Effect of the presence or absence of upper limb support on posture when a smartphone user is in a seated position under ambient light conditions - Archive ouverte HAL Access content directly
Journal Articles International Journal of Industrial Ergonomics Year : 2020

Effect of the presence or absence of upper limb support on posture when a smartphone user is in a seated position under ambient light conditions

Abstract

Background: Home, public transport, work, the number of environmental positions constraining the use of smartphones is significant.Research question: How can the presence of an upper limb support influence the sitting posture of smartphone users under fixed illumination and brightness?Methods: Twelve subjects (21,6 ± 5,5 years old) performed web browsing under two environmental positions (POSITION): sitting with and without support (table). The users' postures were evaluated through relative kinematics joint angles analysis. A repeated measure analysis of variance and Tukey post-hoc tests were performed to test the effect of POSITION on posture.Results: In sitting position in front of a table, neck is less stressed (flexion < 10°) and trunk and shoulder are supported which suggests less constrains for the joints.Relevance to industry: To prevent injury or pain, the use of an upper limb support (to lean on) should be considered for people/workers who use the smartphone frequently.
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Dates and versions

hal-03492587 , version 1 (17-10-2022)

Licence

Attribution - NonCommercial

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Johan Merbah, Julien Jacquier-Bret, Philippe Gorce. Effect of the presence or absence of upper limb support on posture when a smartphone user is in a seated position under ambient light conditions. International Journal of Industrial Ergonomics, 2020, 80, pp.103050 -. ⟨10.1016/j.ergon.2020.103050⟩. ⟨hal-03492587⟩

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