http://repository.lib.vpa.ac.lk/handle/123456789/175 2026-04-21T12:41:33Z 2026-04-21T12:41:33Z Herath, Samitha S. Kusumi, Akira Note, Yosuke Nakamura, Etsuhisa Nozawa, Akio Nomura, Shusaku http://repository.lib.vpa.ac.lk/handle/123456789/221 2018-11-07T09:50:48Z 2017-11-01T00:00:00Z

Enhancing cardiac parasympathetic nervous activity using a posture respiration ambient biofeedback system : a pilot study Herath, Samitha S.; Kusumi, Akira; Note, Yosuke; Nakamura, Etsuhisa; Nozawa, Akio; Nomura, Shusaku A respiration–posture feedback system was developed to control breathing involuntarily. A small air chamber placed under a subject’s back deflates and inflates to make a subject’s upper body move vertically while lying on a bed. By regulating the deflation/inflation of the air chamber in synchronization with actual respiration, the subject’s respiration was successfully lengthened and deepened. The modulation of the respiration acted as a physiological sedative for the subject as the heart rate variability index suggested that the subject’s parasympathetic nervous system activity was enhanced.

2017-11-01T00:00:00Z Herath, Samitha S. Hayakawa, Kazuki Sakai, Osamu Sekiya, Ryoma Nomura, Shusaku http://repository.lib.vpa.ac.lk/handle/123456789/220 2018-11-07T09:49:09Z 2018-01-01T00:00:00Z

Efficacy of Involuntary Deep Breathing by Postural-Respiration Feedback Control System Herath, Samitha S.; Hayakawa, Kazuki; Sakai, Osamu; Sekiya, Ryoma; Nomura, Shusaku Attached

2018-01-01T00:00:00Z