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Work-related neck and upper limb disorders - Quantitative exposure-response relationships adjusted for personal characteristics and psychosocial conditions

Balogh, Istvan LU ; Arvidsson, Inger LU ; Björk, Jonas LU ; Hansson, Gert Åke LU ; Ohlsson, Kerstina LU ; Skerfving, Staffan LU and Nordander, Catarina LU (2019) In BMC Musculoskeletal Disorders 20(1).
Abstract

Background: We have previously reported quantitative exposure-response relationships between physical exposures recorded by technical methods, and complaints and diagnoses in the neck/shoulders, and the elbows/hands, based on group data. In the present study the number of workers was doubled, and information on individual factors, and psychosocial working conditions was used. Relationships between various kinds of exposure and response have been analysed in this larger and more detailed sample. Methods: The prevalence of complaints (Nordic Questionnaire) and diagnoses (clinical examination) were recorded in a number of occupational groups within which the participants had similar work tasks, 34 groups of female employees (N = 4733... (More)

Background: We have previously reported quantitative exposure-response relationships between physical exposures recorded by technical methods, and complaints and diagnoses in the neck/shoulders, and the elbows/hands, based on group data. In the present study the number of workers was doubled, and information on individual factors, and psychosocial working conditions was used. Relationships between various kinds of exposure and response have been analysed in this larger and more detailed sample. Methods: The prevalence of complaints (Nordic Questionnaire) and diagnoses (clinical examination) were recorded in a number of occupational groups within which the participants had similar work tasks, 34 groups of female employees (N = 4733 women) and 17 groups of male employees (N = 1107 men). Age and other individual characteristics were recorded, as well as psychosocial work environment factors (job-content questionnaire) for most participants. Postures and velocities (inclinometry) of the head (N = 505) and right upper arm (N = 510), right wrist postures and velocities (electrogoniometry; N = 685), and muscular activity (electromyography; EMG) in the right trapezius muscle (N = 647) and forearm extensors (N = 396) were recorded in representative sub-groups. Exposure-response relationships between physical exposure and musculoskeletal disorders, adjusted for individual factors with Poisson regression were then calculated. The effect of introducing psychosocial conditions into the models was also assessed. Results: Associations were found between head velocity, trapezius activity, upper arm velocity, forearm extensor activity and wrist posture and velocity, and most neck/shoulder and elbow/hand complaints and diagnoses. Adjustment for age, other individual characteristics and psychosocial work conditions had only a limited effect on these associations. For example, the attributable fraction for tension neck syndrome among female workers with the highest quintile of trapezius activity was 58%, for carpal tunnel syndrome versus wrist velocity it was 92% in men in the highest exposure quintile. Conclusions: Based on the findings, we propose threshold limit values for upper arm and wrist velocity.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Electromyography, Ergonomics, Goniometry, Inclinometry, Neck, Shoulder, Technical measurements, Threshold limit value, Work-related musculoskeletal disorders, Wrist
in
BMC Musculoskeletal Disorders
volume
20
issue
1
publisher
BioMed Central
external identifiers
  • scopus:85063814835
ISSN
1471-2474
DOI
10.1186/s12891-019-2491-6
language
English
LU publication?
yes
id
b54c7a4a-3ff7-4577-94d5-4fd29cff2ace
date added to LUP
2019-04-23 13:09:20
date last changed
2019-05-14 04:53:58
@article{b54c7a4a-3ff7-4577-94d5-4fd29cff2ace,
  abstract     = {<p>Background: We have previously reported quantitative exposure-response relationships between physical exposures recorded by technical methods, and complaints and diagnoses in the neck/shoulders, and the elbows/hands, based on group data. In the present study the number of workers was doubled, and information on individual factors, and psychosocial working conditions was used. Relationships between various kinds of exposure and response have been analysed in this larger and more detailed sample. Methods: The prevalence of complaints (Nordic Questionnaire) and diagnoses (clinical examination) were recorded in a number of occupational groups within which the participants had similar work tasks, 34 groups of female employees (N = 4733 women) and 17 groups of male employees (N = 1107 men). Age and other individual characteristics were recorded, as well as psychosocial work environment factors (job-content questionnaire) for most participants. Postures and velocities (inclinometry) of the head (N = 505) and right upper arm (N = 510), right wrist postures and velocities (electrogoniometry; N = 685), and muscular activity (electromyography; EMG) in the right trapezius muscle (N = 647) and forearm extensors (N = 396) were recorded in representative sub-groups. Exposure-response relationships between physical exposure and musculoskeletal disorders, adjusted for individual factors with Poisson regression were then calculated. The effect of introducing psychosocial conditions into the models was also assessed. Results: Associations were found between head velocity, trapezius activity, upper arm velocity, forearm extensor activity and wrist posture and velocity, and most neck/shoulder and elbow/hand complaints and diagnoses. Adjustment for age, other individual characteristics and psychosocial work conditions had only a limited effect on these associations. For example, the attributable fraction for tension neck syndrome among female workers with the highest quintile of trapezius activity was 58%, for carpal tunnel syndrome versus wrist velocity it was 92% in men in the highest exposure quintile. Conclusions: Based on the findings, we propose threshold limit values for upper arm and wrist velocity.</p>},
  articleno    = {139},
  author       = {Balogh, Istvan and Arvidsson, Inger and Björk, Jonas and Hansson, Gert Åke and Ohlsson, Kerstina and Skerfving, Staffan and Nordander, Catarina},
  issn         = {1471-2474},
  keyword      = {Electromyography,Ergonomics,Goniometry,Inclinometry,Neck,Shoulder,Technical measurements,Threshold limit value,Work-related musculoskeletal disorders,Wrist},
  language     = {eng},
  number       = {1},
  publisher    = {BioMed Central},
  series       = {BMC Musculoskeletal Disorders},
  title        = {Work-related neck and upper limb disorders - Quantitative exposure-response relationships adjusted for personal characteristics and psychosocial conditions},
  url          = {http://dx.doi.org/10.1186/s12891-019-2491-6},
  volume       = {20},
  year         = {2019},
}