Electromyographic signs of shoulder muscle fatigue in repetitive arm work paced by the Methods-Time Measurement system.

Sundelin, Gunnevi; Hagberg, Mats

doi:10.5271/sjweh.1579

Cited by 60 publications

(39 citation statements)

References 19 publications

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“…Remarkably, there was no clear relationship between subjective indicators (perceived discomfort in the neck and shoulder region) and the objective indicators (MPF and amplitude of the EMG signal) of muscle fatigue. Sundelin and Hagberg (1992) were able to find a significant relationship between subjective (discomfort) and objective indicators (MPF and amplitude of the EMG of the trapezius muscle). However, that study used a 1-h strictly controlled laboratory task with a relative high intensity and measurement frequency (12 times/hour).…”

Section: Discussionmentioning

confidence: 87%

“…Several studies show that muscle fatigue is an important initiating factor in the development of neck and shoulder muscle disorders (Bjelle et al 1981, Rempel et al 1992, Sundelin and Hagberg 1992, Takala 2002. Therefore, muscle fatigue, when measured during work, may provide a relevant biomarker for cumulative exposure to repetitive work (Dennerlein et al 2003).…”

Section: Introductionmentioning

confidence: 99%

“…In a laboratory study by Sundelin and Hagberg (1992), subjects performed a pick and place task for 1 h with their right arm. An increase in amplitude and a decrease in frequency content of the trapezius muscle EMG was found, while subjective ratings of fatigue in the shoulder muscle significantly increased.…”

Section: Introductionmentioning

confidence: 99%

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Development of fatigue and discomfort in the upper trapezius muscle during light manual work

2007

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Section: Discussionmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

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Development of fatigue and discomfort in the upper trapezius muscle during light manual work

2007

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“…These words reflect the scepticism of a clinician. On the other hand, many studies, investigated painful muscles without any distinctive pathology and found electrophysiological and morphological changes indicating muscular fatigue and pain [9,10]. To relieve uncertainty about the terms, we not only used the questionnaires to localize painful areas but performed special clinical tests as well, to diagnose musculoskeletal disorders in the assessment of associated risk factors.…”

Section: Discussionmentioning

confidence: 99%

Ergonomic Risk Factors for Cumulative Trauma Disorders in VDU Operators

Turhan

Akat

Akyuz

et al. 2008

International Journal of Occupational Safety and Ergonomics

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“…Assembly work in Swedish industries is often paced between MTM-110 and MTM-120 (Mathiassen & Winkel, 1996;Sundelin & Hagberg, 1992). Since, in an MTM context, movements in the present work cycle were equal in all four workstation designs, participants should, according to the MTM system, be able to work at paces between MTM-110 and MTM-120, irrespective of movement direction or working height.…”

Section: Mtm Ratings Of Mawpmentioning

confidence: 99%

Influence of Posture Variation on Shoulder Muscle Activity, Heart Rate, and Perceived Exertion in a Repetitive Manual Task

Luger

Mathiassen

Bösch

et al. 2017

IISE Transactions on Occupational Ergonomics and Human Factors

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OCCUPATIONAL APPLICATIONS In repetitive work, more physical variation is believed to reduce the risk of eventually developing musculoskeletal disorders. We investigated the extent to which workstation designs leading to more variation in upper arm postures during a pick-and-place task influenced outcomes of relevance to musculoskeletal disorder risk, including muscle activity, cardiovascular response, and perceived exertion, measured through the maximal acceptable work pace. Posture variation to the extent obtained in our experiment had only minor effects on these outcomes, and considerably less impact than a moderate change in working height. Apparently, substantial manipulations of the workstation or of the work task will be needed to accomplish variation to an extent that can significantly change outcomes of relevance to occupational musculoskeletal disorders and, thus, represent a potential for reduction in musculoskeletal disorder risk.TECHNICAL ABSTRACT Background: Repetitive light assembly work is associated with an increased risk for developing work-related musculoskeletal disorders. More exposure variation, for instance by redesigning the workstation, has been proposed as an effective intervention. Purpose: We investigated the effect of upper arm posture variation in a 1-hour repetitive pick-and-place task on shoulder muscle activity, heart rate, and perceived exertion, measured on the Borg CR-10 scale and in terms of maximal acceptable work pace (MAWP). This is an Open Access article distributed under the terms of the Creative Commons AttributionNonCommercial-NoDerivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way. ), while trapezius activity (78% RVE) and perceived exertion (Borg CR-10) tended to be higher. Conclusions: Our results indicate that posture variation to the extent achieved in the current experiment leads to less effects on muscle activity and perceived exertion than a moderate change in working height. 2472-5838

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Electromyographic signs of shoulder muscle fatigue in repetitive arm work paced by the Methods-Time Measurement system.

Cited by 60 publications

References 19 publications

Development of fatigue and discomfort in the upper trapezius muscle during light manual work

Development of fatigue and discomfort in the upper trapezius muscle during light manual work

Ergonomic Risk Factors for Cumulative Trauma Disorders in VDU Operators

Influence of Posture Variation on Shoulder Muscle Activity, Heart Rate, and Perceived Exertion in a Repetitive Manual Task

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