Relationship between abdominal excursion and ventilation volume and verification of respiratory biofeedback effects by visualization of abdominal excursion motion measurement waveforms. - Daisuke Tashiro; Yutaro Oki; Tohmi Osaki; Shoei Ono; Kaede Takeuchi; Hironobu Kakihana; Yosuke Morimoto (Biomed. Signal Process. Control., 2025)