[Neck muscular tension due to repetitive work].
In our laboratory study 19 students effected 4 repetitive tasks of 70 min each. All four conditions had a motor task at the base and in addition two had to deal with discrimination. In the 2 tasks with discrimination, the electromyography of the neck muscles was distinctly higher than in the 2 other conditions. The tasks with discrimination were accompanied by a higher subjective tension, a lower heart rate variability and a slightly increased urinary excretion. The main cause for an augmentation in the muscle tonus might be the immobilisation of the neck.
D004576:Electromyography; D006339:Heart Rate; D006801:Humans; D009122:Muscle Hypertonia / Q000209:etiology*; D009333:Neck; D009784:Occupational Diseases
Tension musculaire de la nuque lors de travaux répétitifs.