title: Real-time correction of heart interbeat intervals.
abstract: Heart rate variability (HRV) is traditionally analyzed while a subject is in a controlled environment, such as at rest in a clinic, where it can be used as a medical indicator. This paper concerns analyzing HRV outside of controlled environments, such as on an actively moving person. We describe automated methods for inter-heartbeat interval (IBI) error detection and correction. We collected 124,998 IBIs from 18 subjects, undergoing a variety of active motions, for use in evaluating our methods. Two human graders manually labeled each IBI, evaluating 10% of the IBIs as having an error, which is a far greater error percentage than has been examined in any previous study. Our automated method had a 96% agreement rate with the two human graders when they themselves agreed, with a 49% rate of matching specific error corrections and a 0.01% false alarm rate.
authors.affiliation: Electrical and Computer Engineering Department, Clemson University, Clemson, SC 29634-0915, USA.
authors.forename: Jeromie
authors.initials: J
authors.lastname: Rand
authors.forename: Adam
authors.initials: A
authors.lastname: Hoover
authors.forename: Stephanie
authors.initials: S
authors.lastname: Fishel
authors.forename: Jason
authors.initials: J
authors.lastname: Moss
authors.forename: Jennifer
authors.initials: J
authors.lastname: Pappas
authors.forename: Eric
authors.initials: E
authors.lastname: Muth
mesh_terms: D000293:Adolescent; D000328:Adult; D016477:Artifacts; D001322:Autoanalysis; D015716:Electrocardiography, Ambulatory / Q000295:instrumentation / Q000379:methods*; D005189:False Positive Reactions; D006304:Health Status; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D013334:Students; D013647:Task Performance and Analysis; D013997:Time Factors