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Price: EUR 250.00Authors: Ciccarelli, Marina | Straker, Leon | Mathiassen, Svend Erik | Pollock, Clare
Article Type: Research Article
Abstract: Objective: School children use information and communication technology (ICT) on a regular basis for a variety of purposes. The purpose of this study was to document how school children spend their time and the different types of ICT they use. Methods: Nine Australian primary school children were observed in their school and away-from-school environments during one school day to record their ICT usage, comparing self-report exposures with direct observations. Self-reported discomfort scores were obtained …throughout the day. Results: Paper-based ICT (Old ICT) was mostly used for productive occupations at school, while electronic-based ICT (New ICT) was mostly used during leisure in away-from-school locations. Tasks involving no ICT (Non-ICT) accounted for the largest proportion of time in both locations during self-care, leisure and instrumental occupations. End-of-day self-reported time performing different occupations was consistent with data from independent observations. Self reported time using Old ICT and New ICT was marginally over-estimated, and time spent using Non-ICT was marginally under-estimated. Conclusion: The children in this study used a variety of ICT in the performance of daily occupations in their natural environments. New ICT use was primarily for leisure, but time spent was less than reported in other studies. Discomfort reports among the participants were low. Participants' self-reports of occupations performed and ICT use was reliable and could be useful as an exposure assessment metric. Show more
Keywords: ICT, tasks, variation, direct observation, self-report
DOI: 10.3233/WOR-2011-1167
Citation: Work, vol. 38, no. 4, pp. 401-412, 2011
Authors: Ciccarelli, Marina | Straker, Leon | Mathiassen, Svend Erik | Pollock, Clare
Article Type: Research Article
Abstract: Objective: There are concerns that insufficient variation in postural and muscle activity associated with use of modern information and communication technology (ICT) presents a risk for musculoskeletal ill-health among school children. However, scientific knowledge on physical exposure variation in this group is limited. The purpose of this study was to quantify postures and muscle activity of school children using different types of ICT. Method: Postures of the head, upper back and upper arm, and muscle …activity of the right and left upper trapezius and right forearm extensors were measured over 10–12 hours in nine school children using different types of ICT at school and away-from-school. Variation in postures and muscle activity was quantified using two indices, EVA_{sd} and APDF_{(90-10)} . Results: Paper-based (Old) ICT tasks produced postures that were less neutral but more variable than electronics-based (New ICT) and Non-ICT tasks. Non-ICT tasks involved mean postures similar to New ICT tasks, but with greater variation. Variation of muscle activity was similar between ICT types in the right and left upper trapezius muscles. Non-ICT tasks produced more muscle activity variation in the right forearm extensor group compared to New and Old ICT tasks. Conclusion: Different ICT tasks produce different degrees of variation in posture and muscle activity. Combining tasks that use different ICT may increase overall exposure variation. More research is needed to determine what degree of postural and muscle activity variation is associated with reduced risk of musculoskeletal ill-health. Show more
Keywords: Children, ICT, exposures, variation
DOI: 10.3233/WOR-2011-1168
Citation: Work, vol. 38, no. 4, pp. 413-427, 2011
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