomastoid, trapezius, splenius capitis, and erector spinae at 5 viewing angles (+40º, +20º, 0º, -20º, and -40º) of a VDT screen were collected for 1 min. This study showed that neck and thoracic bending angles increased with viewing angle, while viewing angle did not significantly affect trunk inclination angle. In addition, the activity of trapezius and erector spinae increased when viewing a higher or lower VDT screen height compared with viewing a horizontal VDT screen height; however, the activity of splenius capitis decreased with viewing angle.
      pubtype: Academic Journal
      doctype:
        pictorial
        research
        tables/charts
        Journal Article
      ougenre: Article
    language: English
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