Head flexion angle while using a smartphone

Repetitive or prolonged head flexion posture while using a smartphone is known as one of risk factors for pain symptoms in the neck. To quantitatively assess the amount and range of head flexion of smartphone users, head forward flexion angle was measured from 18 participants when they were conducin...

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Bibliographic Details
Published in:Ergonomics 2015-02, Vol.58 (2), p.220-226
Main Authors: Lee, Sojeong, Kang, Hwayeong, Shin, Gwanseob
Format: Article
Language:English
Subjects:
Ergonomics
Female
Head - physiology
head flexion
Humans
Male
Neck - physiology
Neck pain
Neck Pain - etiology
Neck Pain - physiopathology
Posture
Posture - physiology
Range of Motion, Articular
Risk factors
Smartphone
Smartphones
Task Performance and Analysis
Text Messaging
text neck
Young Adult
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Summary:Repetitive or prolonged head flexion posture while using a smartphone is known as one of risk factors for pain symptoms in the neck. To quantitatively assess the amount and range of head flexion of smartphone users, head forward flexion angle was measured from 18 participants when they were conducing three common smartphone tasks (text messaging, web browsing, video watching) while sitting and standing in a laboratory setting. It was found that participants maintained head flexion of 33-45° (50th percentile angle) from vertical when using the smartphone. The head flexion angle was significantly larger (p 
ISSN:0014-0139
1366-5847
DOI:10.1080/00140139.2014.967311