Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/8881
Title: A comparison of muscle activity in using touchscreen smartphone among young people with and without chronic neck–shoulder pain
Authors: Xie, Y
Szeto, GPY 
Dai, J
Madeleine, P
Keywords: Muscle activity
Neck–shoulder pain
Texting
Touchscreen smartphone
Issue Date: 2015
Publisher: Taylor & Francis
Source: Ergonomics, 2015 How to cite?
Journal: Ergonomics 
Abstract: This study aimed to examine differences in muscle activity between young people with and without neck–shoulder pain (n = 20 in each group), when they performed texting on a smartphone. Texting was compared between using both hands (‘bilateral texting’) and with only one hand (‘unilateral texting’). Texting tasks were also compared with computer typing. Surface electromyography from three proximal postural muscles and four distal hand/thumb muscles on the right side was recorded. Compared with healthy controls, young people with neck–shoulder pain showed altered motor control consisting of higher muscle activity in the cervical erector spinae and upper trapezius when performing texting and typing tasks. Generally, unilateral texting was associated with higher muscle loading compared with bilateral texting especially in the forearm muscles. Compared with computer typing, smartphone texting was associated with higher activity in neck extensor and thumb muscles but lower activity in upper and lower trapezius as well as wrist extensors.
URI: http://hdl.handle.net/10397/8881
ISSN: 0014-0139
EISSN: 1366-5847
DOI: 10.1080/00140139.2015.1056237
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