Screen based keyboard operation: the adverse effects on the neural system.

Area of Science:

• Neuroscience
• Occupational Health
• Biomechanics

Background:

• Screen-based keyboard (SBK) operation is prevalent in modern workplaces.
• Potential impacts of repetitive keyboard use on neural system mechanics are not fully understood.
• Work-related neck and upper limb disorders are a significant occupational health concern.

Purpose of the Study:

• To investigate the effect of screen-based keyboard operation on neural system extensibility.
• To determine if SBK use is associated with reduced upper limb tension test (ULTT) range of motion.
• To explore the implications of altered neural mechanics in the context of work-related musculoskeletal disorders.

Main Methods:

• Utilized the radial nerve upper limb tension test (ULTT) to assess neural extensibility.
• Examined 25 female subjects (aged 17-55 years) divided into two groups: 15 SBK operators and 10 non-SBK operators (control).
• Measured mean glenohumeral abduction during the ULTT for both groups.

Main Results:

• SBK operators demonstrated significantly reduced mean glenohumeral abduction compared to the control group (27-30 degrees vs. 40 degrees).
• Statistical analysis confirmed a significant difference in neural extensibility between SBK operators and the control group.
• Findings suggest that SBK operation may negatively impact the normal mechanics of the neural system.

Conclusions:

• Screen-based keyboard operation appears to affect neural system extensibility.
• Increased neural tension associated with SBK use may be a contributing factor to work-related neck and upper limb disorders.
• Consideration of neural tension is warranted in the prevention and management of these occupational disorders.