Department of Occupational Therapy, School of Health Professions, Tel Aviv University, P.O.B. 39040, Tel Aviv, 69978 Israel.
Ergonomics. 2012;55(12):1571-85. doi: 10.1080/00140139.2012.726654. Epub 2012 Oct 5.
Typing is associated with musculoskeletal disorders (MSDs) caused by multiple risk factors. This control study aimed to evaluate the efficacy of a workplace intervention for reducing MSDs among computer workers. Sixty-six subjects with and without MSD were assigned consecutively to one of three groups: ergonomics intervention (work site and body posture adjustments, muscle activity training and exercises) accompanied with biofeedback training, the same ergonomics intervention without biofeedback and a control group. Evaluation of MSDs, body posture, psychosocial status, upper extremity (UE) kinematics and muscle surface electromyography were carried out before and after the intervention in the workplace and the motion lab. Our main hypothesis that significant differences in the reduction of MSDs will exist between subjects in the study groups and controls was confirmed (χ(2) = 13.3; p = 0.001). Significant changes were found in UE kinematics and posture as well. Both ergonomics interventions effectively reduced MSD and improved body posture.
This study aimed to test the efficacy of an individual workplace intervention programme among computer workers by evaluating musculoskeletal disorders (MSDs), body posture, upper extremity kinematics, muscle activity and psychosocial factors were tested. The proposed ergonomics interventions effectively reduced MSDs and improved body posture.
本研究旨在通过评估肌肉骨骼疾病（MSD）、姿势、上肢运动学、肌肉活动和心理社会因素，测试针对计算机工作者的个体工作场所干预计划的效果。
将 66 名患有和不患有 MSD 的受试者连续分配到三组：一组进行工效学干预（工作场所和身体姿势调整、肌肉活动训练和锻炼）并辅以生物反馈训练，一组进行相同的工效学干预但不进行生物反馈，一组为对照组。在工作场所和运动实验室中，分别在干预前后对 MSD、姿势、心理社会状态、上肢运动学和肌肉表面肌电图进行评估。
我们的主要假设是研究组和对照组之间 MSD 减少的显著差异存在（χ(2) = 13.3；p = 0.001），这一假设得到了证实。上肢运动学和姿势也发生了显著变化。两种工效学干预均能有效减少 MSD 并改善姿势。
本研究通过评估肌肉骨骼疾病（MSD）、姿势、上肢运动学、肌肉活动和心理社会因素，测试了针对计算机工作者的个体工作场所干预计划的效果。提出的工效学干预措施能有效减少 MSD 并改善姿势。
