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Yves Roquelaure - One of the best experts on this subject based on the ideXlab platform.
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within and between individual variability of exposure to work related Musculoskeletal Disorder risk factors
International Journal of Environmental Research and Public Health, 2018Co-Authors: Jeanclaude Sagot, Mohsen Zare, Yves RoquelaureAbstract:Industrial companies indicate a tendency to eliminate variations in operator strategies, particularly following implementation of the lean principle. Companies believe when the operators perform the same prescribed tasks, they have to execute them in the same manner (completing the same gestures and being exposed to the same risk factors). They attempt to achieve better product quality by standardizing and reducing operational leeway. However, operators adjust and modify ways of performing tasks to balance between their abilities and the requirements of the job. This study aims to investigate the variability of exposure to physical risk factors within and between operators when executing the same prescribed tasks. The Ergonomic Standard method was used to evaluate two workstations. Seven operators were observed thirty times between repeated cycle times at those workstations. The results revealed the variability of exposure to risk factors between and within operators in the repeated execution of the same tasks. Individual characteristics and operators' strategies might generate the variability of exposure to risk factors that may be an opportunity to reduce the risks of work-related Musculoskeletal Disorders (WR-MSDs). However, sometimes operators' strategies may cause overexposure to risk factors; operators most often adopt such strategies to undertake their tasks while reducing the workload.
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Risk factors for upper-extremity Musculoskeletal Disorders in the working population.
Arthritis and Rheumatism, 2009Co-Authors: Yves Roquelaure, Clarisse Rouillon, Natacha Fouquet, Annette Leclerc, Alexis Descatha, Annie Touranchet, Marcel Goldberg, Ellen Imbernon, 83 Occupational Physicians Of The Pays De La Loire RegionAbstract:OBJECTIVE: To assess the relative importance of personal and occupational risk factors for upper-extremity Musculoskeletal Disorders in the working population. METHODS: A total of 3,710 workers (58% men) participating in a surveillance program of Musculoskeletal Disorders in a French region in 2002-2005 were included. Upper-extremity Musculoskeletal Disorders were diagnosed by 83 trained occupational physicians performing a standardized physical examination. Personal factors and work exposure were assessed by a self-administered questionnaire. Statistical associations between Musculoskeletal Disorders, personal, and occupational factors were analyzed using logistic regression modeling. RESULTS: A total of 472 workers experienced at least 1 upper-extremity Musculoskeletal Disorder. The risk of upper-extremity Musculoskeletal Disorders increased with age for both sexes (P < 0.001, odds ratio [OR]
83 Occupational Physicians Of The Pays De La Loire Region - One of the best experts on this subject based on the ideXlab platform.
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Risk factors for upper-extremity Musculoskeletal Disorders in the working population.
Arthritis and Rheumatism, 2009Co-Authors: Yves Roquelaure, Clarisse Rouillon, Natacha Fouquet, Annette Leclerc, Alexis Descatha, Annie Touranchet, Marcel Goldberg, Ellen Imbernon, 83 Occupational Physicians Of The Pays De La Loire RegionAbstract:OBJECTIVE: To assess the relative importance of personal and occupational risk factors for upper-extremity Musculoskeletal Disorders in the working population. METHODS: A total of 3,710 workers (58% men) participating in a surveillance program of Musculoskeletal Disorders in a French region in 2002-2005 were included. Upper-extremity Musculoskeletal Disorders were diagnosed by 83 trained occupational physicians performing a standardized physical examination. Personal factors and work exposure were assessed by a self-administered questionnaire. Statistical associations between Musculoskeletal Disorders, personal, and occupational factors were analyzed using logistic regression modeling. RESULTS: A total of 472 workers experienced at least 1 upper-extremity Musculoskeletal Disorder. The risk of upper-extremity Musculoskeletal Disorders increased with age for both sexes (P < 0.001, odds ratio [OR]
William S Marras - One of the best experts on this subject based on the ideXlab platform.
