Influence of virtual keyboard design and usage posture on typing performance and muscle activity during tablet interaction.
This study aimed to determine the effects of virtual keyboard designs and postures on task performance and muscle activity during tablet use. Eighteen healthy adults were randomly assigned to one of three postures (DESK, LAP, BED) to complete six sessions of 60-minute typing on a tablet with three v...
| Publicado en: | Ergonomics Vol. 63; no. 10; pp. 1312 - 1329 |
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| Autores principales: | , , |
| Formato: | pictorial research tables/charts randomized controlled trial Journal Article |
| Publicado: |
Taylor & Francis Ltd
Oct2020
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=146116667&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 146116667 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00140139 ERO jtl: Ergonomics issn: 00140139 maglogo: Y pubinfo: dt: Oct2020 vid: 63 iid: 10 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 146116667 145575690 146116667 146116667 10.1080/00140139.2020.1778097 146116667 ppf: 1312 ppct: 17 formats: tig: atl: Influence of virtual keyboard design and usage posture on typing performance and muscle activity during tablet interaction. aug: au: Lin, Ming-I Brandon Hong, Ruei-Hong Huang, Yu-Ping affil: Department of Industrial and Information Management, National Cheng-Kung University, Tainan, Taiwan sug: subj: Keyboards Computers, Portable Equipment Design Posture Ergonomics Task Performance and Analysis Human Randomized Controlled Trials Random Assignment Adult Electromyography Methods Forearm Muscles Computers and Computerization Adult: 19-44 years ab: This study aimed to determine the effects of virtual keyboard designs and postures on task performance and muscle activity during tablet use. Eighteen healthy adults were randomly assigned to one of three postures (DESK, LAP, BED) to complete six sessions of 60-minute typing on a tablet with three virtual keyboards (STD, WIDE, SPLIT) twice in an experimental laboratory. Keystroke dynamics and muscle activity of the forearm and neck-shoulder regions were measured by electromyography. The split virtual keyboard was found to be associated with faster typing speed (SPLIT vs STD, p =.015; SPLIT vs WIDE, p <.001) and decreased muscle activity of extensor digitorum communis (SPLIT vs STD, p =.021). Lap posture was associated with faster typing speed (p =.018) and higher forearm muscle activity (p <.05). Typing performance decreased (p <.001) with elevated neck extensor muscle activity (p =.042) when the task duration prolonged. The split virtual keyboard showed potential to improve tablet ergonomics under various postures. Practitioner Summary: Tablets have become widely used for a variety of tasks and have gradually expanded into the realm of mobile productivity and education. Adequate designs of virtual keyboards for tablets show the potential for increased task performance and decreased muscle activity pertinent to typing activity and posture constraints imposed by non-traditional work positions. Abbreviations: WPM: words per minute; IKI: inter-key press interval; EMG: electromyography; EDC: extensor digitorum communis; FDS: flexor digitorum superficialis; CES: cervical erector spinae; UT: upper trapezius; EA: electrical activity; MVC: maximum voluntary contraction; APDF: amplitude probability distribution function pubtype: Academic Journal doctype: pictorial research tables/charts randomized controlled trial Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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