- ICH GCP
- Rejestr badań klinicznych w USA
- Badanie kliniczne NCT02483676
Ankle Robot to Reduce Foot Drop in Stroke
Adaptive Ankle Robot Control System to Reduce Foot-drop in Chronic Stroke
Przegląd badań
Status
Warunki
Interwencja / Leczenie
Szczegółowy opis
This proposal investigates a novel ankle robot (anklebot) adaptive control approach integrated with treadmill training to reduce foot drop and improve mobility function in chronic hemiparetic stroke survivors. Currently, stroke survivors with foot drop are trained to live with a cane or other assistive device, and often ankle foot orthotics (AFOs) for safety. Neither mediates task-practice or neuromotor recovery.
The investigators have developed an adaptive anklebot controller that detects gait cycle sub-events for precise timing of graded robotics assistance to enable deficit severity-adjusted ankle motor learning in the context of walking. The investigators' pilot findings show that 6 weeks treadmill training with anklebot (TMR) timed to assist swing phase dorsiflexion only is more effective than treadmill alone (TM) to improve free-walking swing dorsiflexion at foot strike, floor-walking speed, and the benefits are retained at 6 weeks post-training. Notably, swing-phase TMR training improved paretic leg push-off, and reduced center-of-pressure sway on standing balance, indicating potential benefits to other elements of gait and balance, beyond those robotically targeted toward foot drop.
This randomized study investigates the hypothesis that 6 weeks TMR is more effective to improve durably gait biomechanics, static, and dynamic balance, and mobility function in chronic stroke survivors with dorsiflexion deficits, compared to TM alone. Aims are to determine the compare effectiveness of 6 weeks TMR vs. TM alone on:
- Independent gait function indexed by gait velocity, swing-phase DF (dorsiflexion), terminal stance push-off.
- Balance function indexed by measures of postural sway (CoP), asymmetric loading in quiet standing, peak paretic A-P forces in non-paretic gait initiation, and standardized scales for balance and fall risk.
- Long-term mobility outcomes, assessed by repeated measures of all key gait and balance outcomes at 6 weeks and 3 months after formal training cessation.
Typ studiów
Zapisy (Rzeczywisty)
Faza
- Nie dotyczy
Kontakty i lokalizacje
Lokalizacje studiów
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Maryland
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Baltimore, Maryland, Stany Zjednoczone, 21201
- Baltimore VA Medical Center VA Maryland Health Care System, Baltimore, MD
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Kryteria uczestnictwa
Kryteria kwalifikacji
Wiek uprawniający do nauki
Akceptuje zdrowych ochotników
Płeć kwalifikująca się do nauki
Opis
Inclusion Criteria:
- Ischemic or hemorrhagic stroke > 2 months prior in men or women
- Residual hemiparesis of the lower extremity that includes symptoms of foot drop
- Capable of ambulating on a treadmill with handrail support
- Already completed all conventional physical therapy
- Adequate language and cognitive function to provide informed consent and participate in testing and training
Exclusion Criteria:
Cardiac history of:
- Unstable angina
- Recent (< 3 months) myocardial infarction
- Congestive heart failure (NYHA category II or higher)
- Hemodynamic valvular dysfunction
- Hypertension that is a contraindication for a bout of treadmill training (>160/100 mmHg on two assessments)
Medical history of:
- Recent hospitalization (< 3 months) for any serious condition leading to significant bed-rest or reduction in mobility function
- Symptomatic peripheral arterial occlusive disease
- Orthopedic or chronic pain conditions restricting exercise
- Pulmonary failure requiring oxygen
- Uncompensated renal failure
- Active cancer
Neurological history and exam consistent with:
- Dementia
- Receptive or global aphasia that confounds testing and training, operationally defined as unable to follow 2-point commands
- Non-stroke neurological disorder restricting exercise (e.g. Parkinson's Syndrome, myopathy)
- Untreated major depression
Plan studiów
Jak projektuje się badanie?
