ABSTRACT
This chapter deals with work in which movements are repeated over and over again, at the same time as requirements are imposed for precision in movement and the muscles are used with considerable force. Janis’ job as a meat-dresser in a slaughterhouse is a good example of this type of work. The chapter also illustrates how
5.4.4 Degrees of Freedom and Redundancy in Motor Systems ................124 5.4.5 Restrictions on the Utilization of the Number of Degrees of Freedom ........................................................................................ 125 5.4.6 Muscle Synergies .............................................................................. 126 5.4.7 Sensory Motor Function in Repetitive Movements .......................... 127 5.4.8 Direct Responses in Exposure to Highly Repetitive Movements ...................................................................... 128
5.5 Pathophysiological Mechanisms in Exposure to Highly Repetitive Movements .................................................................................. 131 5.5.1 Changes in Work Allocation in the Muscle ...................................... 131 5.5.2 Tendons and Nerves .......................................................................... 134
5.6 Consequences of Repetitive Loads among the Population ........................... 134 5.7 Risk Assessment ........................................................................................... 135 5.8 What Measures Can be Taken to Minimize the Risks of Repetitive Work? ...................................................................................... 136 5.9 What do Laws, Regulations, and Provisions Have to Say? .......................... 137 5.10 Summary ...................................................................................................... 138 References .............................................................................................................. 138 Further Reading ..................................................................................................... 139
repeated movements, and the requirements for precision and force, are combined during the entire day or parts of the working day.
