title: Combined sagittal and coronal plane postural stability model.
abstract: We present a preliminary study of combined anterior posterior (AP) and medial lateral (ML) sway assuming a classic inverted pendulum with included subtalar movement. Based on a feedback control posture model in the sagittal plane as presented by Maurer and Peterka, we have investigated parameters needed to model ML sway components. Center of pressure (COP) data was collected from a population of 8 normal adults (age 18 to 30 years) using a dual AMTI force plate system. Fourteen different sway metrics were calculated. The collected data was successfully compared to numerous simulations of the model where model parameters were varied and the goal was to reproduce both AP and ML components.
authors.affiliation: Orthopaedic and Rehabilitation Engineering Center, Milwaukee, WI, USA.
authors.forename: K D Bustamante
authors.initials: KD
authors.lastname: Valles
authors.forename: J M
authors.initials: JM
authors.lastname: Schneider
authors.forename: J T
authors.initials: JT
authors.lastname: Long
authors.forename: S A
authors.initials: SA
authors.lastname: Riedel
authors.forename: M J
authors.initials: MJ
authors.lastname: Johnson
authors.forename: G F
authors.initials: GF
authors.lastname: Harris
mesh_terms: D000293:Adolescent; D000328:Adult; D000842:Ankle; D001696:Biomechanical Phenomena / Q000295:instrumentation / Q000379:methods*; D005246:Feedback; D006801:Humans; D008954:Models, Biological; D009068:Movement; D004856:Postural Balance; D011187:Posture; D011312:Pressure; D012815:Signal Processing, Computer-Assisted; D019415:Torque; D014785:Vision, Ocular; D014796:Visual Perception