Stroke
Conditions
Brief summary
The main objective of this study is to quantitatively assess the robotic assistance given by an exoskeleton on patients gait parameters. Patients will be asked to walk with- and without the exoskeleton on a treadmill. During the study, the biomechanical and the energy consumption will be assessed.
Interventions
DEVICEExoskeleton for gait rehabilitation (Atalante)
Subjects will walk with different levels of assistance given by the robot.
Sponsors
Cliniques universitaires Saint-Luc- Université Catholique de Louvain
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* Hemiparesis due to stroke * Min 18 years * Time since stroke \> 15 days * Ability to understand instructions * Ability to do gait analysis on the treadmill
Exclusion criteria
\- Contraindication for the use of the robot Atalante
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Energy cost (J.kg/m) | 1 week | A nasal mask is fitted to the subject to measure oxygen consumption (VO2) and carbon dioxide production (VCO2). The ratio between VCO2 and VO2 is used to calculate the respiratory exchange ratio (RER). The Joules of energy expended per liter of oxygen consumed were computed depending on the RER. RER is assessed in a standing and walking condition. Finally, the energy cost is obtained by the ratio walking expended minus standing'' divided by speed. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Temporo-spatial parameters of gait: stance phase | 1 week | Reflective landmarks positioned on precise anatomic sites were used to compute spatiotemporal variables. 8 infra-red camera are used to assess stance phase (%). |
| Temporo-spatial parameters of gait: cadence | 1 week | Reflective landmarks positioned on precise anatomic sites were used to compute spatiotemporal variables. 8 infra-red camera are used to assess cadence (step/min). |
| Temporo-spatial parameters of gait: step length | 1 week | Reflective landmarks positioned on precise anatomic sites were used to compute spatiotemporal variables. 8 infra-red camera are used to asess step length (m). |
| Muscle activation | 1 week | Electrodes are placed on different muscles to record muscles activity. |
| Mechanical work (J.kg/m) | 1 week | The total positive mechanical work performed by the muscles during gait is calculated by the sum of external work (performed to move the body center of mass) and internal work (performed to move the body segments relative to the body center of mass) |
| Segmental kinematics of gait (°) | 1 week | Reflective landmarks positioned on precise anatomic sites were used to compute kinematic variables. Data from landmarks are collected with 8 infra-red camera. From Euler angles, it allowed the computation of angular displacements of the pelvis, hip, knee and ankle in the three planes of space. |
Countries
Belgium
Outcome results
None listed