Szczegóły projektu
- Główny cel: Leczenie
- Przydział: Randomizowane
- Model interwencyjny: Przydział równoległy
- Maskowanie: Pojedynczy
Broń i interwencje
Grupa uczestników / Arm |
Interwencja / Leczenie |
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Eksperymentalny: Treadmill+anklebot
This group will receive gait training on a treadmill while wearing the anklebot with the adaptive control system.
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This intervention employs the use of the adaptive anklebot control system to complement treadmill exercise training over a 6-week intervention period.
Inne nazwy:
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Aktywny komparator: Treadmill only
This group will receive gait training on a treadmill, without use of the anklebot.
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This intervention employs the use of a treadmill for gait exercise training over a 6-week intervention period
Inne nazwy:
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Co mierzy badanie?
Podstawowe miary wyniku
Miara wyniku |
Opis środka |
Ramy czasowe |
|---|---|---|
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Gait Velocity During Self-selected Overground Walking
Ramy czasowe: Change from baseline to: Post 6-week training, 6 weeks after completion, and 3 (or 6) months after completion
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Gait velocity during self-selected overground walking measured in cm/sec
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Change from baseline to: Post 6-week training, 6 weeks after completion, and 3 (or 6) months after completion
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Anterior-posterior Propulsion Forces of Paretic Side During Gait
Ramy czasowe: Change from baseline to: Post 6-weeks training, 6 weeks after completion, and 3 (or 6) months
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Newtons: anterior-posterior force generated during push-off phase of the gait cycle
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Change from baseline to: Post 6-weeks training, 6 weeks after completion, and 3 (or 6) months
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Peak Dorsiflexion Angle During Swing Phase of Gait
Ramy czasowe: Change from baseline to: Post 6-week training, 6 weeks after completion, and 3 (or 6) months after completion
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Degrees; extent of ankle dorsiflexion to enable foot clearance
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Change from baseline to: Post 6-week training, 6 weeks after completion, and 3 (or 6) months after completion
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Postural Sway Areas During Quiet Standing
Ramy czasowe: Change from baseline to: Post 6-week training, 6 weeks after completion, and 3 (or 6) months
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cm^2; extent of postural deviations to assess static postural control
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Change from baseline to: Post 6-week training, 6 weeks after completion, and 3 (or 6) months
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Ratio of Asymmetric Loading in Quiet Standing
Ramy czasowe: Change from baseline to: Post 6-week training, 6 weeks after completion, and 3 (or 6) months
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Ratio of Newtons of force per each leg (paretic/nonparetic) while standing quietly
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Change from baseline to: Post 6-week training, 6 weeks after completion, and 3 (or 6) months
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Peak Paretic Push Off Forces During Gait Initiation
Ramy czasowe: Change from baseline to: Post 6-week training, 6 weeks after completion, and 3 (or 6) months
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Newtons; magnitude of forward ground reaction forces
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Change from baseline to: Post 6-week training, 6 weeks after completion, and 3 (or 6) months
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Współpracownicy i badacze
Śledczy
- Główny śledczy: Steven J Kittner, Baltimore VA Medical Center VA Maryland Health Care System, Baltimore, MD
Daty zapisu na studia
Główne daty studiów
Rozpoczęcie studiów (Rzeczywisty)
Zakończenie podstawowe (Rzeczywisty)
Ukończenie studiów (Rzeczywisty)
Daty rejestracji na studia
Pierwszy przesłany
Pierwszy przesłany, który spełnia kryteria kontroli jakości
Pierwszy wysłany (Oszacować)
Aktualizacje rekordów badań
Ostatnia wysłana aktualizacja (Rzeczywisty)
Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości
Ostatnia weryfikacja
Więcej informacji
Terminy związane z tym badaniem
Słowa kluczowe
Dodatkowe istotne warunki MeSH
Inne numery identyfikacyjne badania
- N1699-R
Plan dla danych uczestnika indywidualnego (IPD)
Planujesz udostępniać dane poszczególnych uczestników (IPD)?
Informacje o lekach i urządzeniach, dokumenty badawcze
Bada produkt leczniczy regulowany przez amerykańską FDA
Bada produkt urządzenia regulowany przez amerykańską FDA
produkt wyprodukowany i wyeksportowany z USA
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