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Correlations betwee...
Correlations between Ratings and Technical Measurements in Hand-Intensive Work
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- Dahlgren, Gunilla (author)
- Umeå universitet,Avdelningen för hållbar hälsa,Umeå Univ, Dept Publ Hlth & Clin Med, Sect Sustainable Hlth, S-90187 Umeå, Sweden.
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- Liv, Per, 1979- (author)
- Umeå universitet,Avdelningen för hållbar hälsa,Umeå Univ, Dept Publ Hlth & Clin Med, Sect Sustainable Hlth, S-90187 Umeå, Sweden.
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- Öhberg, Fredrik, 1969- (author)
- Umeå universitet,Radiofysik,Umeå Univ, Dept Radiat Sci, Radiat Phys, S-90187 Umeå, Sweden.
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- Slunga-Järvholm, Lisbeth (author)
- Umeå universitet,Avdelningen för hållbar hälsa,Umeå Univ, Dept Publ Hlth & Clin Med, Sect Sustainable Hlth, S-90187 Umeå, Sweden.
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- Forsman, Mikael, Professor (author)
- Karolinska Institutet,KTH,Ergonomi,Karolinska Inst, IMM Inst Environm Med, S-17177 Stockholm, Sweden.,IMM Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Division of Ergonomics, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Hälsovägen 11C, Huddinge, Sweden
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- Rehn, Börje, 1967- (author)
- Umeå universitet,Avdelningen för fysioterapi,Umeå Univ, Dept Community Med & Rehabil, Physiotherapy, S-90187 Umeå, Sweden.
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(creator_code:org_t)
- MDPI AG, 2023
- 2023
- English.
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In: Bioengineering. - : MDPI AG. - 2306-5354. ; 10:7
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Abstract
Subject headings
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- 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(& REG;) 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.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Produktionsteknik, arbetsvetenskap och ergonomi (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Production Engineering, Human Work Science and Ergonomics (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Arbetsmedicin och miljömedicin (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Occupational Health and Environmental Health (hsv//eng)
Keyword
- ergonomics
- humans
- musculoskeletal disorders
- upper extremity
- wrist
- hand
- occupational health
- risk
- exposure
- rating
- psychophysics
- hand intensity
- inertial measurement units
- electromyography
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Dahlgren, Gunill ...
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Liv, Per, 1979-
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Öhberg, Fredrik, ...
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Slunga-Järvholm, ...
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Forsman, Mikael, ...
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Rehn, Börje, 196 ...
- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Mechanical Engin ...
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and Production Engin ...
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- MEDICAL AND HEALTH SCIENCES
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MEDICAL AND HEAL ...
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and Health Sciences
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and Occupational Hea ...
- Articles in the publication
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Bioengineering
- By the university
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Royal Institute of Technology
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Umeå University
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Karolinska Institutet