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Biomechanics for the assessment of sensory-motor interactions

The impact of work related musculo-skeletal disorders (WMSD) on social insurance, absenteeism, productivity and well-being is substantial. Despite a reduction of physically demanding occupations, 62% of the European working population still mentioned exposure to repetitive movement and 45% reported working in tiring/painful conditions for at least 25% of their working time (Fourth European Working Conditions Survey 2005, 2007). This makes the prevention of WMSD one of the main challenges of the century. A way to gain insight about the interactions between fatigue/pain and the motor system is to adopt a multimodal approach assessing both sensory (discomfort, pain and deep structures sensitivity) and motor changes (including physiological and biomechanical assessments). The goal of this paper will be to present data describing how muscle fatigue/pain interacts with the motor system in occupational settings.