Mortensen Peter, Larsen Anders I, Zebis Mette K, Pedersen Mogens T, Sjøgaard Gisela, Andersen Lars L
Novozymes A/S, Medical Centre, 2880 Bagsværd, Denmark.
Arthroscopic Centre Amager & Gait Analysis Laboratory, Copenhagen University Hospital, 2650 Hvidovre, Denmark.
Biomed Res Int. 2014;2014:845851. doi: 10.1155/2014/845851. Epub 2014 Mar 10.
This study investigated long-term effects and implementation processes of workplace strength training for musculoskeletal disorders.
333 and 140 laboratory technicians from private and public sector companies, respectively, replied to a 3-year follow-up questionnaire subsequent to a 1-year randomized controlled trial (RCT) with high-intensity strength training for prevention and treatment of neck, shoulder, and arm pain. Being a natural experiment, the two participating companies implemented and modified the initial training program in different ways during the subsequent 2 years after the RCT.
At 3-year follow-up the pain reduction in neck, shoulder, elbow, and wrist achieved during the first year was largely maintained at both companies. However, the private sector company was rated significantly better than the public sector company in (1) training adherence, (2) training culture, that is, relatively more employees trained at the workplace and with colleagues, (3) self-reported health changes, and (4) prevention of neck and wrist pain development among initially pain-free employees.
This natural experiment shows that strength training can be implemented successfully at different companies during working hours on a long-term basis with lasting effects on pain in neck, shoulder, and arm.
本研究调查了工作场所力量训练对肌肉骨骼疾病的长期影响及实施过程。
分别来自私营和公共部门公司的333名和140名实验室技术人员，在一项为期1年的随机对照试验（RCT）之后，回复了一份为期3年的随访问卷。该试验采用高强度力量训练来预防和治疗颈部、肩部和手臂疼痛。作为一项自然实验，两家参与公司在RCT之后的两年里以不同方式实施并修改了初始训练计划。
在3年随访时，两家公司在第一年实现的颈部、肩部、肘部和腕部疼痛减轻情况在很大程度上得以维持。然而，在以下方面，私营部门公司的评分显著高于公共部门公司：（1）训练依从性；（2）训练文化，即相对更多的员工在工作场所与同事一起接受训练；（3）自我报告的健康变化；（4）在最初无疼痛的员工中预防颈部和腕部疼痛的发生。
这项自然实验表明，力量训练可以在不同公司的工作时间内长期成功实施，并对颈部、肩部和手臂疼痛产生持久影响。
