Effects of virtual heights, dual-tasking, and training on static postural stability

Area of Science:

• Ergonomics and Human Factors
• Virtual Reality Applications
• Biomechanics and Motor Control

Background:

• Falls are a significant risk in high-altitude work and complex tasks.
• Postural stability is crucial for preventing falls, especially in challenging environments.
• Virtual reality (VR) offers a safe platform to simulate hazardous conditions like heights.

Purpose of the Study:

• To investigate the effects of virtual heights and dual-tasking (DT) on static postural stability.
• To assess the impact of training on postural control in simulated high-altitude virtual environments (VE).
• To evaluate VR as a potential tool for balance training in ergonomics.

Main Methods:

• Twenty-eight participants completed balance assessments in seven virtual environments (ground to high altitude/edge simulations).
• Balance was measured during single-tasking (ST) and dual-tasking (DT) over three days.
• A 7 (VE) x 3 (DAY) x 2 (TASK) factorial repeated measures ANOVA analyzed postural sway.

Main Results:

• Increased postural sway was observed at higher virtual altitudes (A3) and edge environments (E1).
• Postural stability decreased on Day 1 and significantly worsened during dual-tasking (DT).
• Training over three days led to improvements in static postural stability.

Conclusions:

• Virtual reality effectively simulates altitude challenges, impacting postural stability.
• Dual-tasking significantly compromises balance, particularly in simulated high-risk environments.
• VR-based balance training shows promise for enhancing postural control in ergonomic contexts.