The Journal of Korean Physical Therapy

The Korean Society of Physical Therapy (대한물리치료학회)
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Comparison of Electromyographic Activities in the Neck Region According to the Screen Height and Document Holder Position

스크린 높이와 서류 고정대 위치에 따른 경부 주위 근육의 활성 정도 비교

  • Kwon, Hyuk-Cheol (Dept. of Rehabilitation Technology, College of Rehabilitation Science , Taegu University) ;
  • Jeong, Dong-Hoon (Dept. of Rehabilitation Science, The Graduate School, Taegu University)
  • 권혁철 (대구대학교 재활과학대학 재활과학과) ;
  • 정동훈 (대구대학교 대학원 재활과학대학 재활공학)
  • Published : 2001.12.21
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Abstract

Using Video Display Terminals(VDT) in the working environment often causes health complaints in the neck and shoulder region. This study was conducted on ten subjects, in order to investigate the change of electromyographic activities in the neck region(sternocleidomastoid muscle, upper trapezius muscle and erector muscle of cervical spine)with regards to the screen height and document holder position. A total of six different conditions of screen height and document holder position were measured during subjects performed a text-entry task for a duration of 10min. The raw EMG signal was transmuted into the root mean square(RMS). Two-way ANOVA for repeated measures was used to analyse the effects of the two factors. As a result, changing the screen height and document holder position has no effect on electromyographic activities in the neck region.

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