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Correlations between Ratings and Technical Measurements in Hand-Intensive Work
An accurate rating of hand activity and force is essential in risk assessment and for the effective prevention of work-related musculoskeletal disorders. However, it is unclear whether the subjective ratings of workers and observers correlate to corresponding objective technical measures of exposure...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10376394/ https://www.ncbi.nlm.nih.gov/pubmed/37508893 http://dx.doi.org/10.3390/bioengineering10070867 |
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author | Dahlgren, Gunilla Liv, Per Öhberg, Fredrik Slunga Järvholm, Lisbeth Forsman, Mikael Rehn, Börje |
author_facet | Dahlgren, Gunilla Liv, Per Öhberg, Fredrik Slunga Järvholm, Lisbeth Forsman, Mikael Rehn, Börje |
author_sort | Dahlgren, Gunilla |
collection | PubMed |
description | An accurate rating of hand activity and force is essential in risk assessment and for the effective prevention of work-related musculoskeletal disorders. However, it is unclear whether the subjective ratings of workers and observers correlate to corresponding objective technical measures of exposure. Fifty-nine workers were video recorded while performing a hand-intensive work task at their workplace. Self-ratings of hand activity level (HAL) and force (Borg CR10) using the Hand Activity Threshold Limit Value(®) were assessed. Four ergonomist observers, in two pairs, also rated the hand activity and force level for each worker from video recordings. Wrist angular velocity was measured using inertial movement units. Muscle activity in the forearm muscles flexor carpi radialis (FCR) and extensor carpi radialis (ECR) was measured with electromyography root mean square values (RMS) and normalized to maximal voluntary electrical activation (MVE). Kendall’s tau-b correlations were statistically significant between self-rated hand activity and wrist angular velocity at the 10th, 50th, and 90th percentiles (0.26, 0.31, and 0.23) and for the ratings of observers (0.32, 0.41, and 0.34). Significant correlations for force measures were found only for observer-ratings in five of eight measures (FCR 50th percentile 0.29, time > 10%MVE 0.43, time > 30%MVE 0.44, time < 5% −0.47) and ECR (time > 30%MVE 0.26). The higher magnitude of correlation for observer-ratings suggests that they may be preferred to the self-ratings of workers. When possible, objective technical measures of wrist angular velocity and muscle activity should be preferred to subjective ratings when assessing risks of work-related musculoskeletal disorders. |
format | Online Article Text |
id | pubmed-10376394 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-103763942023-07-29 Correlations between Ratings and Technical Measurements in Hand-Intensive Work Dahlgren, Gunilla Liv, Per Öhberg, Fredrik Slunga Järvholm, Lisbeth Forsman, Mikael Rehn, Börje Bioengineering (Basel) Article An accurate rating of hand activity and force is essential in risk assessment and for the effective prevention of work-related musculoskeletal disorders. However, it is unclear whether the subjective ratings of workers and observers correlate to corresponding objective technical measures of exposure. Fifty-nine workers were video recorded while performing a hand-intensive work task at their workplace. Self-ratings of hand activity level (HAL) and force (Borg CR10) using the Hand Activity Threshold Limit Value(®) were assessed. Four ergonomist observers, in two pairs, also rated the hand activity and force level for each worker from video recordings. Wrist angular velocity was measured using inertial movement units. Muscle activity in the forearm muscles flexor carpi radialis (FCR) and extensor carpi radialis (ECR) was measured with electromyography root mean square values (RMS) and normalized to maximal voluntary electrical activation (MVE). Kendall’s tau-b correlations were statistically significant between self-rated hand activity and wrist angular velocity at the 10th, 50th, and 90th percentiles (0.26, 0.31, and 0.23) and for the ratings of observers (0.32, 0.41, and 0.34). Significant correlations for force measures were found only for observer-ratings in five of eight measures (FCR 50th percentile 0.29, time > 10%MVE 0.43, time > 30%MVE 0.44, time < 5% −0.47) and ECR (time > 30%MVE 0.26). The higher magnitude of correlation for observer-ratings suggests that they may be preferred to the self-ratings of workers. When possible, objective technical measures of wrist angular velocity and muscle activity should be preferred to subjective ratings when assessing risks of work-related musculoskeletal disorders. MDPI 2023-07-21 /pmc/articles/PMC10376394/ /pubmed/37508893 http://dx.doi.org/10.3390/bioengineering10070867 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Dahlgren, Gunilla Liv, Per Öhberg, Fredrik Slunga Järvholm, Lisbeth Forsman, Mikael Rehn, Börje Correlations between Ratings and Technical Measurements in Hand-Intensive Work |
title | Correlations between Ratings and Technical Measurements in Hand-Intensive Work |
title_full | Correlations between Ratings and Technical Measurements in Hand-Intensive Work |
title_fullStr | Correlations between Ratings and Technical Measurements in Hand-Intensive Work |
title_full_unstemmed | Correlations between Ratings and Technical Measurements in Hand-Intensive Work |
title_short | Correlations between Ratings and Technical Measurements in Hand-Intensive Work |
title_sort | correlations between ratings and technical measurements in hand-intensive work |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10376394/ https://www.ncbi.nlm.nih.gov/pubmed/37508893 http://dx.doi.org/10.3390/bioengineering10070867 |
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