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Musculoskeletal Disorder risk during automotive assembly current vs seated
Applied Ergonomics, 2012Co-Authors: Sue A Ferguson, William S Marras, Gary W Allread, Gregory G Knapik, Riley E SplittstoesserAbstract:Musculoskeletal Disorder risk was assessed during automotive assembly processes. The risk associated with current assembly processes was compared to using a cantilever chair intervention. Spine loads and normalized shoulder muscle activity were evaluated during assembly in eight regions of the vehicle. Eight interior cabin regions of the vehicle were classified by reach distance, height from vehicle floor and front to back. The cantilever chair intervention tool was most effective in the far reach regions regardless of the height. In the front far reach regions both spine loads and normalized shoulder muscle activity levels were reduced. In the middle and close reach regions spine loads were reduced, however, shoulder muscle activity was not, thus an additional intervention would be necessary to reduce shoulder risk. In the back far reach region, spine loads were not significantly different between the current and cantilever chair conditions. Thus, the effectiveness of the cantilever chair was dependent on the region of the vehicle.
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Underlying Factors of Musculoskeletal Disorders: What Are We Missing?
Proceedings of the Human Factors and Ergonomics Society Annual Meeting, 2012Co-Authors: Kermit G. Davis, William S Marras, Laura Punnett, Beth A. Winkelstein, Birgitte M. BlatterAbstract:The purpose of the panel will be to discuss briefly the current knowledge of factors relating to Musculoskeletal Disorders in four main areas: biomechanics, psychosocial, individual characteristics, and pain sensation. The main discussion of the panel will have panelist challenge Musculoskeletal Disorder researchers to focus on new directions and think beyond current paradigms. Copyright 2012 by Human Factors and Ergonomics Society, Inc. All rights reserved.
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Musculoskeletal Disorder risk as a function of vehicle rotation angle during assembly tasks
Applied Ergonomics, 2011Co-Authors: Sue A Ferguson, William S Marras, Gary W Allread, Gregory G Knapik, Kimberly A Vandlen, Riley E Splittstoesser, Gang YangAbstract:Musculoskeletal Disorders (MSD) are costly and common problem in automotive manufacturing. The research goal was to quantify MSD exposure as a function of vehicle rotation angle and region during assembly tasks. The study was conducted at the Center for Occupational Health in Automotive Manufacturing (COHAM) Laboratory. Twelve subjects participated in the study. The vehicle was divided into seven regions, (3 interior, 2 underbody and 2 engine regions) representative of work areas during assembly. Three vehicle rotation angles were examined for each region. The standard horizontal assembly condition (0° rotation) was the reference frame. Exposure was assessed on the spine loads and posture, shoulder posture and muscle activity, neck posture and muscle activity as well as wrist posture. In all regions, rotating the vehicle reduced Musculoskeletal exposure. In five of the seven regions 45° of vehicle rotation represented the position that reduced MSD exposure most. Two of the seven regions indicated 90° of vehicle rotation had the greatest impact for reducing MSD exposure. This study demonstrated that vehicle rotation shows promise for reducing exposure to risk factors for MDS during automobile assembly tasks.
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Musculoskeletal Disorder risk associated with auto rotation angle during an assembly task
Human Factors and Ergonomics Society Annual Meeting Proceedings, 2009Co-Authors: Sue A Ferguson, William S Marras, Gary W Allread, Gregory G Knapik, Kimberly A Vandlen, Riley E Splittstoesser, Gang YangAbstract:The purpose of this study was to quantify how Musculoskeletal Disorder exposure risk changes in an auto assembly task as a function of car body rotation. Twelve subjects participated in the study. There were three car body angles including 1) zero or standard, 2) forty-five degrees and 3) ninety degrees from horizontal. Musculoskeletal exposure included spine loads, spine posture, shoulder posture, neck posture and wrist posture, as well as normalized electromyography of the shoulder and neck. The results showed that Musculoskeletal Disorder exposure risk decreased as the car was rotated to forty-five degrees and further decreased as the car was rotated to ninety degrees. Thus, rotating the car body reduces Musculoskeletal exposure which in turn may reduce the risk of Musculoskeletal Disorders. It should be noted that the results may vary with other assembly tasks.
