title: iBalance-ABF: a smartphone-based audio-biofeedback balance system.
abstract: This paper proposes an implementation of a Kalman filter, using inertial sensors of a smartphone, to estimate 3-D angulation of the trunk. The developed system monitors the trunk angular evolution during bipedal stance and helps the user to improve balance through a configurable and integrated auditory-biofeedback (ABF) loop. A proof-of-concept study was performed to assess the effectiveness of this so-called iBalance-ABF--smartphone-based audio-biofeedback system--in improving balance during bipedal standing. Results showed that young healthy individuals were able to efficiently use ABF on sagittal trunk tilt to improve their balance in the medial-lateral direction. These findings suggest that the iBalance-ABF system as a telerehabilitation system could represent a suitable solution for ambient assisted living technologies.
authors.affiliation: FRE 3405 AGIM Laboratory, CNRS-UJF-UPMFEPHE, 38706 La Tronche, France. celine.franco@imag.fr
authors.forename: C
authors.initials: C
authors.lastname: Franco
authors.forename: A
authors.initials: A
authors.lastname: Fleury
authors.forename: P Y
authors.initials: PY
authors.lastname: Gumery
authors.forename: B
authors.initials: B
authors.lastname: Diot
authors.forename: J
authors.initials: J
authors.lastname: Demongeot
authors.forename: N
authors.initials: N
authors.lastname: Vuillerme
mesh_terms: D000328:Adult; D000465:Algorithms; D001676:Biofeedback, Psychology / Q000502:physiology*; D040421:Cell Phone; D005260:Female; D006801:Humans; D008297:Male; D018670:Monitoring, Ambulatory / Q000295:instrumentation* / Q000379:methods*; D004856:Postural Balance / Q000502:physiology*; D012815:Signal Processing, Computer-Assisted