Background: Anterior-posterior displacement of center of pressure (AP_CoP) reflects stance limb function. However, AP_CoP's clinical applicability in post-stroke hemiplegia is unclear.
Objective: To investigate the clinical usefulness of parameters from AP_CoP in subacute stage post-stroke hemiplegia, their relationships with usage of gait aid, functional ambulatory category, and spatial-temporal parameters were tested.
Methods: Nineteen participants with post-stroke hemiplegia were included in gait with aid group. Twenty one participants were included in gait with independence group. Twenty one participants were included in control group. Insole foot pressure measurement system was used to measure AP_CoP and spatial-temporal parameters. Effects of gait aid usage and functional ambulatory category on AP_CoP were tested with ANOVA. Relationships between AP_CoP and temporo-spatial parameters were investigated with correlation and linear regression analysis.
Results: AP_CoP parameters were shorter in gait with aid group than gait with independence group. With better functional ambulatory category, AP_CoP were longer. AP_CoP showed positive relationship with walking speed. AP_CoP in more affected side showed positive relationship with symmetry of single support phase proportion. AP_CoP showed positive relationship with stride length.
Conclusions: AP_CoP reflects overall gait function, impairments in more affected side and adaptation in less affected side in subacute recovery stage of post-stroke hemiplegia. It can be used as a clinically significant parameter for gait rehabilitation.
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