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Assessing Special Features of Impaired Gait After Acquired Brain Injury With an Instrumented Treadmill

This study is currently recruiting participants.
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Verified April 2016 by Dr. Manuel Zwecker MD, Sheba Medical Center
Information provided by (Responsible Party):
Dr. Manuel Zwecker MD, Sheba Medical Center Identifier:
First received: July 19, 2011
Last updated: April 28, 2016
Last verified: April 2016

Hemiparetic gait following acquired brain injury (ABI) is grossly characterized by decreased speed of walking, increased stance time on the unaffected side, and decreased stance time on the affected side.These abnormalities are associated with a complex pattern of dysfunction including muscle weakness, spasticity, impaired sensory-motor control, long-term mechanical changes in muscles and joints, and cognitive impairments e.g. attention.\ At this stage of our knowledge it is still unclear which kinetic and kinematic parameters of hemiparetic gait provide insight about the different components of the complex pattern of dysfunction.

A novel technique had been introduced in the Motion Laboratory of the Sheba Medical Center consisting of an ordinary treadmill that is equipped with a 'mat' of more than 5000 high-quality capacitive pressure/force sensors. This treadmill developed by "ZEBRIS" enables to analyze gait and roll-off patterns on the treadmill.

Aims of the study:

  1. To assess variability of data derived from the Zebris treadmill.
  2. To investigate stability of hemiparetic gait.
  3. To evaluate variability and relevant gait parameters taking place during recovery after acute ABI.
  4. To compare gait on ground with gait on treadmill.

Rationale of the study- Basic assumptions of the study:

  1. No significant change in gait parameters is expected in both groups including healthy controls and chronic ABI subjects in recurrent examination within one week period.
  2. Subacute ABI patients are found to be within the context of neurorehabilitative recovery due to brain plasticity. Therefore a change in gait parameters is expected within two consecutive examinations in the chosen time intervals.
  3. All measurements are subject to error which contributes to the variance of outcomes.

On the grounds of these assumptions:

A. Two consecutive examinations in both groups including healthy controls and chronic ABI subjects are intended to estimate the error in measured values.

B. Two consecutive examinations in the subacute ABI patient group are intended to estimate the contribution of neurorehabilitative recovery due to brain plasticity assessed with this unique research instrumentation.

Traumatic and/or Non-traumatic Brain Injury

Study Type: Observational
Study Design: Observational Model: Case Control
Time Perspective: Prospective
Official Title: The Reproducibility and Special Features of Hemiparetic Gait in People With Acquired Brain Injury (ABI) Assessed With an Instrumented Treadmill (Zebris)

Further study details as provided by Dr. Manuel Zwecker MD, Sheba Medical Center:

Primary Outcome Measures:
  • Quality of walking assessed by spatio-temporal gait parameters commonly used in gait laboratories. [ Time Frame: One predetermined gait session should last to 90 minutes. Data collection will be finished one year after the start of the study. Data analysis will be done up to 1 year after Data collection. Summarize of the study 6 months after Data analysis. ]

    Quality of walking: measured by quantifying temporal and spatial parameters, such as [Length of stance phase, Length of swing phase (swing time), Length of double support phase, time of step, Cadence, Step length, Stride].

    These parameters will be calculated from the ground reaction force in function of time.

Estimated Enrollment: 45
Study Start Date: December 2011
Estimated Study Completion Date: December 2017
Estimated Primary Completion Date: May 2017 (Final data collection date for primary outcome measure)
Subacute hemiparetic ABI subjects group
Chronic hemiparetic ABI subjects group

  Show Detailed Description


Ages Eligible for Study:   18 Years to 85 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Subjects will be recruited from inpatient and outpatient clinics at the Sheba Medical Center

Inclusion Criteria:

  • Older than 18y, both healthy and hemiparetic participants.
  • Able to walk continuously for 6 min at their self-selected speed.
  • Normal subjects should be without any clinical history of diseases or injuries in the lower extremities.
  • Able to understand the eligibility requirements for participation in the study.

Exclusion Criteria:

  • Patients with more than one previous clinical stroke or other brain injury.
  • Peripheral artery disease with claudication.
  • Shortness of breath without exertion
  • Resting heart rate outside of the range of 55 to 85 bpm.
  • Resting blood pressure outside of the range of 90/60 to 170/90 mm Hg.
  • Medical and especially cardial conditions preventing walking for more than 10 minutes under normal velocity.
  • No additional major orthopedic or neuromuscular disorders preventing normal walking.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01413321

Contact: Manuel Zwecker, MD **972 3 5303737

Sheba Medical Center Recruiting
Tel Hashomer, Ramat Gan, Israel, 52621
Sponsors and Collaborators
Sheba Medical Center
Principal Investigator: Manuel Zwecker, MD Sheba Medical Center
  More Information

Responsible Party: Dr. Manuel Zwecker MD, Senior physician, Department of Neurological Rehabilitation., Sheba Medical Center Identifier: NCT01413321     History of Changes
Other Study ID Numbers: SHEBA-10-8315-MZ-CTIL
Study First Received: July 19, 2011
Last Updated: April 28, 2016

Keywords provided by Dr. Manuel Zwecker MD, Sheba Medical Center:
Brain Injuries
Post Traumatic Encephalopathy
TBI (Traumatic Brain Injury)
Cerebral Stroke
Vascular Accidents, Brain
Cerebrovascular Apoplexy
Cerebrovascular Accident

Additional relevant MeSH terms:
Wounds and Injuries
Brain Injuries
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Craniocerebral Trauma
Trauma, Nervous System processed this record on September 19, 2017