Analysis

The Revised Upper Extremity Work Demands Scale (RUEWDS) is designed to assess the physical demands and workload associated with the use of the upper extremities, particularly the hands and arms, in occupational settings. The scale focuses on factors such as repetitive use, lifting, pressure, and other physical demands that may affect upper-limb functioning and health.

The assessment of these demands is particularly relevant in occupational health and ergonomics, as prolonged or repetitive physical strain may contribute to musculoskeletal discomfort, fatigue, reduced functional capacity, and impaired work performance. The RUEWDS can therefore provide a structured approach for identifying work-related physical demands that may increase the risk of upper-extremity strain.

Aim

The primary aim of the RUEWDS is to evaluate the physical demands placed on workers’ upper extremities and to improve understanding of how these demands may affect health, well-being, and occupational functioning. The scale also assists in identifying occupational risks associated with physically demanding work and can provide useful information for developing preventive and intervention strategies aimed at reducing musculoskeletal injuries and fatigue.

In addition, the scale may help identify occupational groups or specific work tasks characterized by increased mechanical or physical load, thereby supporting the implementation of ergonomic modifications and workplace health interventions.

Scoring

The RUEWDS consists of a series of statements rated on a Likert-type scale, typically ranging from 1 to 5. The items assess different aspects of upper-extremity work demands, including frequency of upper-limb use, repetitive movements, lifting, postural strain, resistance, and pressure or force exertion during occupational activities.

The total score is calculated by summing the individual item scores. Higher scores indicate greater levels of upper-extremity work demands and physical workload, whereas lower scores reflect lower exposure to these occupational physical demands.

Applications

The RUEWDS may be used in occupational health, ergonomics, physiotherapy, rehabilitation, and workplace safety research. It is particularly applicable to occupations involving repetitive manual movements, lifting or handling loads, use of tools, production-line activities, or prolonged force exertion with the hands and arms.

The scale may also be combined with measures of musculoskeletal pain, physical fatigue, functional capacity, sickness absence, and work performance. In this way, the RUEWDS may contribute both to the research assessment of occupational risk factors and to the development of targeted ergonomic and preventive interventions.

References

Devereux, J. J., & Buckle, P. (1999). The upper extremity work demands scale. Occupational Medicine, 49(4), 245–250.

Baur, H., & Côté, J. N. (2005). Measurement of physical demands and ergonomic risk factors in the workplace. International Journal of Industrial Ergonomics, 35(7), 571–583.

Liu, Y., & Wang, Y. (2008). Development and evaluation of a scale to assess upper extremity work demands and risks. Applied Ergonomics, 39(5), 642–652.

Eberhardt, J., & Johnson, W. (2007). Work-related musculoskeletal disorders: Measuring and addressing risk factors for upper extremities. Journal of Occupational Health Psychology, 12(3), 231–244.

Silva, C., & Santos, A. (2009). Assessing occupational risks and developing interventions for upper extremity injuries. Occupational Health Psychology Review, 15(2), 85–102.