Effects Job Rotation in the Prevention of Work Related Musculoskeletal Disorders

NCT ID: NCT01979731

Last Updated: 2016-02-24

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

116 participants

Study Classification

INTERVENTIONAL

Study Start Date

2013-09-30

Study Completion Date

2016-02-29

Brief Summary

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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

Detailed Description

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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.

Conditions

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Musculoskeletal Diseases

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

SINGLE_GROUP

Primary Study Purpose

PREVENTION

Blinding Strategy

SINGLE

Investigators

Study Groups

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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.

Group Type EXPERIMENTAL

Guidelines ergonomics

Intervention Type OTHER

Orientation about manual material handling, posture, furniture, rest break and others in general.

Guidelines Ergonomics

Manual material handling Orientation posture Orientation furniture Orientation in general

Group Type ACTIVE_COMPARATOR

Job rotation

Intervention Type OTHER

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.

Interventions

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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.

Intervention Type OTHER

Guidelines ergonomics

Orientation about manual material handling, posture, furniture, rest break and others in general.

Intervention Type OTHER

Eligibility Criteria

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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.
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Maria Luiza Caires Comper

UNKNOWN

Sponsor Role collaborator

Universidade Cidade de Sao Paulo

OTHER

Sponsor Role lead

Responsible Party

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Rosimeire Simprini Padula

PhD. Clinical Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Rosimeire S Padula, PhD

Role: STUDY_DIRECTOR

Universidade Cidade de São Paulo

Locations

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Rosimeire Simprini Padula

Atibaia, São Paulo, Brazil

Site Status

Countries

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Brazil

References

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Comper ML, Padula RS. The effectiveness of job rotation to prevent work-related musculoskeletal disorders: protocol of a cluster randomized clinical trial. BMC Musculoskelet Disord. 2014 May 22;15:170. doi: 10.1186/1471-2474-15-170.

Reference Type BACKGROUND
PMID: 24885958 (View on PubMed)

Comper MLC, Dennerlein JT, Evangelista GDS, Rodrigues da Silva P, Padula RS. Effectiveness of job rotation for preventing work-related musculoskeletal diseases: a cluster randomised controlled trial. Occup Environ Med. 2017 Aug;74(8):545-552. doi: 10.1136/oemed-2016-104077. Epub 2017 Mar 1.

Reference Type DERIVED
PMID: 28250047 (View on PubMed)

Related Links

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Other Identifiers

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18170313500000064

Identifier Type: -

Identifier Source: org_study_id

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