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KMID : 0357220010130030829
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Journal of Korean Society Physical Therapy
2001 Volume.13 No. 3 p.829 ~ p.837
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Comparison of Electromyographic Activities in the Neck Region According to the Screen Height and Document Holder Position
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Abstract
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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 electromyography 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 analyze the effects of the two factors.
As a result, changing the screen height and document holder position has no effect on electromyography activities in the neck region.
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KEYWORD
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