There was strong evidence for one intervention category , resistance training , leading to the recommendation : Implementing a workplace-based resistance training exercise programme can help prevent and manage UEMSD and symptoms .
The synthesis also revealed moderate evidence for stretching programmes , mouse use feedback and forearm supports in preventing UEMSD or symptoms .
There was also moderate evidence for no benefit for EMG biofeedback , job stress management training , and office workstation adjustment for UEMSD and symptoms .
The burden of disabling musculoskeletal pain and injuries ( musculoskeletal disorders , MSDs ) arising from work-related causes in many workplaces remains substantial .
There is little consensus on the most appropriate interventions for MSDs .
Our objective was to up date a systematic review of workplace-based interventions for preventing and managing  upper extremity MSD ( UEMSD ) .
Effect of an intervention addressing working technique on the biomechanical load of the neck and shoulders among hairdressers.
The purpose of this study was to describe , and analyse the effect of an intervention on , the biomechanical workload in the neck and shoulder region of female hairdressers . Arm elevation was measured by inclinometers and muscular load of m. trapezius by electromyography . The intervention comprised working technique recommendations , e.g. to work with less elevated arms and more relaxed muscles . The subjects were r and omised between two different intensity levels of the intervention , one with written information only and the other with additional personal follow-up . The effect of the intervention was evaluated after 1 - 2 months . The hairdressers worked with their arms elevated 60 degrees or more for approximately 13 % of the total working time and 16 % during the specific hairdressing tasks . The intervention group including personal follow-up instructions had a reduction in workload from 4.0 % to 2.5 % of hairdressing time with highly elevated right upper arm , i.e. above 90 degrees . No effect was detected on muscular load or neck and shoulder symptoms after the intervention
There was strong evidence for one intervention category , resistance training , leading to the recommendation : Implementing a workplace-based resistance training exercise programme can help prevent and manage UEMSD and symptoms .
The synthesis also revealed moderate evidence for stretching programmes , mouse use feedback and forearm supports in preventing UEMSD or symptoms .
There was also moderate evidence for no benefit for EMG biofeedback , job stress management training , and office workstation adjustment for UEMSD and symptoms .
The burden of disabling musculoskeletal pain and injuries ( musculoskeletal disorders , MSDs ) arising from work-related causes in many workplaces remains substantial .
There is little consensus on the most appropriate interventions for MSDs .
Our objective was to up date a systematic review of workplace-based interventions for preventing and managing  upper extremity MSD ( UEMSD ) .