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Article type: Research Article
Authors: Albin, Thomas J. | McLoone, Hugh E.;
Affiliations: High Plains Engineering Services, Minneapolis, MN, USA | Microsoft, Redmond, WA, USA | T-Mobile, Redmond, WA, USA
Note: [] Corresponding author: Thomas Albin, High Plains Engineering Services, 4425 34th Avenue South, Minneapolis, MN 55406, USA. E-mail: talbinus@comcast.net
Abstract: OBJECTIVE: Tablets and other mobile devices can be tilted during use. This study examined the effect of tablet tilt angles on reading performance, target-tapping performance, wrist and forearm posture, user comfort and users' tilt angle preferences. METHOD: Ten participants used tablets alternating among four different tilt angles: 0°, 30°, 45°, 60° and a user selected angle. Head, neck, wrist and forearm postural data were collected, along with reading and target-tapping performance. Subjective, perceived impressions were gathered via Likert scale questions. RESULTS: Neck flexion decreased significantly as tilt angle increased. The extreme tilt angles, 0° and 60°, were least preferred while the self-chosen tilt angle, averaging about 34°, was most preferred. Tapping performance was significantly better for the self-chosen tilt angle; however, this may be a practice effect. No effect of tilt was observed on reading performance or for forearm and wrist posture. CONCLUSIONS: Tablet tilt angles should include a range of 20° to 50° at minimum.
Keywords: Tablet, tilt, slate computing, mobile computing, head neck posture
DOI: 10.3233/WOR-131670
Journal: Work, vol. 47, no. 2, pp. 207-211, 2014
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