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Hemiplegic gait: a kinematic analysis using walking speed as a basis.
1Department of Physical Therapy, Free University Hospital, Amsterdam, The Netherlands.
Journal of Biomechanics
|September 1, 1992
Summary
Treadmill walking analysis reveals that walking speed is key for evaluating stroke patient gait. Gait coordination in stroke survivors and healthy individuals shows similarities, allowing for quantification of deficits.
Area of Science:
- Biomechanics
- Neurology
- Gait Analysis
Background:
- Stroke survivors often exhibit altered gait kinematics.
- Understanding trunk rotation during ambulation is crucial for gait rehabilitation.
Purpose of the Study:
- To investigate the relationship between walking speed and trunk kinematics in stroke patients and healthy subjects.
- To quantify gait deficits in stroke patients using dimensionless parameters.
Main Methods:
- Kinematic analysis of treadmill walking in 9 stroke patients and 4 healthy subjects across various speeds (0.25-1.5 m/s).
- Focus on transverse trunk rotations, including pelvic and thoracic movements.
- Dimensional analysis to compare gait coordination between groups.
Main Results:
- Similar relationships between walking speed, stride length, and stride frequency were observed in both groups.
- Trunk rotation (phase difference and range) linearly correlated with walking speed.
- Dimensionless analysis revealed invariances in gait coordination and identified transitions in pelvic and trunk rotation at 0.75-1 m/s.
Conclusions:
- Walking speed is a critical control parameter for evaluating stroke patient gait.
- Dimensionless gait parameters can effectively quantify motor deficits in stroke survivors.
- Gait coordination, particularly trunk rotation, becomes more tightly coupled with increased walking speed.