A dynamical model of locomotion in spastic hemiplegic cerebral palsy: influence of walking speed.

摘要: Abstract Objective . The objective of this study was to assess the capability an escapement-driven inverted pendulum with springs and damping model estimate effects impairments (e.g. spasticity, muscle weakness) on dynamics patterns locomotion children spastic cerebral palsy. Methods Kinematic data six hemiplegic palsy matched, typically developing were collected at five different self-selected overground walking speeds (`very slow' `very fast'). Changes in forcing, stiffness gravitational potentials estimated during stance phase each leg according model's equation motion. Results Significantly greater decreased forcing observed more affected limbs compared peers. term non-affected limb than that matched children. Conclusions support claim disabled individuals losses dynamic resources (stiffness, capability) exploit develop remaining their adapted gait patterns. It suggested clinical interventions aimed normalizing a pattern may be contraindicated, rehabilitation might effective if focused level dynamics. Relevance Pattern formation is seen as optimal solution based individuals' action capabilities properties under environmental task demands. This perspective could lead development address these variables improving functional