Effects of negatively sloped keyboard wedges on risk factors for upper extremity work-related musculoskeletal disorders and user performance

Article Abstract:

The effects of negative keyboard angles on objective physiological and subjective measures were examined in addition to the user performance including the forearm muscle activity and perceived discomfort. The analysis suggests that the suitable angle varies with the individual, though the lower angles provide various postural benefits, reduces muscle activity and improves the typing performance in comparison to the standard keyboard.

Causes of, Work-related injuries, Work related injuries

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Effects of psychosocial and individual factors on physiological risk factors for upper extremity musculoskeletal disorders while typing

Article Abstract:

The extent to which mental workload and time pressure affect the perception of workload as well as the physiological responses of the distal upper extremity were quantified in a study undertaken to understand how work-related musculoskeletal disorder (WMSD) developed. Results established the causal connection between upper extremity WMSD and psychosocial risk factors.

Analysis, Physiological aspects, Development and progression, Electromyography, Typewriting

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Effect of horizontal position of the computer keyboard on upper extremity posture and muscular load during computer work

Article Abstract:

A study hypothesizes that the wrist approaches more of a neutral posture as the keyboard distance from the edge of the work surface increases, requiring less ulnar deviation and forearm muscle activity.

Health Care and Social Assistance, HEALTH SERVICES, Employee Health & Safety, Health aspects, Occupational health and safety, Occupational safety and health, Forearm

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