Validity and inter-observer reliability of subjective hand-arm vibration assessments.

Exposure to mechanical vibrations at work (e.g., due to handling powered tools) is a potential occupational risk as it may cause upper extremity complaints.

HARM overview and its application: some practical examples.

The Hand Arm Risk Assessment Method (HARM 1.0) has been developed for occupational health officers to perform risk assessments of developing arm, neck or shoulder pain during hand arm tasks. The tool can also help in finding solutions for risk reduction and estimating their effect on the risk level.

New risk assessment tools in The Netherlands.

In this paper an introduction to and description of the risk assessment tools that are freely available for companies in The Netherlands is given. It is explained in what way the tools can and should be used and how the level I checklist for physical load and the level II instruments are related. The two instruments that -in 2011- made this 'Dutch toolbox' complete, are the checklist physical load and the Working Posture Risk Assessment Tool (WRAP 1.

The effect of a feedback signal in a computer mouse on hovering behaviour, productivity, comfort and usability in a field study.

The aim of this study was to determine the effect of a tactile feedback signal on hovering behaviour, productivity, usability and comfort after 1 week of using an experimental mouse. In a randomized controlled trial, a regular computer mouse was compared to a new developed mouse with a tactile, vibrating feedback signal to prevent unnecessary hovering above the computer mouse. According to this study, participants do decrease their hovering behaviour when using a mouse with tactile feedback.

The effects of shoulder load and pinch force on electromyographic activity and blood flow in the forearm during a pinch task.

The object of the current study was to determine whether static contraction of proximal musculature has an effect on the blood flow more distally in the upper extremity. Static contractions of muscles in the neck shoulder region at three levels (relaxed, shoulders elevated and shoulders elevated loaded with 4.95 kg each) were combined with intermittent pinch forces at 0, 10 and 25% of the maximum voluntary contraction (MVC).