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national occupational research agenda nora future directions in occupational Musculoskeletal Disorder health research
Applied Ergonomics, 2009Co-Authors: William S Marras, Robert G Cutlip, Susan Burt, Thomas R WatersAbstract:Musculoskeletal Disorders are among the most costly health care problems facing society today. The scientific literature has indicated that psychosocial factors, individual factors, workplace physical requirements, and workplace organizational factors have been associated with risk. Since Musculoskeletal risk is multi-dimensional, the magnitude of risk attributable to various factors can be of importance to scientists and policy makers in designing countermeasures to reduce injury incidence. Traditionally, the disciplines of biomechanics, physiology, and psychophysics have dominated the body of knowledge that has defined exposure limitations to work. However, recent research has explored the association of psychosocial and work organization factors with Musculoskeletal problems. Advances have been made to better quantify the levels of occupational exposure by improved exposure metrics, quantification of three-dimensional loads experienced by certain joints (e.g. the spine), identification of tissue tolerance limits and tissue response to mechanical stresses, and the impact of psychosocial stresses. However, efforts to quantitatively link epidemiological, biomechanical loading, soft tissue tolerance, and psychosocial studies should be pursued to establish a better understanding of the pathways of injury and resultant preventive strategies. Although we are beginning to understand how the major risk factors influence the load-tolerance relationship of human tissue, how these risk factors interact is virtually unexplored. Since the impact of the interactions may be far greater than that of any individual factor, the impact of the interactions between risk factors must be delineated so that work-related risk can be better quantified. Efforts to quantitatively link epidemiological, biomechanical loading, soft tissue tolerance, and psychosocial studies should be pursued to establish a better understanding of the pathways of injury and resultant preventive strategies.
Christopher B Mcleod - One of the best experts on this subject based on the ideXlab platform.
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descriptive epidemiology of gradual return to work for workers with a work acquired Musculoskeletal Disorder in british columbia canada
Journal of Occupational and Environmental Medicine, 2020Co-Authors: Esther T Maas, Mieke Koehoorn, Christopher B McleodAbstract:OBJECTIVE This study investigates the injury, socio-demographic, workplace, and temporal characteristics related with gradual return to work (RTW) among workers with a work-acquired Musculoskeletal Disorder in British Columbia, Canada. METHODS Accepted workers' compensation lost-time claims were extracted between 2010 and 2015 (n = 141,490). A multivariable logistic regression model was used to analyze the determinants of Gradual RTW. RESULTS Within 1 year after injury, 41.0% of workers had at least 1 day of Gradual RTW. Serious injury severity, female sex, increasing age, wage, and firm size, longer sickness absence, and recent previous claims increased the proportion of workers being provided with Gradual RTW. CONCLUSION Consideration of injury, socio-demographic, workplace, and temporal variability in the provision of Gradual RTW can identify inequalities in the provision and increase effective use of Gradual RTW for workers with Musculoskeletal Disorders.
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return to work for multiple jobholders with a work related Musculoskeletal Disorder a population based matched cohort in british columbia
PLOS ONE, 2018Co-Authors: Esther T Maas, Mieke Koehoorn, Christopher B McleodAbstract:Introduction Multiple jobholders (MJHs) have a higher risk of injury compared to single jobholders (SJHs), but it is unknown if return-to-work (RTW) after a work injury is affected by multiple jobholding. This study examined the association between multiple versus single jobholding and time to RTW for workers with a work-related Musculoskeletal Disorder (MSD). Methods We used administrative workers’ compensation data to identify injured workers with an accepted MSD lost-time claim between 2010–2014 in British Columbia, Canada (n = 125,639 SJHs and 9,029 MJHs). The outcome was days until RTW during twelve months after the first day of time-loss. The MJH and SJH cohorts were balanced using coarsened exact matching that yielded a final matched cohort of 8,389 MJHs and 8,389 SJHs. The outcome was estimated with Cox regression, using piecewise models, and the hazard ratios were stratified by type of MSD, a serious injury indicator, gender, weekly workdays preceding MSD, and wage categories. Results MJHs were less likely to RTW compared to SJHs within the first six months after the first time-loss day, with greater and longer lasting effects for males, workers with a serious injury, and a higher wage. No difference between MJHs and SJHs was found for workers who had a six- or seven-day work week preceding MSD, for workers with dislocations, and for workers who were still off work after six months. Conclusions Overall, MJHs with a workweek of maximum five days are disadvantaged compared to SJHs in terms of RTW following a work-related MSD within the first six months after the first time-loss day. This difference might be caused by more precarious job contracts for MJHs that challenges RTW because of lack of support for modified work, higher workload, and reduced likelihood that MJHs file a workers’ compensation claim. Despite adjusting for type of MSD, severity of injury and occupation, the differences persisted for the vast majority of the study sample.
