Comparing learning during the familiarization phase with a slanted mouse and a vertical mouse when performing a repeated pointing-clicking task.

. Vertical and slanted mouse models have been developed to reduce forearm pronation. Discomfort, performance and stresses have been analyzed with these mice in previous studies but not learning during the familiarization phase.

Effects of mouse slant and desktop position on muscular and postural stresses, subject preference and performance in women aged 18-40 years.

This study compared muscular and postural stresses, performance and subject preference in women aged 18-40 years using a standard mouse, a vertical mouse and a slanted mouse in three different computer workstation positions. Four tasks were analysed: pointing, pointing-clicking, pointing-clicking-dragging and grasping-pointing the mouse after typing. Flexor digitorum superficialis (FDS) and extensor carpi radialis (ECR) activities were greater using the standard mouse compared to the vertical or slanted mouse.

Incidence of Stress and Psychosocial Factors on Musculoskeletal Disorders in CAD and Data Entry.

A comparative study concerning the incidence of psychosocial factors and stress on musculoskeletal disorders (MSD) was conducted on 30 males carrying out a computer-aided design (CAD) task and on 26 females carrying out a data entry task. Both populations completed a questionnaire concerning complaints of MSD, stress symptoms, psychosocial factors and working life. This study showed that the work context was more favourable to the data entry task operators than to the CAD task operators.

Biomechanical stresses in computer-aided design and in data entry.

A study of the risk factors of musculoskeletal disorders (MSDs) of the upper limbs was carried out on 2 populations, 1 performing a computer-aided design (CAD) task and the other performing a data entry task. A questionnaire on MSD complaints and working life was completed by a sample of each population. Biomechanical measurements of the forces, the angles, and the repetitiveness of movements of the upper limbs were carried out on some operators in each sample.

[Job tasks and occupational diseases in data processing].

The industrial organisational model of repetitive work, a consequence of Taylor type rationalization, is encountered in datra computerized processing sectors, especially for data input tasks, with the same effects: pressure of time, monotony, insatisfying work. a group of data collecting female operators was investigated and compared to a group of female operations whose activities included computer dialoguing, a more complex task. Recordings of eye movements for the analysis of perceptive and cognitive aspects of the task, as well as questionnaire concerning the effect of factors such as stress in their lives, and the possible presence of psychosmatic and nervous symptoms, were used.