Development and Pilot Test of a Virtual Reality Respiratory Biofeedback Approach

Area of Science:

• Biomedical Engineering
• Respiratory Physiology
• Virtual Reality Technology

Background:

• Breathing exercises with biofeedback offer advantages over those without.
• Traditional respiratory biofeedback methods are costly and labor-intensive.
• A need exists for accessible and user-friendly biofeedback systems.

Purpose of the Study:

• To develop and evaluate a novel virtual reality (VR) based respiratory biofeedback system.
• To assess the feasibility and efficacy of using VR hand controllers for capturing respiratory movements.
• To determine if this VR approach enhances breath awareness and promotes slow diaphragmatic breathing.

Main Methods:

• A randomized controlled laboratory study was conducted with 72 participants.
• Participants performed breathing exercises in VR, with or without the novel biofeedback.
• Respiratory biofeedback was achieved by tracking respiration-induced abdominal movements via VR hand controllers.

Main Results:

• The VR biofeedback system provided a satisfactory user experience.
• Participants using biofeedback demonstrated heightened breath awareness.
• The biofeedback group showed increased focus on slow diaphragmatic breathing and greater respiratory sinus arrhythmia.

Conclusions:

• The novel VR biofeedback approach is a low-cost, unobtrusive, and effective method for enhancing breath awareness.
• This system successfully promotes slow diaphragmatic breathing within VR-based exercises.
• Further research is warranted to explore broader applications and long-term effects.