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Trial registered on ANZCTR
Registration number
ACTRN12619001313123
Ethics application status
Approved
Date submitted
5/09/2019
Date registered
26/09/2019
Date last updated
26/09/2019
Date data sharing statement initially provided
26/09/2019
Type of registration
Prospectively registered
Titles & IDs
Public title
The optimal delivery of a Brain Computer Interface intervention for people with stroke.
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Scientific title
An investigation of the optimal method for delivering a Brain Computer Interface intervention to improve the brain-muscle connection following stroke.
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Secondary ID [1]
299195
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Nil known
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Universal Trial Number (UTN)
U1111-1237-8423
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Stroke
314295
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Condition category
Condition code
Stroke
312644
312644
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0
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Ischaemic
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Stroke
312645
312645
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0
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Haemorrhagic
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Physical Medicine / Rehabilitation
312647
312647
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0
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Physiotherapy
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Each participant will receive three different conditions, two interventions, and one control, on three different days, 7 days apart (in a randomised order). Participants will be blinded to this order.
At the start of each session, electroencephalography (EEG) will be recorded using an EEG cap, while participants perform 50 repetitions of active ankle dorsiflexion of their affected leg, in time with a visual cue. The visual cue is a moving cursor on a computer screen which prompts the participant to prepare and then move their ankle. The EEG is then analysed and the peak negativity of the movement related cortical potential (MRCP) is determined. This timing is then used to inform the timing of one of the interventions.
For the two interventions, the participant will complete 50 repetitions of cued active ankle dorsiflexion of the affected leg. During each repetition of ankle dorsiflexion, a single pulse of electrical stimulation (pulse width 1ms) will be delivered to the deep branch of the common peroneal nerve (via two surface electrodes placed approximately 2-5cm anterior and inferior to the head of the fibula). The intensity of the electrical stimulation will be set to the level required to produce a palpable twitch in the tibialis anterior tendon (device intensity range 0-100mA).
For the first intervention, each pulse of electrical stimulation will be timed to arrive in the motor cortex at the point of peak negativity of the MRCP. This timing is set from the pre-recorded MRCP, and therefore is an 'off-line' version of a Brain Computer Interface (comprised of an EEG recording, a computer analysing the EEG and triggering the stimulator, and an electrical stimulation unit).
For the second intervention, each pulse of electrical stimulation will be timed to arrive in the motor cortex at the time the visual cue is given (to move the affected leg).
The intervention takes approximately 15 minutes, with additional time required for setting up the electrical stimulation. Sessions will be delivered by a trained research assistant. The parameters of intervention delivery and any clinical observations concerning the participants engagement and adherence to the intervention will be recorded on data collections sheets.
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Intervention code [1]
315489
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Rehabilitation
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Intervention code [2]
315490
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Treatment: Other
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Intervention code [3]
315491
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Treatment: Devices
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Comparator / control treatment
The third intervention is the control and is carried out in the same way as the Brain Computer Interface interventions, except that the participant will not receive the electrical stimulation (a light on the electrical stimulation unit will flash on and off but no stimulation will be given). Although the control intervention uses sham electrical stimulation, the participant will still be performing active ankle movements in time with a visual cue. Thus the control is active.
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Control group
Active
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Outcomes
Primary outcome [1]
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Maximal voluntary contraction of the ankle dorsiflexors. Measured with force gauge.
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Assessment method [1]
321295
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Timepoint [1]
321295
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Immediately pre- and immediately post-intervention.
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Secondary outcome [1]
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Corticomuscular coherence of the tibialis anterior muscle. Recorded with simultaneous electroencephalography and electromyography.
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Assessment method [1]
374557
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Timepoint [1]
374557
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Immediately pre- and immediately post-intervention.
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Secondary outcome [2]
374558
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Force steadiness of the ankle dorsiflexors. Measured with force gauge.
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Assessment method [2]
374558
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Timepoint [2]
374558
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Immediately pre- and immediately post-intervention.
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Secondary outcome [3]
374559
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Electromyography of the tibialis anterior during maximal contraction
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Assessment method [3]
374559
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Timepoint [3]
374559
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Immediately pre- and immediately post-intervention.
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Secondary outcome [4]
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Electromyography of the tibialis anterior during submaximal contraction
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Assessment method [4]
374926
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Timepoint [4]
374926
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Immediately pre- and immediately post-intervention.
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Eligibility
Key inclusion criteria
- Single stroke causing hemiparesis and neuromuscular weakness of the ankle dorsiflexor muscles.
- More than 6 months post stroke.
