Is what you see what you get? Standard inclinometry of set upper arm elevation angles
© 2014 Elsevier Ltd and The Ergonomics Society. Previous research suggests inclinometers (INC) underestimate upper arm elevation. This study was designed to quantify possible bias in occupationally relevant postures, and test whether INC performance could be improved using calibration. Participants...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/68620 |
| _version_ | 1848761848499798016 |
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| author | Jackson, J. Mathiassen, Svend Wahlström, J. Liv, P. Forsman, M. |
| author_facet | Jackson, J. Mathiassen, Svend Wahlström, J. Liv, P. Forsman, M. |
| author_sort | Jackson, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2014 Elsevier Ltd and The Ergonomics Society. Previous research suggests inclinometers (INC) underestimate upper arm elevation. This study was designed to quantify possible bias in occupationally relevant postures, and test whether INC performance could be improved using calibration. Participants were meticulously positioned in set arm flexion and abduction angles between 0° and 150°. Different subject-specific and group-level regression models comprising linear and quadratic components describing the relationship between set and INC-registered elevation were developed using subsets of data, and validated using additional data. INC measured arm elevation showed a downward bias, particularly above 60°. INC data adjusted using the regression models were superior to unadjusted data; a subject-specific, two-point calibration based on measurements at 0° and 90° gave results closest to the 'true' set angles. Thus, inclinometer measured arm elevation data required calibration to arrive at 'true' elevation angles. Calibration to a common measurement scale should be considered when comparing arm elevation data collected using different methods. |
| first_indexed | 2025-11-14T10:38:12Z |
| format | Journal Article |
| id | curtin-20.500.11937-68620 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:38:12Z |
| publishDate | 2015 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-686202018-06-29T12:35:01Z Is what you see what you get? Standard inclinometry of set upper arm elevation angles Jackson, J. Mathiassen, Svend Wahlström, J. Liv, P. Forsman, M. © 2014 Elsevier Ltd and The Ergonomics Society. Previous research suggests inclinometers (INC) underestimate upper arm elevation. This study was designed to quantify possible bias in occupationally relevant postures, and test whether INC performance could be improved using calibration. Participants were meticulously positioned in set arm flexion and abduction angles between 0° and 150°. Different subject-specific and group-level regression models comprising linear and quadratic components describing the relationship between set and INC-registered elevation were developed using subsets of data, and validated using additional data. INC measured arm elevation showed a downward bias, particularly above 60°. INC data adjusted using the regression models were superior to unadjusted data; a subject-specific, two-point calibration based on measurements at 0° and 90° gave results closest to the 'true' set angles. Thus, inclinometer measured arm elevation data required calibration to arrive at 'true' elevation angles. Calibration to a common measurement scale should be considered when comparing arm elevation data collected using different methods. 2015 Journal Article http://hdl.handle.net/20.500.11937/68620 10.1016/j.apergo.2014.08.014 Elsevier restricted |
| spellingShingle | Jackson, J. Mathiassen, Svend Wahlström, J. Liv, P. Forsman, M. Is what you see what you get? Standard inclinometry of set upper arm elevation angles |
| title | Is what you see what you get? Standard inclinometry of set upper arm elevation angles |
| title_full | Is what you see what you get? Standard inclinometry of set upper arm elevation angles |
| title_fullStr | Is what you see what you get? Standard inclinometry of set upper arm elevation angles |
| title_full_unstemmed | Is what you see what you get? Standard inclinometry of set upper arm elevation angles |
| title_short | Is what you see what you get? Standard inclinometry of set upper arm elevation angles |
| title_sort | is what you see what you get? standard inclinometry of set upper arm elevation angles |
| url | http://hdl.handle.net/20.500.11937/68620 |