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0350 return to work for multiple jobholders with a work related Musculoskeletal Disorder a population based matched cohort in british columbia
Occupational and Environmental Medicine, 2017Co-Authors: Esther T Maas, Mieke Koehoorn, Christopher B McleodAbstract:The objective of this study is to examine the association between multiple jobholding and return-to-work (RTW) for workers with a work-related Musculoskeletal Disorder (MSD). We hypothesise that multiple jobholders (MJHs) are less likely to RTW compared to single jobholders (SJHs), due to their higher sickness absence threshold, more unstable employment contracts, and higher workload. We used administrative workers’ compensation data to identify workers with accepted MSD lost-time claims and an injury date between 2010–2014 in British Columbia, Canada (n=125,639 SJHs and 9,029 MJHs). The outcome was time until RTW within one year following the first time-loss day. The MJH and SJH cohorts were balanced using coarsened exact matching, which yielded a matched cohort of 8,992 MJHs and 8,992 SJHs. The outcome was estimated using cox proportional hazard models. MJHs were less likely to RTW within one year after the first time-loss day compared to SJHs (Hazard Ratio (HR) 0.78; 95% confidence interval (CI) 0.76–0.81). This applied to men and women, but the reduced likelihood to RTW was larger for male MJHs (HR 0.73; 95% CI 0.70–0.77) than for female (HR 0.83; 95% CI 0.79–0.87). Furthermore, this result was stronger for those with ≤ five pre-injury weekly workdays (HR 0.76; 95% CI 0.73–0.79), compared to those with six or seven days pre-injury weekly workdays (HR 0.94; 95% CI 0.86–1.02). MJHs are disadvantaged compared to SJHs in terms of RTW following a work-related MSD. Identifying differences between MJHs and SJHs is the first step to improve RTW outcomes for this vulnerable segment of the workforce.
Robert J Gatchel - One of the best experts on this subject based on the ideXlab platform.
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the potential utility of the patient health questionnaire as a screener for psychiatric comorbidity in a chronic disabling occupational Musculoskeletal Disorder population
Pain Practice, 2016Co-Authors: Sali Rahadi Asih, Tom G Mayer, Mc Kenna E Bradford, Randy Neblett, Mark J Williams, Meredith M Hartzell, Robert J GatchelAbstract:Objectives The patient health questionnaire (PHQ) is designed for screening psychopathology in primary care settings. However, little is known about its clinical utility in other chronic pain populations, which usually have high psychiatric comorbidities. Design A consecutive cohort of 546 patients with chronic disabling occupational Musculoskeletal Disorder (CDOMD) was administered and compared upon psychosocial assessments, including the PHQ and a structured clinical interview for DSM-IV (SCID). Four PHQ modules were assessed: major depressive Disorder (MDD), generalized anxiety Disorder (GAD), panic Disorder (PD), and alcohol use Disorders (AUD) [including both alcohol abuse and dependence]. Based on the SCID diagnosis, sensitivity and specificity were determined. Results The specificity of the PHQ ranged from moderate to high for all 4 PHQ modules (MDD, 0.79; GAD, 0.67; PD, 0.89; AUD, 0.97). However, the sensitivity was relatively low: MDD (0.58); GAD (0.61); PD (0.49); and AUD (0.24). The PHQ was also associated with psychosocial variables. Patients whose PHQ showed MDD, GAD, or PD reported significantly more depressive symptoms and perceived disability than patients who did not (Ps < 0.001). Patients with MDD or GAD reported significantly higher pain than those without (Ps < 0.001). Conclusions The strong specificity of the PHQ appears to be its primary strength for this cohort. Due to its high specificity, the PHQ could be employed as an additional screening tool to help rule out potential psychiatric comorbidity in patients with CDOMD. The low sensitivity of the PHQ in this population, however, remains a weakness of the PHQ.