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Minimum age
18
Years
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Maximum age
No limit
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
- Complete paralysis of the ankle
- Being unable to engage in the testing due to significant cognitive, perceptual or communication deficits
- Cerebellar stroke
- Another medical condition that may impact safety of the testing or the reliability of the results.
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Prior to the study a randomisation schedule will be generated to determine the order in which each of the 25 participants will receive the two interventions and control. This will be held by a third party. Following consent, each participant will be allocated a number between 1 and 25, and then the randomisation schedule will determine the order for that participants number.
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Computer generated using www.random.org
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Masking / blinding
Blinded (masking used)
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Who is / are masked / blinded?
The people receiving the treatment/s
The people assessing the outcomes
The people analysing the results/data
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Intervention assignment
Crossover
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Other design features
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Phase
Not Applicable
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Type of endpoint/s
Efficacy
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Statistical methods / analysis
Data from each outcome measure will be analysed using univariate and multivariate linear mixed models.
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Recruitment
Recruitment status
Not yet recruiting
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Date of first participant enrolment
Anticipated
2/12/2019
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Actual
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Date of last participant enrolment
Anticipated
1/06/2020
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Actual
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Date of last data collection
Anticipated
29/06/2020
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Actual
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Sample size
Target
25
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Accrual to date
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Final
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Recruitment outside Australia
Country [1]
21836
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New Zealand
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State/province [1]
21836
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Auckland
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Funding & Sponsors
Funding source category [1]
303735
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University
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Name [1]
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Auckland University of Technology
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Address [1]
303735
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Private Bag 92006
Auckland 1142
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Country [1]
303735
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New Zealand
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Primary sponsor type
University
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Name
Auckland University of Technology
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Address
Private Bag 92006
Auckland 1142
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Country
New Zealand
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Secondary sponsor category [1]
303851
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None
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Name [1]
303851
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Address [1]
303851
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Country [1]
303851
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Other collaborator category [1]
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Other
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Name [1]
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New Zealand College of Chiropractic
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Address [1]
280941
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6 Harrison Road
Mt Wellington
Auckland 1060
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Country [1]
280941
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New Zealand
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
304259
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Health and Disability Ethics Committees (HDEC)
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Ethics committee address [1]
304259
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Ministry of Health
Health and Disability Ethics Committees
PO Box 5013
Wellington 6140
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Ethics committee country [1]
304259
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New Zealand
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Date submitted for ethics approval [1]
304259
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19/08/2019
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Approval date [1]
304259
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02/09/2019
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Ethics approval number [1]
304259
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19/CEN/149
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Summary
Brief summary
This study will investigate the optimal method for delivering a Brain Computer Interface intervention to improve brain activity and the ability to move the affected leg, in people with chronic stroke (>6 months). The aim of this research is to investigate the immediate effects of three different interventions: 1) Brain Computer Interface Intervention using the persons brain activity to time the intervention, 2) Brain Computer Interface Intervention using a visual cue to time the intervention, and 3) Control intervention. The study will use a repeated measures cross-over design, where each participant will receive each of the three interventions on three different days, 7 days apart, in a randomised order. Participants will undergo a number of tests before and after each intervention, to determine the effects of each intervention on brain and muscle activity.
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Trial website
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
96318
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Mrs Sharon Olsen
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Address
96318
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Health and Rehabilitation Research Institute
School of Clinical Sciences
Faculty of Health and Environmental Sciences
Auckland University of Technology
Private Bag 92006
Auckland 1142
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Country
96318
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New Zealand
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Phone
96318
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+64 9 921 9999
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Fax
96318
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Email
96318
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[email protected]
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Contact person for public queries
Name
96319
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Mrs Sharon Olsen
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Address
96319
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Health and Rehabilitation Research Institute
School of Clinical Sciences
Faculty of Health and Environmental Sciences
Auckland University of Technology
Private Bag 92006
Auckland 1142
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Country
96319
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New Zealand
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Phone
96319
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+64 9 921 9999
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Fax
96319
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Email
96319
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[email protected]
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Contact person for scientific queries
Name
96320
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Mrs Sharon Olsen
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Address
96320
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Health and Rehabilitation Research Institute
School of Clinical Sciences
Faculty of Health and Environmental Sciences
Auckland University of Technology
Private Bag 92006
Auckland 1142
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Country
96320
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New Zealand
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Phone
96320
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+64 9 921 9999
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Fax
96320
0
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Email
96320
0
[email protected]
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Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
No
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No/undecided IPD sharing reason/comment
Not included in ethical approval
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What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
No additional documents have been identified.
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