An investigation of children's posture and discomfort during computer use
ABSTRACT This study investigated schoolchildren's posture and discomfort while working at computers. Sixty-eight children (mean age 9.5 years) were observed at school during normal computer sessions lasting 15-25 min. Rapid upper limb assessment (RULA) was used to evaluate posture, and a body discomfort chart (BDC) and a modified visual analogue scale (VAS) were used to record site and intensity of discomfort. Computer tasks were noted and in accordance with RULA, postures were classified as Action Level (AL) 1 (acceptable) to 4 (needs immediate change). Most children adopted postures at an unacceptable level while working at computers. None of the postures were in AL 1; 60% were in AL 2; 38% were in AL 3; and 2% were in AL 4. Posture became worse over time. Poor posture was associated with discomfort, but it is not clear if it was related to the sitting posture or to the computer use. Children who reported discomfort had a higher mean RULA grand score (5.0) than those who did not report discomfort (4.4). The type of computer task influenced the children's posture. RULA proved generally to be a suitable method for evaluating children's posture.
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ABSTRACT: School furniture was known to be among main contributor of students' back pain and bad postures. However, most studies focused only on the furniture in classroom compared to other facilities in school. Therefore, this study took the initiative to assess students' working postures in school workshop. The objective of this study was to evaluate postural stress of students using RULA method in CATIA. Actual working process was recorded and tasks performed were translated into human model for ergonomic analysis. This evaluation was done in CAD environment via Human Activity Analysis. Result showed the male students have a higher average RULA score compared to the female students. This study discovered that the current workstation was unsuitable for both genders. Both genders have an average scores of more than 5, which indicated changes are required soon. This paper also presented a recommended design of a workstation to reduce musculoskeletal disorder (MSD) symptom and contribute to total back pain prevention for growing adolescents.12/2013; 10:8. DOI:10.4028/www.scientific.net/AEF.10.199
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ABSTRACT: This study investigated the effect of a school-based ergonomic intervention on childrens’ posture and discomfort while using computers using a pre/post test study design. The sample comprised 23 children age 9 and 10 years. Posture was assessed with Rapid Upper Limb Assessment (RULA) and a workstation assessment was completed using a Visual Display Unit (VDU) checklist. Self reported discomfort was also recorded at the beginning and end of the computer class. Following an ergonomic intervention that included education of the children and workstation changes, the outcome measures were repeated. There was a positive response to the intervention with significant changes between the pre-intervention and post-intervention scores for posture (p = 0.00) and workstation (p = 0.00). The change in discomfort scores from beginning to end of the computer class between the pre-intervention class and the post-intervention class was also significant (p = 0.00). The study highlights the need for continuing concern about the physical effects of children’s computer use and the implications of school-based interventions.Computers & Education 08/2010; 55(1-55):276-284. DOI:10.1016/j.compedu.2010.01.013 · 2.63 Impact Factor
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ABSTRACT: Computer use by children is common and there is concern over the potential impact of this exposure on child physical development. Recently principles for child-specific evidence-based guidelines for wise use of computers have been published and these included one concerning the facilitation of appropriate physical development. This paper reviews the evidence and presents detailed guidelines for this principle. The guidelines include encouraging a mix of sedentary and whole body movement tasks, encouraging reasonable postures during computing tasks through workstation, chair, desk, display and input device selection and adjustment and special issues regarding notebook computer use and carriage, computing skills and responding to discomfort. The evidence limitations highlight opportunities for future research. The guidelines themselves can inform parents and teachers, equipment designers and suppliers and form the basis of content for teaching children the wise use of computers. STATEMENT OF RELEVANCE: Many children use computers and computer-use habits formed in childhood may track into adulthood. Therefore child-computer interaction needs to be carefully managed. These guidelines inform those responsible for children to assist in the wise use of computers.Ergonomics 04/2010; 53(4):458-77. DOI:10.1080/00140130903556344 · 1.61 Impact Factor