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Erschienen in:
2019 | OriginalPaper | Buchkapitel
Back Flexion and Extension: The Effects of Static Posture on Children Using Mobile Devices
verfasst von : Regina Pope-Ford
Erschienen in: Advances in Safety Management and Human Factors
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Abstract
In 2016, smartphone sales grew five percent, with nearly 1.5 billion smartphones sold worldwide. In the United States (US), there were 220 million users. These 220 million users represent the 77% of American households who own a smartphone. A large number of the smartphone users are children. The intent of this study is to understand the effect smartphone use might have on the musculoskeletal system of young children. Eighteen participants, 11 males and 7 females, ages 10–12, were interviewed. The participants were observed and quantitative data was collected as 17 trials were performed; noting back posture while children used a smartphone and tablet. A goniometer was used to measure back flexion and extension. Measured back flexion ranged from 8.5 to 54° and back extension ranged from 12 to 24°. Results indicate that back support and/or correct posture are important when using mobile devices.