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  • Title: Which trunk inclination directions best predict multidirectional-seated limits of stability among individuals with spinal cord injury?
    Author: Gauthier C, Gagnon D, Jacquemin G, Duclos C, Masani K, Popovic MR.
    Journal: J Spinal Cord Med; 2012 Sep; 35(5):343-50. PubMed ID: 23031171.
    Abstract:
    OBJECTIVE: To determine which trunk inclination directions most accurately predict multidirectional-seated limits of stability among individuals with spinal cord injury (SCI). DESIGN: Predictive study using cross-sectional data. SETTING: Pathokinesiology Laboratory. PARTICIPANTS: Twenty-one individuals with complete or incomplete sensorimotor SCI affecting various vertebral levels participated in this study. INTERVENTIONS: 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. OUTCOMES MEASURES: 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). CONCLUSION: Multidirectional-seated postural stability can be predicted almost perfectly by evaluating trunk inclinations performed toward the anterior, left postero-lateral, and right lateral directions.
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