A smart bra with integrated textile sensors and edge-AI provides real-time, breath-adherent respiratory guidance. This could improve running experiences by reducing discomfort and promoting rhythmic breathing, which in turn may enhance vitality.
Vitality is linked to activation and positive emotions. Because controlled breathing and running have measurable psychophysiological effects on mood, focusing on breathing during running could be a key to sustaining sports motivation. The bra design can be adapted into a chest belt to make it accessible for all users, not just women.
RunRhythm Detection and Breathing Guidance
The RunRhythm smartphone app enhances step-adherent breathing guidance by coupling breath to steps. Bra4Vit goes further by using breath-adherent guidance: sounds fade in and out based on the user’s breathing regularity. This means the system intervenes only when necessary, intuitively encouraging more regular breathing.
Phoneless Experience via Edge-AI in Smart Textiles
A phoneless experience increases user acceptance of smart textile technologies in sports, fitness, and well-being. Users avoid smartphone distractions because alternative interaction methods, such as integrated capacitive touch buttons and intuitive auditory feedback, are implemented. However, deploying AI models on microcontrollers in embedded systems remains challenging due to the limited power, storage, and memory resources of wearable electronics. Edge-AI implementation could unlock new opportunities for auditory breathing guidance by enabling zero-delay breath phase detection. The seamless integration of technology is the primary hurdle in transitioning smart textiles from research to market.
Scalability and User Comfort
Textile sensors are integrated during garment production via warp knitting, which enables scalable smart garment production with high user acceptance. Insulated conductive yarns eliminate the need for foil encapsulation of conductive tracks, improving wearability. The technology remains invisible in the fabric except for the attached on-body unit. While sweat robustness is reduced with this approach, it remains sufficient for running sessions with sweat exposure.
From Sports to Health
Is Bra4Vit limited to running? Not necessarily. Initial experiments in health applications where rhythmic breathing supports relaxation during walking show potential.