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[A device for measuring body posture during work].

The study was aimed at designing, performing and testing the tool enabling observation of the duration of the trunk inclination under the fibular plane and specific angles in professional work. Admittedly, the most ethiopathogenetic factor of an algesic syndrome in the lower part of the spine is the load resulting mainly from long-lasting trunk anteversion. The tool consists of a gravitating inclination sensor which switches on, with the programmed inclination angle, the quartz time meter. This tool is fastened to the examined patient by webbings to the level of the lumbar spine in the axillary left middle line. The results obtained due to this tool reflect the duration of trunk inclination under different angles at work in different workstations. It was found that the observations made due to that tool, when its inclination sensor is set at 10 degrees, 20 degrees and 30 degrees (forward), should be sufficient to indicate the workstations with static load of the lower part of the spine due to long-lasting trunk anteversion. The simplicity of the studies performed by means of that tool, as well as the fact that those studies are convenient (both for the physicians and patients) indicate the advisability of an extensive use of that tool (also in improved versions) in ergonomic practice.