Stabilometry is a predictor of gait performance in chronic hemiparetic stroke patients |
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| Authors: | Antonio Nardone Marco Godi Margherita Grasso Simone Guglielmetti Marco Schieppati |
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| Institution: | 1. Fondazione Salvatore Maugeri (IRCCS), Scientific Institute of Veruno (NO), Posture and Movement Laboratory, 28010 Veruno (No), Italy;2. Department of Clinical and Experimental Medicine, University of Eastern Piedmont, 28100 Novara, Italy;3. Fondazione Salvatore Maugeri (IRCCS), Scientific Institute of Pavia, Human Movement Laboratory (CSAM), 27100 Pavia, Italy;4. Department of Experimental Medicine, University of Pavia, 27100 Pavia, Italy;1. Department of Physical Therapy, University of Delaware, Newark, DE 19713, USA;2. Department of Kinesiology & Health Education, University of Texas, Austin, TX 78712, USA;3. Department of Mechanical Engineering, University of Delaware, Newark, DE 19716, USA;1. Department of Physical Therapy, Movement and Rehabilitation Sciences, Northeastern University, Boston, MA 02115, USA;2. Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Chicago, IL 60611, USA;3. Department of Physical Medicine & Rehabilitation, Northwestern University Medical School, Chicago, IL 60611, USA;4. Department of Biomedical Engineering, Marquette University, Milwaukee, WS 53201, USA;1. Department of Kinesiology, University of Waterloo, Waterloo, ON, Canada;2. Mobility Team, Toronto Rehabilitation Institute, Toronto, ON, Canada;3. Faculty of Health Sciences, University of Western Ontario, London, ON, Canada;4. Department of Physical Therapy, University of Toronto, Toronto, ON, Canada;5. Heart and Stroke Foundation Centre for Stroke Recovery, ON, Canada |
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| Abstract: | In patients with spastic hemiparesis, centre of foot pressure (CoP) is shifted toward the unaffected limb during quiet stance. We hypothesised that abnormal gait features would correlate with the degree of asymmetry during stance. In 15 patients and 17 normals we recorded CoP and body sway by a force platform and measured spatial–temporal variables of gait with pedobarography. In patients CoP was shifted toward the unaffected limb and sway was larger than in normals. CoP position was associated with the decrease in strength of the affected lower-limb muscles. Spatio-temporal variables of gait were also affected by the disease. Cadence and velocity were decreased, duration of single support on the unaffected limb and of double support were increased with respect to normals. The degree of impairment of gait variables correlated with CoP. We found a negative relationship between velocity or cadence and CoP, and a positive relationship between duration of single support and CoP in the unaffected but not in the affected limb. Duration of double support correlated positively with CoP. CoP asymmetry during both standing and walking suggests that postural and gait problems share some common neural origin in hemiparetic patients. This asymmetry affects gait performance by increasing the time and effort needed to shift body weight toward the affected limb. The degree of postural asymmetry measured by stabilometry is associated with the level of impairment of gait variables. |
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