title: Which trunk inclination directions best predict multidirectional-seated limits of stability among individuals with spinal cord injury?
abstract: OBJECTIVE
  To determine which trunk inclination directions most accurately predict multidirectional-seated limits of stability among individuals with spinal cord injury (SCI).
  
  
  METHODS
  Predictive study using cross-sectional data.
  
  
  METHODS
  Pathokinesiology  Laboratory.
  
  
  METHODS
  Twenty-one individuals with complete or incomplete sensorimotor SCI affecting various vertebral levels participated in this study.
  
  
  METHODS
  Participants were instructed to lean their trunk as far as possible in eight directions,  separated by 45° intervals, while seated on an instrumented chair with their feet positioned on force plates.
  
  
  METHODS
  Eight direction-specific stability indices (DSIs) were used to define an overall stability index (OSI) (limits of stability).
  
  
  RESULTS
  All DSIs significantly correlated with the OSI (r = 0.816-0.925). A protocol that only tests the anterior, left postero-lateral, and right lateral trunk inclinations accurately predicts multidirectional-seated postural stability (r(2) = 0.98;  P < 0.001).
  
  
  CONCLUSIONS
  Multidirectional-seated postural stability can be predicted almost perfectly by evaluating trunk inclinations performed toward the anterior, left postero-lateral, and right lateral directions.
authors.affiliation: Pathokinesiology Laboratory, Center for Interdisciplinary Research in Rehabilitation of Greater Montreal, Institut de Réadaptation Gingras-Lindsay-de-Montréal, Montreal, Canada.
authors.forename: Cindy
authors.initials: C
authors.lastname: Gauthier
authors.forename: Dany
authors.initials: D
authors.lastname: Gagnon
authors.forename: Géraldine
authors.initials: G
authors.lastname: Jacquemin
authors.forename: Cyril
authors.initials: C
authors.lastname: Duclos
authors.forename: Kei
authors.initials: K
authors.lastname: Masani
authors.forename: Milos R
authors.initials: MR
authors.lastname: Popovic
mesh_terms: D000328:Adult; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008954:Models, Biological; D026741:Physical Therapy Modalities; D004856:Postural Balance / Q000502:physiology; D011187:Posture / Q000502:physiology*; D011237:Predictive Value of Tests; D013119:Spinal Cord Injuries / Q000503:physiopathology* / Q000534:rehabilitation*; D060726:Torso / Q000502:physiology*; D055815:Young Adult