title: Non-restrictive heart rate monitoring using an acceleration sensor.
abstract: Daily long-term monitoring of heart rates is important for health management. An analysis of heart rate variability can facilitate the early discovery of illnesses. In this study, we paid attention to the method of measuring resting heart rate over long term. An acceleration sensor was set inside the down kilt as it opposing to subject's left chest. Mechanical vibration from heart activity is carried to the acceleration sensor through the down quilt. As a result, periodic vibration was measured successfully and this vibration was proved to be in high correlation with the R wave of ECG. The same results were obtained even in case of lying in a left lateral position.
authors.affiliation: Osaka University Graduate School of Medicine, Division of health Sciences, Suita-shi, Osaka, Japan. shima@sahs.med.osaka-u.ac.jp
authors.forename: Shima
authors.initials: S
authors.lastname: Okada
authors.forename: Yoshihisa
authors.initials: Y
authors.lastname: Fujiwara
authors.forename: Masashi
authors.initials: M
authors.lastname: Yasuda
authors.forename: Yuko
authors.initials: Y
authors.lastname: Ohno
authors.forename: Masaaki
authors.initials: M
authors.lastname: Makikawa
mesh_terms: D000054:Acceleration; D000328:Adult; D015374:Biosensing Techniques; D004562:Electrocardiography / Q000379:methods; D004867:Equipment Design; D006339:Heart Rate; D006801:Humans; D008297:Male; D008962:Models, Theoretical; D008991:Monitoring, Physiologic / Q000295:instrumentation* / Q000379:methods*; D011187:Posture; D015203:Reproducibility of Results; D012890:Sleep; D016683:Supine Position; D013997:Time Factors