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Article type: Research Article
Authors: Intolo, Pattariyaa; * | Prasongsansuk, Nuttheeraa | Srilabutr, Pimmasa | Sittichoksakulchai, Wannapusa | Khutok, Kornkanoka | Baxter, David Gb
Affiliations: [a] Faculty of Physical Therapy, Srinakharinwirot University, Thailand | [b] Faculty of Health Sciences, University of Otago, New Zealand
Correspondence: [*] Address for correspondence: Asist. Prof. Pattariya Intolo, Department of Physical Therapy, Faculty of Physical Therapy, Srinakharinwirot University, Nakhon Nayok, 26120, Thailand. Tel.: +66 84 944 5859; E-mail: [email protected].
Abstract: BACKGROUND:Children regularly use tablets in a variety of postures. Previous studies have shown that prolonged use of such an IT device increases the risk of musculoskeletal pain. OBJECTIVE:To investigate pain and muscle activity during tablet use by children in three different workstation positions–on the table with a case set, on a table, and on the lap. METHODS:Twenty five healthy and right-handed participants aged 10–12 years were recruited and assigned to play computer games for 15 minutes in each workstation. Pain(VAS) was measured at the neck, shoulder, upper back, and forearm regions immediately after tablet use. Electromyography (EMG) was measured at the cervical erector spinae (CES), upper trapezius (UT), middle trapezius (MT), and wrist extensors (WE) muscles during the final two minutes. RESULTS:Results showed that using a tablet on the table with a case set caused the least pain in the neck region (p < 0.05), compared with the use on the table and on the lap(which had pain scales of 0.37±0.86, 1.74±1.77, 1.72±1.90, respectively; mean±SD). EMG of cervical erector spinae during tablet use on the table with a case set was significantly lower (p < 0.05) than those on the table and on the lap (muscle activity of 22.38±9.54,35.37±16.82, 35.29±13.30 respectively). CONCLUSIONS:Tablet use on the table with a case set demonstrated a significantly lower severity of pain at the neck region than tablet use on the table and on the lap. To prevent musculoskeletal disorders, tablet use on the table with a case set is recommended as the optimal workstation for children.
Keywords: EMG, information technology, kids, discomfort, mobile device
DOI: 10.3233/WOR-192971
Journal: Work, vol. 64, no. 1, pp. 85-91, 2019
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