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does classification of chronic Musculoskeletal Disorder patients into psychosocial subgroups predict differential treatment responsiveness and 1 year outcomes after a functional restoration program
The Clinical Journal of Pain, 2015Co-Authors: Sali Asih, Tom G Mayer, Mark V Williams, Yun Hee Choi, Robert J GatchelAbstract:Objectives:The objectives of this study: (1) to assess whether Multidimensional Pain Inventory (MPI) profiles predicted differential responses to a functional restoration program (FRP) in chronic disabling occupational Musculoskeletal Disorder (CDOMD) patients; (2) to examine whether coping style im
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the pain anxiety symptoms scale fails to discriminate pain or anxiety in a chronic disabling occupational Musculoskeletal Disorder population
Pain Practice, 2011Co-Authors: Emily Brede, Tom G Mayer, Mark V Williams, Randy Neblett, Robert J GatchelAbstract:Background: The Pain Anxiety Symptoms Scale (PASS) was developed to measure fear and anxiety responses to pain. Many studies have found associations between PASS scores and self-report measures of pain, anxiety, and disability as well as among inhibited movement patterns and activity avoidance behaviors (eg, kinesophobia). This study aimed to identify clinically meaningful cut-off points to identify high or low levels of pain anxiety and to determine if the PASS provides additional useful information in a functional restoration (FR) treatment program for chronic disabling occupational Musculoskeletal Disorder (CDOMD) patients. Methods: A consecutive cohort of 551 patients with CDOMD, who entered and completed a FR program, was administered a battery of psychosocial assessments, including the PASS, at admission and discharge. Socioeconomic outcomes were collected 1 year after discharge. After identifying clinical ranges for mild, moderate, and severe pain anxiety, the three groups were compared on self-report measures of psychosocial distress, clinical diagnoses of psychosocial Disorders, and 1-year socioeconomic outcomes. Results: Correlations between the PASS and all measures of pain, anxiety, and disability were statistically significant. However, only the Pain Disability Questionnaire showed a large correlation coefficient (r > 0.5). Patients with the highest PASS scores were more likely to be diagnosed with a number of Axis I (depression, opioid dependence) or Axis II (Borderline Personality) psychiatric Disorders. They were more likely to display treatment-seeking behavior at 1 year after discharge. However, the PASS failed to differentiate between any other 1-year outcomes. Conclusions: The PASS is elevated when other measures of psychosocial distress are also elevated. However, the PASS fails to discriminate between different indices of depression and anxiety and it is not highly related to 1-year outcomes in a CDOMD cohort. If time and resources are limited, a different measure of psychosocial distress that does relate to socioeconomic outcomes might be a better option in a CDOMD evaluation process. Language: en
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patients with chronic disabling occupational Musculoskeletal Disorder failing to complete functional restoration analysis of treatment resistant personality characteristics
Archives of Physical Medicine and Rehabilitation, 2009Co-Authors: Krista Howard, Tom G Mayer, Brian R Theodore, Robert J GatchelAbstract:Abstract Howard KJ, Mayer TG, Theodore BR, Gatchel RJ. Patients with chronic disabling occupational Musculoskeletal Disorder failing to complete functional restoration: analysis of treatment-resistant personality characteristics. Objective To identify the risk factors for noncompletion of a functional restoration program for patients with chronic disabling occupational Musculoskeletal Disorders. Design Prospective cohort study. Setting Consecutive patients undergoing functional restoration treatment in a regional rehabilitation referral center. Participants A sample of 3052 consecutive patients, classified as either completers (n=2367) or noncompleters (n=685), who entered a functional restoration program. Interventions Not applicable. Main Outcome Measures The measures used included medical evaluations, demographic data, Diagnostic and Statistical Manual of Mental Disorders psychiatric diagnoses, the Minnesota Multiphasic Personality Inventory, and validated questionnaires evaluating pain, depression, and occupational factors. Results The findings revealed that patients who did not complete the program had a longer duration of total disability between injury and admission to treatment (completers=20mo vs noncompleters=13mo; P Conclusions Although some risk factors associated with program noncompletion may be addressed in treatment, socially maladaptive personality Disorders, long-neglected disability, and chronic opioid dependence are the major barriers to successful treatment completion. The patients identified with personality Disorders may display resistance to treatment and may be difficult for the treatment staff to deal with. Early recognition of these treatment-resistant personality characteristics in the functional restoration process may assist the treatment team in developing more effective strategies to help this dysfunctional group.
