A control and a post-stroke subject with right-side chronic hemiparesis were studied. The post-stroke subject underwent 30 sessions of balance-perturbed training while walking on an instrumented treadmill where the Balance Assessment Robot (BAR™) randomly delivered pushes to pelvis in various directions at various speeds and at various perturbation amplitudes. The investigators assessed kinematics, kinetics, electromiography and spatio-temporal responses to outward-directed perturbations commencing either at foot contact of the left or the right leg.
For a detailed description of the study, see the Arms and Interventions section.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
DEVICE_FEASIBILITY
Masking
NONE
Enrollment
2
The BAR™ has got six degrees of freedom (DOF) that interface to the pelvis of a walking subject. Five DOFs (translation of pelvis in sagittal, lateral and vertical directions; pelvic rotation and pelvic list) are actuated and admittance-controlled, providing transparent haptic interaction with negligible power transfer; the remaining DOF (pelvic tilt) is passive. The BAR™ is capable of delivering perturbations in the directions forward/backward and left/right, but for the purpose of this study only "outward" perturbations in the frontal plane were considered.
University Rehabilitation Institute, Republic of Slovenia
Ljubljana, Slovenia
Change in centre of mass of the Case
For the purpose of qualitative assessment of kinematics and kinetics
Time frame: Assessment at session no. 3 (during week 1) and session no. 30 (during week 10)
Change in centre of pressure of the Case
For the purpose of qualitative assessment of kinematics and kinetics
Time frame: Assessment at session no. 3 (during week 1) and session no. 30 (during week 10)
Change in ground reaction force of the Case
For the purpose of qualitative assessment of kinematics and kinetics
Time frame: Assessment at session no. 3 (during week 1) and session no. 30 (during week 10)
Centre of mass of the Control
For the purpose of qualitative assessment of spatio-temporal characteristics of stepping
Time frame: During the only session (i.e., session 1 on day 1)
Centre of pressure of the Control
For the purpose of qualitative assessment of spatio-temporal characteristics of stepping
Time frame: During the only session (i.e., session 1 on day 1)
Ground reaction force of the Control
For the purpose of qualitative assessment of spatio-temporal characteristics of stepping
Time frame: During the only session (i.e., session 1 on day 1)
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.