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Effects Job Rotation in the Prevention of Work Related Musculoskeletal Disorders (Jobrotation)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT01979731
Recruitment Status : Completed
First Posted : November 8, 2013
Last Update Posted : February 24, 2016
Sponsor:
Collaborator:
Maria Luiza Caires Comper
Information provided by (Responsible Party):
Rosimeire Simprini Padula, Universidade Cidade de Sao Paulo

Brief Summary:

The objective this study is evaluated if job rotation (change works that function every to work hours)contributes to reduce absence from work to complaints musculoskeletal disorders. And:

  • Improve general health status
  • Improve musculoskelettal symptoms
  • Improve work performance
  • Decrease costs with absence

Condition or disease Intervention/treatment Phase
Musculoskeletal Diseases Other: Job rotation Other: Guidelines ergonomics Not Applicable

Detailed Description:
This study is single-blinded RCT, whose aim is to evaluate the effect of the rotation function in the prevention of musculoskeletal disorders in industrial workers Methods: Participants will be recruited from employees a textile industry. The inclusion criteria are: employees age between 18 and 65 years and be able to read and understand the questionnaires. The number of working hours lost due to leave for sick leave due to illness of the musculoskeletal system and connective tissue (M Group International Classification of Diseases, ICD-10) is used to estimate the sample size. The average time lost during the last three months, in companies where the study was conducted is approximately 1,100 hours. Assume that interventions will enable a reduction of this number by 10%, ie, the groups will have a difference of 100 lost working hours, with a standard deviation of 250 hours. Will be considered a statistical power of 80%, α=0.05 and a follow-up loss of up to 15%. Thus, 116 workers are required per group. The productive sectors included in the study will be pre- stratified from the level of exposure to ergonomic risk factors. The sectors with similar demands will be grouped and randomly divided between the intervention group and the control group. The intervention group will perform rotation function, switching between tasks with low, moderate and high ergonomic risk and different requests for ergonomic body region added to ergonomic guidelines. The control group will receive only the ergonomic guidelines. Primary outcomes: Absence from work due to sick leave due to disease of the musculoskeletal system and connective tissue. Secondary outcomes are: musculoskeletal symptoms (Nordic Questionnaire and EVA), ergonomic risk factors (Quick exposure Check and Job Factors Questionnaire), psychosocial factors and fatigue (Need for Recovery Scale (NFR), general health status (WHOQOL-bref), physical activity level (Baecke Questionnaire), productivity with Work Performance Questionnaire (HPQ) and costs (incremental cost effectiveness ratio). Outcomes will be assessed at baseline and after 3 , 6 and 12 months . The information on the amount of hours lost by removal for medical leave will be recorded daily. Expected results: It is expected that interventions to reduce the occurrence of musculoskeletal disorders and consequent worker absenteeism due to sick leave, 100 hours of work lost. It is expected that the results obtained in this study may contribute to setting standards in the field of Occupational Health, as well as for decision making of professionals working in this area.

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 116 participants
Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: Single (Investigator)
Primary Purpose: Prevention
Official Title: Effects Job Rotation in the Prevention of Work Related Musculoskeletal Disorders: Cluster Randomized Trial
Study Start Date : September 2013
Actual Primary Completion Date : February 2015
Actual Study Completion Date : February 2016

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Ergonomics

Arm Intervention/treatment
Experimental: Job rotation
The intervention group will perform rotation function, switching between tasks with low, moderate and high ergonomic risk and different requests for ergonomic body region added to ergonomic guidelines.
Other: Guidelines ergonomics
Orientation about manual material handling, posture, furniture, rest break and others in general.

Active Comparator: Guidelines Ergonomics
Manual material handling Orientation posture Orientation furniture Orientation in general
Other: Job rotation
The intervention group will perform rotation function, switching between tasks with low, moderate and high ergonomic risk and different requests for ergonomic body region added to ergonomic guidelines.




Primary Outcome Measures :
  1. Decrease musculoskeletal absence from work. [ Time Frame: After 6 months ]
    Absence from work due to sick leave due to disease of the musculoskeletal system and connective tissue


Secondary Outcome Measures :
  1. Decrease Musculoskeletal symptoms [ Time Frame: After 6 months ]
    Musculoskeletal symptoms (Nordic Questionnaire1 and EVA)


Other Outcome Measures:
  1. Change Geral Health Condictions [ Time Frame: After 6 months ]
    Psychosocial factors and fatigue (Need for Recovery Scale (NFR), general health status (WHOQOL-bref), physical activity level (Baecke Questionnaire)

  2. Reduced Cost effectiveness [ Time Frame: After 6 months ]
    Productivity (Work Performance Questionnaire (HPQ) and costs (incremental cost effectiveness ratio).



Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 65 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Sectors workers with production lines that allow switching between different tasks and requests biomechanical exposure levels ergonomic risk. And work is carried out in production cells.

Exclusion Criteria:

  • Sector workers whose production lines are automated or semi-automated, possessing the pace of work determined by machinery and that the work stoppage is not possible.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01979731


Locations
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Brazil
Rosimeire Simprini Padula
Atibaia, SP, Brazil, 12942-770
Sponsors and Collaborators
Universidade Cidade de Sao Paulo
Maria Luiza Caires Comper
Investigators
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Study Director: Rosimeire S Padula, PhD Universidade Cidade de São Paulo
Additional Information:
Publications:
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
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Responsible Party: Rosimeire Simprini Padula, PhD. Clinical Professor, Universidade Cidade de Sao Paulo
ClinicalTrials.gov Identifier: NCT01979731    
Other Study ID Numbers: 18170313500000064
First Posted: November 8, 2013    Key Record Dates
Last Update Posted: February 24, 2016
Last Verified: February 2016
Keywords provided by Rosimeire Simprini Padula, Universidade Cidade de Sao Paulo:
Occupational health
Ergonomics
Environments
Prevention and Control
Additional relevant MeSH terms:
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Musculoskeletal Diseases