Physical exposure differences between children and adults when using standard and small computer input devices.
By the age of five years, 75% of the children in the USA are using computers and at this age they are only one-half to two-thirds the size of and about one-fifth as strong as their adult counterparts. Fourteen children between five and eight years of age and their same-gender biological parents (giv...
| Publicado en: | Ergonomics Vol. 51; no. 6; pp. 872 - 890 |
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| Autores principales: | , , , |
| Formato: | pictorial research tables/charts Journal Article |
| Publicado: |
Taylor & Francis Ltd
Jun2008
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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=105798759&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105798759 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00140139 ERO jtl: Ergonomics issn: 00140139 maglogo: Y pubinfo: dt: Jun2008 vid: 51 iid: 6 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 105798759 105798759 2009933115 10.1080/00140130701797959 NLM18484401 105798759 ppf: 872 ppct: 18 formats: tig: atl: Physical exposure differences between children and adults when using standard and small computer input devices. aug: au: Blackstone JM Karr C Camp J Johnson PW affil: Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA. sug: subj: Age Factors Body Weights and Measures Equipment Design Ergonomics User-Computer Interface Adult Analysis of Variance Child Child, Preschool Comparative Studies Data Analysis Software Descriptive Statistics Electromyography Female Funding Source Goniometry Methods Male Mouse (Computer) Utilization Pearson's Correlation Coefficient Posture Evaluation Repeated Measures Washington Word Processing Human Adult: 19-44 years Child: 6-12 years Child, Preschool: 2-5 years Female Male ab: By the age of five years, 75% of the children in the USA are using computers and at this age they are only one-half to two-thirds the size of and about one-fifth as strong as their adult counterparts. Fourteen children between five and eight years of age and their same-gender biological parents (giving a total of 28 subjects) were evaluated using both a standard and a smaller, child-proportional input device during standardised mouse and keyboard tasks. Typing and computer mouse performance were measured with tracking software, wrist posture was measured with an electrogoniometer and electromyography was used to measure finger flexor and extensor muscle activity in the right arm. With the small mouse, both children and adults performed the mouse task significantly faster and made significantly fewer errors. When using the standard-sized mouse and keyboard, children worked with significantly greater ulnar deviation and significantly less extension than their adult counterparts. When children used the smaller mouse, finger flexor muscle activity, finger extensor muscle activity and ulnar deviation significantly decreased, with little change in wrist extension compared to the standard mouse. No significant differences were observed between the standard and small keyboards for children or their parents. Compared to their adult counterparts, children had to apply twice the relative force, as a percentage of their maximum capacity, to activate the buttons and keys on the input devices. These measured differences may have application in the design of computer input devices for children. pubtype: Academic Journal doctype: pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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