Postural control in quiet standing in patients with psychotic disorders |
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| Authors: | Ann-Katrin Stensdotter Håvard W Lorås John Christian Fløvig Mats Djupsjöbacka |
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| Institution: | 1. Faculty of Health Education and Social Work, Physiotherapy, Sør-Trøndelag University College, Trondheim, Norway;2. Department of Neuroscience, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway;3. Centre for Musculoskeletal Research, University of Gävle, Sweden;1. FAMILY: A Jockey Club Initiative for a Harmonious Society, School of Public Health, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong;2. Institute of Human Performance, University of Hong Kong, Hong Kong;1. Center for Sensory-Motor Interaction, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark;2. The CAPES Foundation, Brazilian Education Ministry, Brasilia, Brazil;3. Department of Neurorehabilitation Engineering, Bernstein Focus Neurotechnology Göttingen, Bernstein Center for Computational Neuroscience, University Medical Center Göttingen, Georg-August University, Göttingen, Germany;1. Department of Rehabilitation Sciences – Musculoskeletal Rehabilitation Research Group, KULeuven, Belgium;2. Division of Musculoskeletal Disorders, Multidisciplinary Diabetic Foot Clinic, University Hospitals Leuven, KULeuven, Belgium;3. Laboratory for Clinical Motion Analysis, University Hospital Pellenberg, KULeuven, Belgium;4. Haute Ecole Léonard De Vinci, Institut D’Enseignement Supérieur Parnasse Deux-Alice, Division of Podiatry, Bruxelles, Belgium;5. Department of Rehabilitation Sciences and Physiotherapy, Research Group: Musculoskeletal Rehabilitation, University of Ghent, Belgium;6. Department of Mechanical Engineering, KULeuven, Belgium;7. Department of Rehabilitation Sciences, Research Group for Neuromotor, Pediatric and Pelvic Rehabilitation, KULeuven, Belgium;8. Foot and Ankle Institute, Clinique du Parc Léopold, Bruxelles, Belgium;9. Division of Orthopaedics and Traumatology, University Hospitals Leuven, KULeuven, Belgium;10. Department of Development & Regeneration, Biomechanics, Implants and Tissue Engineering, KULeuven, Belgium;11. Multidisciplinary Research Center for Biomedical and Rehabilitation Technology, Mobilab, UC Kempen, Belgium;1. School of Kinesiology, University of Minnesota, United States;2. Graduate Institute of Sport Coaching Science, Chinese Cultural University, Taiwan;3. Office of Institutional Research, Edgewood College, United States;4. College of Well Being, YuanPei University, Taiwan;5. Department of Recreation Sport & Health Promotion, National Pingtung University of Science and Technology, Taiwan;1. Department of Mechanical Engineering, University of Michigan, 3212 G.G.Brown, 2350 Hayward St, Ann Arbor, MI 48109-2125, United States;2. Department of Internal Medicine, Division of Geriatrics, University of Michigan Health System, Ann Arbor, MI 48109, United States;3. Department of Physical Medicine & Rehabilitation, University of Michigan Health System, Ann Arbor, MI 48108, United States;4. Department of Mechanical Engineering, School of Kinesiology, University of Michigan, Ann Arbor, MI 48109, United States |
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| Abstract: | There is evidence that patients with psychotic conditions display greater center of pressure (CoP) displacement during quite standing than healthy subjects, but the underlying impairments in the control mechanisms are uncertain. The aim of this study was to identify the nature of possible impairments in the control of posture by modulation of visual and kinesthetic information during quiet standing. Center of pressure (CoP) data and whole-body kinematics of the center of mass (CoM) were recorded during quite standing on a firm surface with eyes open and with eyes closed, and standing with eyes open on a yielding surface. During all three conditions, patients displayed greater migration of CoM and CoP–CoM, a measure related to ankle joint torque, whereas CoP-frequency (MPF) was similar in patients and healthy subjects. Our results suggested that greater postural sway in patients may depend on disproportionally large ankle joint torque without corresponding increase in frequency. Furthermore, interactions between groups and conditions suggested that the patients made less use of visual information for postural control than the healthy subjects. |
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| Keywords: | Psychiatry Kinetic Kinematic Sensory modulation Sensory integration |
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