Effects of cycling while typing on upper limb and performance characteristics

Area of Science:

• Ergonomics and Occupational Health
• Exercise Physiology
• Musculoskeletal Biomechanics

Background:

• Workplace sedentarism is a growing health concern.
• Active computer workstations aim to mitigate sedentary behavior.
• The effects of these workstations on upper limb musculoskeletal health are not well understood.

Purpose of the Study:

• To investigate the impact of active computer workstations (Bike-and-Type) on upper limb musculoskeletal responses.
• To compare the effects of low versus high cycling intensities during computer work.

Main Methods:

• Participants engaged in 60-minute laptop-based Bike-and-Type sessions at two cycling intensities (LOW, HIGH).
• Measurements included muscle blood flow, sensitivity and pain thresholds (upper trapezius, wrist extensors), and typing performance.
• Discomfort levels were also monitored throughout the sessions.

Main Results:

• Neck/shoulder discomfort increased over time and was higher at HIGH intensity.
• Muscle blood flow in the trapezius and wrist extensors was elevated during HIGH intensity cycling.
• Wrist blood flow increased over time, and trapezius sensitivity thresholds decreased.
• Typing speed was higher at HIGH intensity and improved over time.
• No significant effects were observed on pressure pain thresholds.

Conclusions:

• Bike-and-Type sessions can enhance typing performance, potentially facilitating muscle regeneration.
• The intensity of cycling during these active workstations influences both musculoskeletal responses and typing efficiency.
• Higher intensity may increase discomfort but also enhances muscle blood flow and performance.