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Clinical Trial Summary

This study attempts to minimize the development of a common movement impairment following stroke known as "flexion synergy" that makes it extremely difficult to reach outward with the arm. Participants with acute/subacute stroke will receive one of two study interventions in addition to prescribed therapies in both inpatient rehabilitation and day-rehab. Participants will be followed for 1 year.


Clinical Trial Description

Eighty-six individuals with acute (admission to in-patient rehabilitation) severe hemiparetic stroke (Chedoke McMaster Stroke Assessment arm score of Stage 2 or 3 out of 7) will participate in this study. All participants will be recruited upon admission to the Shirley Ryan AbilityLab (formally Rehabilitation Institute of Chicago) for stroke rehabilitation under the administration of the study physician. Participants will receive experimental or comparison group therapy as adjuvant to regular in-patient and day-rehabilitation therapy. Participants will be evaluated weekly while in therapy and then bimonthly (every other month) after discharge until 1-year following baseline evaluation. From the admission evaluations by the study physician and other rehabilitation services, patients with adequate language, visuospatial, cognitive and motor function will be consented for participation and then screened by a study evaluation physical therapist and board-certified neurological clinical specialist for the specific motor inclusion criteria. After consent, a REDCap screening form will be initiated by the study physician's project coordinator with relevant data from the participant medical record. The study evaluation therapist will then conduct the screening that will include verification and completion of the inclusion/exclusion criteria and the transcranial magnetic stimulation (TMS) safety checklist that will identify any contraindication to TMS-based assessment of motor evoked potentials (MEPs). The Chedoke McMaster Stroke Assessment (primary motor inclusion criteria) is very time efficient reducing interference with in-patient therapy activities and rapidly identifying individuals with severe impairment facilitating participant recruitment. The study evaluation therapist will not need to complete the entire assessment instead only confirming patients at level 2 and 3 out of 7 for inclusion. The REDCap screening form and TMS checklist will be reviewed by the study physician. The study physician will grant medical clearance for TMS-based MEP assessment and participation in the study. Regarding motor criteria; participants not meeting the minimum of Stage 2 out of 7 on the Chedoke McMaster Stroke Assessment will be monitored for emergence of adequate movement. Shirley Ryan AbilityLab therapists routinely report Chedoke scores in daily documentation. The study physician and project coordinator will notify the study evaluation therapist once minimal movement emerges in these patients and the screening process can be initiated. Participants who subsequently pass screening and medical clearance for TMS-based MEP assessment will undergo conventional MEP assessment. Participants will later be randomly allocated to either the experimental or comparison treatment groups within REDCap by the study intervention therapist upon the first intervention session. The REDCap randomization algorithm is managed by the study biostatistics team and employs a concealed allocation table. The allocation table is constructed to balance the allocation of participants (2 groups of n=43) by sex, presence or absence of MEPs, and level of severity as measured by the Fugl-Meyer Arm Motor Assessment in order to ensure equivalent baseline characteristics of each group. The Fugl-Meyer score will be divided in bins of 6 points. Participants, evaluation therapists, biostatisticians, and the study PD/PI will be blinded to group assignment. Intervention therapists and the study physician will not be blinded to group assignment. Participants will not be able to tell the difference between interventions since both will involve reaching practice. Participants that are not medically cleared for TMS-based MEP assessment will be randomly allocated to group without MEP status. It is anticipated that only 1-2% of participants will not be cleared for MEP assessment. Baseline and subsequent evaluations will include a kinematic/kinetic measurement of reaching function (primary endpoint, reaching distance under standardized abduction loading, normal gravity) and a kinematic/kinetic measurement of shoulder/elbow impairment (secondary endpoint, loss of independent joint control). The primary and secondary endpoints will be conducted at Shirley Ryan AbilityLab during both in-patient and day-rehabilitation by the study evaluation therapist under following initial training and certification by the study PD/PI. Standardized clinical evaluations of arm impairment, activity limitation, and participation restriction will also be performed during this phase at Shirley Ryan AbilityLab by the study evaluation therapist who will be blinded to intervention group. Evaluations will take place at baseline, weekly until discharge from rehabilitation, and then bimonthly until 12 months post-baseline measurement. Following discharge from rehabilitation, patients will receive follow-up evaluations bimonthly at Northwestern University Department of Physical Therapy and Human Movement Sciences. These evaluations will be conducted by a second study evaluation therapist and board-certified neurological clinical specialist following initial training and certification by the study PD/PI. The second study evaluation therapist will also serve as the backup for the first study evaluation therapist in case of illness/absence. During in-patient rehabilitation and day-rehabilitation, experimental and comparison intervention sessions will parallel regular therapy and be conducted at Shirley Ryan AbilityLab and Streeterville Day Rehabilitation Center respectively by two Shirley Ryan AbilityLab study intervention therapists. Study intervention therapists will be initially trained and certified by the study PD/PI. Study intervention sessions will be 5 days per week during in-patient therapy and 3 days per week during day-rehabilitation. The intervention period for both groups will be ~45 minutes (truncated at 1 hour) in addition to the regular therapy schedule until discharge. Both interventions will involve performing standardized reaching exercises to outward targets displayed on a monitor. The experimental group receiving progressive abduction loading therapy will practice reaching exercises with abduction loading and the comparison group will practice reaching supported on a horizontal haptic table. All participants will have the same maximum number of sets and repetitions of exercise during sessions and the sessions will be truncated at 60 minutes of total contact time. Half of the enrolled participants are expected to transition to day-rehabilitation following in-patient rehabilitation. In day-rehabilitation, participants will continue to receive the same study intervention but only 3 days per week matching the day-rehabilitation schedule. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT04118998
Study type Interventional
Source Northwestern University
Contact Michael D Ellis, PT, DPT
Phone 3125034435
Email m-ellis@northwestern.edu
Status Recruiting
Phase N/A
Start date August 27, 2021
Completion date August 31, 2025

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