Comper Maria Luiza Caires, Dennerlein Jack Tigh, Evangelista Gabriela Dos Santos, Rodrigues da Silva Patricia, Padula Rosimeire Simprini
Masters and Doctoral Programs in Physical Therapy, Universidade Cidade de São Paulo, São Paulo, Brazil.
Department of Physical Therapy, União Metropolitana de Ensino e Cultura, Itabuna, Brazil.
Occup Environ Med. 2017 Aug;74(8):545-552. doi: 10.1136/oemed-2016-104077. Epub 2017 Mar 1.
Job rotation is an organisational strategy widely used on assembly lines in manufacturing industries to mitigate workers' exposure so as to prevent musculoskeletal disorders. This study aimed to evaluate the effectiveness of job rotation for reducing working hours lost due to sick leave resulting from musculoskeletal diseases.
The design consisted of a 1-year cluster randomised controlled trial with a blinded assessor. Production sectors of the textile industry were randomised to intervention and control groups. Both groups received ergonomic training. The intervention group performed a job rotation programme. The primary outcome measure was number of working hours lost due to sick leave as a result of musculoskeletal disease (ICD-10). The secondary outcome measures were musculoskeletal symptoms (Yes/No), risk factors for musculoskeletal diseases (0-10), psychosocial factors and fatigue (0-100), general health (0-100), and productivity (0-10). All secondary outcomes were measured at baseline and 12-month follow-up.
At the 12-month follow-up, both groups showed an increase in the number of working hours lost due to sick leave for musculoskeletal disease. There was no significant difference between the job rotation intervention group (mean deviation -5.6 hours, 95% CI -25.0 to 13.8) at the 12-month follow-up and the control group. There were no significant differences between groups for the secondary outcomes (p>0.05).
The job rotation programme was not effective in reducing the number of working hours lost due to sick leave, decreasing the prevalence of musculoskeletal symptoms, or improving perception of musculoskeletal pain and workplace risk factors, psychosocial risk factors and productivity.
NCT01979731.
工作轮换是制造业装配线上广泛采用的一种组织策略，用于减少工人接触，以预防肌肉骨骼疾病。本研究旨在评估工作轮换在减少因肌肉骨骼疾病病假导致的工时损失方面的有效性。
该设计为一项为期1年的整群随机对照试验，评估者为盲法。纺织行业的生产部门被随机分为干预组和对照组。两组均接受了人体工程学培训。干预组实施了工作轮换计划。主要结局指标是因肌肉骨骼疾病（国际疾病分类第10版）病假导致的工时损失数量。次要结局指标包括肌肉骨骼症状（是/否）、肌肉骨骼疾病风险因素（0至10）、社会心理因素和疲劳（0至100）、总体健康状况（0至100）以及生产力（0至10）。所有次要结局指标均在基线和12个月随访时进行测量。
在12个月随访时，两组因肌肉骨骼疾病病假导致的工时损失数量均有所增加。工作轮换干预组在12个月随访时（平均偏差-5.6小时，95%置信区间-25.0至13.8）与对照组之间无显著差异。次要结局指标在两组之间无显著差异（p>0.05）。
工作轮换计划在减少因病假导致的工时损失、降低肌肉骨骼症状患病率或改善对肌肉骨骼疼痛及工作场所风险因素、社会心理风险因素和生产力的认知方面均无效。
NCT01979731。
