title: Effects of upper limb positions and weight support roles on quasi-static seated postural stability in individuals with spinal cord injury.
abstract: Seated postural stability has not been studied extensively in individuals with spinal cord injury (SCI). The main purpose of this study was to compare the effects of upper limb (U/L) positions and U/L weight support roles on quasi-static postural stability between individuals with SCI and healthy controls. Fourteen individuals with SCI and 14 healthy controls sat on an instrumented seat with their feet resting on force plates and randomly maintained five short-sitting positions for 60s with or without hand support. Center-of-pressure (COP) measures based on displacement and frequency series were computed. Individuals with SCI exhibited greater mean COP displacement and velocity measures compared to healthy controls, as well as lower COP frequency measures, irrespective of the U/L positions and weight support roles, confirming reduced stability and a difference in preferential postural regulation strategies. The use of U/L support is a compensatory strategy that influences seated stability in individuals with SCI.
authors: Pathokinesiology Laboratory, Centre for Interdisciplinary Research in Rehabilitation of Greater Montreal, Montreal, QC, Canada.
authors: Murielle
authors: M
authors: Grangeon
authors: Dany
authors: D
authors: Gagnon
authors: Cindy
authors: C
authors: Gauthier
authors: Géraldine
authors: G
authors: Jacquemin
authors: Kei
authors: K
authors: Masani
authors: Milos R
authors: MR
authors: Popovic
mesh_terms: D000222:Adaptation, Physiological; D000328:Adult; D000368:Aged; D001696:Biomechanical Phenomena; D016022:Case-Control Studies; D005260:Female; D006112:Gravitation; D006801:Humans; D015601:Injury Severity Score; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000502:physiology*; D004856:Postural Balance / Q000502:physiology*; D011187:Posture / Q000502:physiology*; D011434:Proprioception / Q000502:physiology; D012016:Reference Values; D013119:Spinal Cord Injuries / Q000175:diagnosis / Q000534:rehabilitation*; D034941:Upper Extremity / Q000502:physiology*; D016474:Weight-Bearing / Q000502:physiology; D055815:Young Adult