An iPhone application for upper arm posture and movement measurements

There is a need for objective methods for upper arm elevation measurements for accurate and convenient risk assessments. The aims of this study were (i) to compare a newly developed iOS application (iOS) for measuring upper arm elevation and angular velocity with a reference optical tracking system...

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Bibliographic Details
Published in:Applied ergonomics 2017-11, Vol.65, p.492-500
Main Authors: Yang, Liyun, Grooten, Wilhelmus J.A., Forsman, Mikael
Format: Article
Language:English
Subjects:
Accelerometer
Accelerometry - methods
Adult
Arm - physiology
Biomechanical Phenomena
Female
Gyroscope
Humans
Male
Middle Aged
Mobile Applications
Movement
Posture - physiology
Reproducibility of Results
Smartphone
Work-related musculoskeletal disorders
Young Adult
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Summary:There is a need for objective methods for upper arm elevation measurements for accurate and convenient risk assessments. The aims of this study were (i) to compare a newly developed iOS application (iOS) for measuring upper arm elevation and angular velocity with a reference optical tracking system (OTS), and (ii) to compare the accuracy of the iOS incorporating a gyroscope and an accelerometer with using only an accelerometer, which is standard for inclinometry. The iOS–OTS limits of agreement for static postures (9 subjects) were −4.6° and 4.8°. All root mean square differences in arm swings and two simulated work tasks were 0.98. The mean absolute iOS–OTS difference of median angular velocity was
ISSN:0003-6870
1872-9126
1872-9126
DOI:10.1016/j.apergo.2017.02.012