title: A study of activity and body posture with the PiiX mobile body-adherent device.
abstract: Remote monitoring of in-home activity and body posture provides useful physiological parameters for understanding patient status and for making clinical judgment in patients living with heart failure. The Corventis PiiX is a mobile chest-adherent device that provides continuously recorded accelerometer data from patients in an in-home setting. In particular, a 3-axis accelerometer enables quantification of full body activity and body posture changes. In this paper, the prevalence of sedentary activity with subject age, the population-wide distribution of upright body posture and resting body posture, and a diagnostic for reduced activity levels and resting body posture is presented with retrospective analysis on a large nonrandomized dataset.
authors.forename: Niranjan
authors.initials: N
authors.lastname: Chakravarthy
authors.forename: Jonathan M
authors.initials: JM
authors.lastname: Engel
authors.forename: Abhi
authors.initials: A
authors.lastname: Chavan
authors.forename: Brion
authors.initials: B
authors.lastname: Finlay
authors.forename: Grant
authors.initials: G
authors.lastname: Nosbush
mesh_terms: D061725:Accelerometry / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D005260:Female; D006802:Human Activities; D006801:Humans; D008297:Male; D018670:Monitoring, Ambulatory / Q000295:instrumentation* / Q000379:methods; D011187:Posture / Q000502:physiology*; D012189:Retrospective Studies; D057185:Sedentary Behavior