[Posture and muscular fatigue during work with a book-keeping machine].

A survey on localized fatigue was carried out in 119 accounting machine operators. In 51 cases the dimensions of the working places and different characteristics of the body postures were measured. The incidence of localized fatigue symptoms was found to be related to the degree of ulnar deviation of the hand, to the angle of the elbow as well as to the angle of the head inclination.