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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT04308629
Other study ID # HP-00064894
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date October 1, 2016
Est. completion date October 30, 2017

Study information

Verified date February 2020
Source University of Maryland, Baltimore
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Stroke is the leading cause of disability and diminished quality of living that frequently includes impairments of postural control and upper extremity (UE) function. The interaction of posture and UE coupling in terms of movement planning, initiation, and execution is not well understood. StartReact responses triggered by a loud acoustic stimulus (LAS) during the planning and preparation of goal intended actions has been used to probe the state of brainstem neuronal excitability related to posture and movement sequencing. The purpose of this study is to examine posture and goal-directed movement planning and execution using startReact responses and to evaluate posture and UE movement sequence during reaching while standing in individuals with chronic hemiparesis and healthy controls. Secondly, the investigators will determine the modulatory role of the cortical premotor areas (PMAs) in startReact responses in healthy controls and in persons with stroke by using transcranial direct current stimulation (tDCS) to up- or down-regulate PMAs excitability.


Recruitment information / eligibility

Status Completed
Enrollment 10
Est. completion date October 30, 2017
Est. primary completion date October 30, 2017
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 40 Years and older
Eligibility Inclusion Criteria for stroke:

- Unilateral cortical or white matter subcortical stroke

- Age 40 yrs and older

- = 6 months post ischemic stroke or = 12 months post hemorrhagic stroke

- Residual arm hemiparesis as indicated by Fugl-Meyer Upper Extremity score between 20-65

- Having the ability to perform reaching movements with the paretic arm in standing without an assistive device.

Exclusion Criteria for stroke:

- Stroke involving bilateral hemisphere, brainstem or cerebellum

- Any medical condition precluding participation in testing

- Other health conditions affecting balance and upper extremity movement function beyond the effects of stroke.

Inclusion Criteria for healthy controls:

- Age-matched to the stroke subjects

- Without a history of stroke or any known neurological conditions

- Having the cognitive ability to follow two-step commands and give informed consent

Exclusion Criteria for healthy controls:

- Any medical condition precluding participation in testing

- Other health conditions affecting balance and upper extremity movement function beyond the effects of stroke.

Participants were also excluded if they did not meet the TMS safety criterion including having implantable medical devices, history of seizures, taking medications to reduce anxiety, sedatives, and seizure, and pregnancy.

Study Design


Related Conditions & MeSH terms


Intervention

Other:
Transcranial direct current stimulation


Locations

Country Name City State
n/a

Sponsors (1)

Lead Sponsor Collaborator
University of Maryland, Baltimore

Outcome

Type Measure Description Time frame Safety issue
Primary Change in startReact response The incidence of StartReact response following an loud acoustic stimulus Immediately after the intervention (one session tDCS)
Primary Change in the lag between anticipatory postural adjustments and reach onset The temporal lag between anticipatory postural adjustments (APA) onset and reach onset (unit: seconds) Immediately after the intervention (one session tDCS)
Secondary Change in the reach onset (unit: seconds) The onset of the anterior wrist joint center movement with a threshold of 5% peak velocity Immediately after the intervention (one session tDCS)
Secondary Change in the APA onset (unit: seconds) The onset of the posterior center of pressure displacement with a threshold of 5% peak velocity Immediately after the intervention (one session tDCS)
Secondary Change in the amount of trunk flexion (unit: radians) The angular displacement of the line joining the reaching shoulder and the hip joint center on the same side in the sagittal plane at maximum reach normalized by reach distance Immediately after the intervention(one session tDCS)
Secondary Change in the amount of trunk rotation (unit: radians) The angular displacement of the line connecting both shoulders in the horizontal plane in the direction of the reach at maximum reach normalized by reach distance Immediately after the intervention (one session tDCS)
Secondary Change in the amount of pelvic rotation (unit: radians) The angular displacement of the line connecting both hip joint centers in the horizontal plane in the direction of the reach at maximum reach normalized by reach distance Immediately after the intervention (one session tDCS)
Secondary Change in the amount of trunk-pelvic rotation difference (unit: radians) The difference between trunk and pelvic angular displacement at maximum reach normalized by reach distance Immediately after the intervention (one session tDCS)
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